In this study,an active packaging film was developed using polyvinyl alcohol(PVA)incorporated with Bajakah Tampala(BT)extract,which acts as an antimicrobial agent and UV-protective additive.The solution casting method...In this study,an active packaging film was developed using polyvinyl alcohol(PVA)incorporated with Bajakah Tampala(BT)extract,which acts as an antimicrobial agent and UV-protective additive.The solution casting method was employed,with BT extract concentrations ranging from 0.5 to 2 wt%.The BT extract exhibited strong antimicrobial properties and significant UV-protection,with a total phenolic content and IC_(50) values of 242.88±0.34 mg GAE/g and 7.83±0.03μg/mL,respectively.Incorporating 2 wt%BT extract into the PVA matrix resulted in substantial UV-light protection and enhanced tensile strength by 55.1%,tensile modulus by 167.2%,elongation at break by 53.1%,toughness by 84.3%,and crystallinity index by 21.8%.Additionally,the composite film retained moderate antimicrobial and antioxidant activity.These findings demonstrate PVAbased active packaging enriched with BT extract offers promising properties for food packaging applications,including enhanced mechanical strength,UV resistance,barrier performance,and antimicrobial protection.展开更多
This study proposes the development of nanocomposite films based on poly(butylene adipate-co-terephthalate)(PBAT)incorporated with different concentrations of molybdenum trioxide(MoO3)for use in biodegradable packagin...This study proposes the development of nanocomposite films based on poly(butylene adipate-co-terephthalate)(PBAT)incorporated with different concentrations of molybdenum trioxide(MoO3)for use in biodegradable packaging.The films were produced by extrusion followed by calendering and characterized using Fourier-transform infrared spectroscopy(FTIR),time-domain nuclear magnetic resonance(TD-NMR),water activity(aW)analysis,and contact angle measurements.FTIR results indicated physical interactions between the polymer matrix and the nanoparticles,particularly in the carbonyl group region.TD-NMR analysis revealed restricted molecular mobility of the PBAT chains in samples with lower MoO3 content,suggesting good nanoparticle dispersion.Water activity decreased with increasing MoO3 concentration,indicating improved barrier properties.Contact angle measurements showed that the formulation with 0.1%MoO3 exhibited greater hydrophilicity,due to the generation of more heterogeneous materials,which is in agreement with the TD-NMR measurements.The results suggest that controlled incorporation of MoO3 can enhance the structural and functional properties of PBAT,reinforcing its potential as a material for active and sustainable packaging.展开更多
Edible film combined with nanotechnology is one of the strategies of food intelligent packaging to extend food shelf life.Herein,eugenol-loaded sodium caseinate and trimethyl chitosan composite nanoparticles(ESTNPs)we...Edible film combined with nanotechnology is one of the strategies of food intelligent packaging to extend food shelf life.Herein,eugenol-loaded sodium caseinate and trimethyl chitosan composite nanoparticles(ESTNPs)were firstly prepared to improve bioavailability and stability.Subsequently,gelatin films loaded with ESTNPs were fabricated,and microscopic results showed good biocompatibility between nanoparticles and gelatin.The incorporation of ESTNPs significantly improved the light/water/oxygen barrier properties and thermal stability of the film(p<0.05),while it weakened the mechanical performance.ESTNPs endowed the film with excellent antibacterial efficiency(exceeded 99.99%)and enhanced its antioxidant activity.The ESTNPs/gelatin composite film exhibited good storage stability.The release behavior of eugenol from the film indicated that the composite film was more suitable for acidic foods,which could be used for meat packaging.Results in the antibacterial and preservation tests on chicken breast meat confirmed that the composite film could indeed serve as an active food packaging film for extending the shelf life of the meat without side-effect on the chroma,texture and sense quality.Hence,the prepared edible film combined with ESTNPs has great potential in extending food shelf life and provide a strategy for the preparation of active packaging.展开更多
Active packaging based on biomaterials and essential oils is an alternate for plastic ones.But,essential oils are chemically and physiologically labile,and they have strong scents,limiting their use as antimicrobial a...Active packaging based on biomaterials and essential oils is an alternate for plastic ones.But,essential oils are chemically and physiologically labile,and they have strong scents,limiting their use as antimicrobial additives in food.Thus,in this investigation,basil oil was encapsulated in silica nanoparticles(basil oil@SiNPs)and combined with chitosan films(basil oil@SiNPs@chitosan).Scanning electron microscopy(SEM),Transmission electron microscopy(TEM),X-ray diffraction(XRD),surface area and Brunauer-Emmett-Teller(BET)analysis,encapsulation and loading%were used to evaluate basil oil@SiNPs.The surface area of SiNPs decreased from 59.006 to 43.86 cm^(2)/g due to basil oil encapsulation.The encapsulation and loading%were 81.96,65.87,48.48 and 43.13,37.64,33.44%for 2,1.5,and 1 mL of basil oil,respectively.Fourier-transform infrared(FT-IR),XRD,thermogravimetric analysis(TG),mechanical,wettability,water vapor permeability(WVP),oxygen permeability(OP)features;water vapor sorption isotherms and antimicrobial inhibition tests were used to describe the produced basil oil@SiNPs@chitosan films.Water contact angles and activation energy increased from 89.0◦to 110.9◦and-11.97 to-20.40 kJ/mol,respectively after addition of basil oil@SiNPs.However,WVP decreased from 5.9580×10^(-1)±0.33 to 4.2413×10^(-1)±0.55 g.mm.m^(-2).h^(-1).kPa^(-1)and OP increased from 4.094×10^(-4)±0.52 to 6.715×10^(-5)±0.32(g.m^(-2).day^(-1).atm^(-1)).The four models Guggenheim-Anderson-de Boer(GAB),Smith,Henderson and SIPSI were suitable for describing the moisture sorption of basil oil@SiNPs@chitosan films.Basil oil@SiNPs has antimicrobial inhibition against Gram positive and negative bacteria,pathogenic yeast.展开更多
To explore the dihydromyricetin or eugenol loaded nanofiber’s potential as food active packaging,0%,0.1%,0.5%,and 1.0%dihydromyricetin or eugenol loaded nanofibers were fabricated by electro-blowing spinning,which in...To explore the dihydromyricetin or eugenol loaded nanofiber’s potential as food active packaging,0%,0.1%,0.5%,and 1.0%dihydromyricetin or eugenol loaded nanofibers were fabricated by electro-blowing spinning,which increased the yield of nanofibers by a factor of 10 times compared to that of traditional electrospinning.The morphology observation by scanning electron microscopy showed similar morphology and diameter distribution of the dihydromyricetin or eugenol nanofibers.Fourier transform infrared spectra analysis indicated that eugenol or dihydromyricetin interacted with proteins through hydrogen bonding.X-ray diffraction profiles of the nanofibers indicated that dihydromyricetin was uniformly distributed within the nanofibers.Nanofibers encapsulated with various concentrations of eugenol or dihydromyricetin showed better barrier properties against water vapors than the free nanofibers,which indicated that the hydrophobic eugenol and dihydromyricetin inhibited the permeation of water molecules through the nanofibers.Tensile tests showed that the nanofibers loaded with 0.5%eugenol or 1.0%dihydromyricetin exhibited relatively higher elastic moduli and lower elongation at break.The nanofibers loaded with dihydromyricetin showed comparable antioxidant activity to that with eugenol in the aspect of ferric and cupper reducing activity,while that with 0.1%-1.0%dihydromyricetin showed superior DPPH radical scavenging activity.Furthermore,both eugenol and dihydromyricetin loaded gelatin/zein nanofibers showed effective antimicrobial activities against Escherichia coli and Staphylococcus aureus.Overall,the dihydromyricetin loaded gelatin/zein nanofibers showed comparable physical and functional properties compared to eugenol,which suggests the application of dihydromyricetin nanofibrous films on food active packaging and the potential application of dihydromyricetin on functional food delivery systems.展开更多
Silver nanoparticles(AgNPs)were manufactured using the green method mediated by enoki mushroom water extract,and starch/agar functional films were fabricated.The developed AgNPs were small(~10 nm)and spherical and sho...Silver nanoparticles(AgNPs)were manufactured using the green method mediated by enoki mushroom water extract,and starch/agar functional films were fabricated.The developed AgNPs were small(~10 nm)and spherical and showed strong antibacterial activity towards foodborne pathogenic bacteria,L.monocytogenes,and E.coli.AgNPs were unvaryingly dispersed in the starch/agar matrix,and the inclusion of AgNPs pointedly enhanced the water vapor barrier and hydrophobicity of the starch/agar-based films.However,adding AgNPs did not affect the films’mechanical strength and thermal stability.Also,the AgNPs-added starch/agar film displayed potent antibacterial activity towards E.coli and L.monocytogenes.Starch/agar films with better physical(mechanical strength,water vapor barrier)and functional properties(antibacterial activity)are expected to be applied in active food packaging.展开更多
The current study involves the fabrication of polysaccharide-based films containing Chitosan(CS)-Pullulan(PL)and Taro starch(TS),all derived from conventional sources.The extraction of starch from Taro(Colocasia escul...The current study involves the fabrication of polysaccharide-based films containing Chitosan(CS)-Pullulan(PL)and Taro starch(TS),all derived from conventional sources.The extraction of starch from Taro(Colocasia esculenta)tubers was carried out by employing the wet-milling process in the laboratory.The main study was aimed at studying the influence of added TS into the CS-PL matrix through various characterization techniques such as mechanical,structural,spectroscopic,thermal,morphological and biological studies.The added TS was found to enhance the tensile strength as well as the crystallinity of the chitosan/pullulan(CP)blend films.The blend films showed a decline in the opacity values with the addition of TS.The effective interaction between the blended components indicated stronger intermolecular hydrogen bonding between them which was confirmed through FTIR and DSC studies.The thermal analysis depicted that the TS incorporated blend films degraded at a slightly higher temperature than the control film.The developed films were found to be hydrophobic in nature,with increasing hydrophobicity with increase in concentration of TS.The fabricated films were found to be biologically active i.e.,antimicrobial and antioxidant,which is due to the presence of certain active compounds present in the taro tubers.These outcomes suggest that these films can be harnessed as active packaging materials in the food industry.展开更多
The synergistic effect of organoclay(OC)and zinc oxide(ZnO)nanoparticles on the crucial properties of poly(lactic acid)(PLA)nanocompositefilms was systematically investigated herein.After their incorporation into PLA v...The synergistic effect of organoclay(OC)and zinc oxide(ZnO)nanoparticles on the crucial properties of poly(lactic acid)(PLA)nanocompositefilms was systematically investigated herein.After their incorporation into PLA via the solvent casting technique,the water vapor barrier property of the PLA/OC/ZnOfilm improved by a maximum of 86%compared to the neat PLAfilm without the deterioration of Young’s modulus or the tensile strength.Moreover,thefilm’s self-antibacterial activity against foodborne pathogens,including gram-negative(Escherichia coli,E.coli)and gram-positive(Staphylococcus aureus,S.aureus)bacteria,was enhanced by a max-imum of approximately 98–99%compared to the neat PLAfilm.Furthermore,SEM images revealed the homo-geneous dispersion of both nano-fillers in the PLA matrix.However,the thermal stability of thefilm decreased slightly after the addition of the OC and ZnO.Thefilm exhibited notable light barrier properties in the UV-Vis range.Moreover,the incorporation of a suitable biodegradable plasticizer significantly decreased the Tg and notably enhanced theflexibility of the nanocompositefilm by increasing the elongation at break approxi-mately 1.5-fold compared to that of the neat PLAfilm.This contributes to its feasibility as an active food packa-ging material.展开更多
The authors regret that an incorrect FE-SEM image was inadvertently inserted in Fig.6 of the published article.Specifically,the surface FE-SEM image corresponding to the Active 1%sample was mistakenly replaced with th...The authors regret that an incorrect FE-SEM image was inadvertently inserted in Fig.6 of the published article.Specifically,the surface FE-SEM image corresponding to the Active 1%sample was mistakenly replaced with the wrong cropped image during figure preparation.展开更多
There is a growing interest in bioplastic-based degradable and sustainable packaging film and in this regard,poly(butylene adipate-co-terephthalate)(PBAT)can be a good choice owing to similar flexibility to commonly u...There is a growing interest in bioplastic-based degradable and sustainable packaging film and in this regard,poly(butylene adipate-co-terephthalate)(PBAT)can be a good choice owing to similar flexibility to commonly used traditional plastic.Even though poly butylene adipate-co-terephthalate is promising as an alternative,it lacks many desirable properties such as working as a barrier,mechanical strength,transparency,and functionality for active food packaging systems.Therefore,adding functional fillers can be helpful to achieve this goal.The nanoceria and metakaolin are known as active ingredients,and adding these fillers in PBAT film is expected to enhance the physical and functional properties.The functional packaging film made with PBAT was produced by mixing the solution and casting it.The addition of fillers nanoceria(CeO_(2)NPs)and metakaolin(MK)has improved the film’s mechanical characteristics,hydrophobicity,and barrier qualities significantly.Moreover,the antimicrobial resistance properties towards Gram-negative and positive bacterial strains also increased point-edly.Therefore,the PBAT packages for food can greatly benefit from the use of functional packaging film.展开更多
Development of novel packaging is one of the research hotspots in food industry. In this study, a biodegradablefilm substrate was constructed with sodium alginate (SA) and gelatin (GEL), rose polyphenol extract (RPE) ...Development of novel packaging is one of the research hotspots in food industry. In this study, a biodegradablefilm substrate was constructed with sodium alginate (SA) and gelatin (GEL), rose polyphenol extract (RPE) wasinvolved in which to prepare active packaging film, and its application in edible oil packaging was evaluated. Asthe volume ratio of SA to GEL was 7:3 (SA7-GEL3), an optimal tensile strength and elongation at break of the filmwere obtained, which were 51.47 MPa and 27.05%, respectively. When incorporating RPE into the film, itsmechanical properties reduced while opacity and antioxidative activity increased significantly as compared tothe SA7-GEL3 films. The release of RPE in 50%, 95% ethanol solution were lower than that in water after 240 h,indicated its feasibility for packaging high-fat food. As applied the 0.3RPE film in packaging edible oils, itsapplication form in bag packaging had significantly higher antioxidative properties than top-covering. Comparedto plastic ziplock bag packaging, the shelf life of sunflower oil and lard packaged in 0.3RPE film bags extended by110 days and 71 days, respectively. This work suggested a promising alternative food packaging material withbiodegradable substrate and RPE. It could provide a new idea for packaging edible oils that rich in unsaturatedfatty acids and novel strategy of using by-products of edible rose processing.展开更多
Recently,food grade nanofiber-based materials have received growing attentions in food packaging.In this work,novel active and intelligent packaging nanofibers based on gelatin/chitosan with curcumin(GA/CS/CUR)were de...Recently,food grade nanofiber-based materials have received growing attentions in food packaging.In this work,novel active and intelligent packaging nanofibers based on gelatin/chitosan with curcumin(GA/CS/CUR)were developed via electrospinning technique.Effects of the incorporation of CUR content(0.1%-0.3%,m/m)on the microstructure and functional properties of the electrospun nanofibers were investigated.Morphological studies using scanning electron microscopy indicated that loading CUR can affect the average diameter of nanofiber mats,which remained around 160-180 nm.The addition of an appropriate level CUR(0.2%,m/m)led to a stronger intermolecular interaction,and thus enhanced the thermal stability and tensile strength of the obtained nanofibers.Meanwhile,the incorporation of CUR significantly improved antioxidant activity and the antimicrobial activity of GA/CS/CUR nanofibers.Moreover,the sensitivity of nanofibers to ammonia results indicated that GA/CS nanofibers containing 0.2%CUR(GA/CS/CURⅡ)presented high sensitivity of colorimetric behavior to ammonia(within 3 min).These results suggest GA/CS/CURⅡnanofibers has great potential as a multifunctional packaging to protect and monitor the freshness of proteinrich animal foods,such as meat and seafood.展开更多
The quality assurance of muscle foods poses a significant challenge,as they serve as crucial dietary sources for human health.Currently,there is a growing interest in utilizing phytochemicals as a natural solution for...The quality assurance of muscle foods poses a significant challenge,as they serve as crucial dietary sources for human health.Currently,there is a growing interest in utilizing phytochemicals as a natural solution for preserving muscle foods due to their advantageous bioactive properties and safety profile.The encapsulation of phytochemicals through controlled release technology holds promise in improving the stability,bioavailability,and sustained antimicrobial and antioxidant effects of these compounds in muscle food preservation.Optimizing the physicochemical properties and biological activities of phytochemicals improves their applicability and expands their functionalities when applied to the preservation of muscle foods.This study underscores the impact of microbial degradation,lipid-protein oxidation,and the generation of heterocyclic aromatic amines(HAAs)as critical factors influencing the quality and safety of muscle food preservation.More importantly,various controlled release systems that employ phytochemicals as active preparations in muscle food preservation are summarized.They can be divided into three main categories:micro-nanoencapsulation,active edible packaging,and their combinations.展开更多
Herein,chitosan/pullulan(CS/PL)active films incorporated with quinic acid(QA)and montmorillonite(MMT)were fabricated,and their potential for tofu slice preservation was evaluated.The FTIR analysis confirmed the enhanc...Herein,chitosan/pullulan(CS/PL)active films incorporated with quinic acid(QA)and montmorillonite(MMT)were fabricated,and their potential for tofu slice preservation was evaluated.The FTIR analysis confirmed the enhanced intermolecular interactions between the components of the film matrix.SEM micrographs displayed compact and homogeneous surfaces,ensuring the compatibility of MMT and QA within the CS/PL matrix.These enhancements contributed to a significant improvement in the physicochemical properties of active films.The incorporation of MMT improved the water barrier properties of the film,while QA instilled antimicrobial qualities.Thus,MMT and QA incorporated CS/PL active film presented superior mechanical(tensile strength of~68.51 MPa),UV shielding,water vapor barrier(3.51×10^(-10) gm^(-1)S^(-1)Pa^(-1)),and oxygen barrier features compared to control CS/PL film.It also performed superior antimicrobial and antioxidant functionality,strengthening tofu slice preservation.During preservation,changes in the visual appearance and biochemical constituents of tofu slices have been analyzed.Compared to the unwrapped tofu slice,the tofu slice wrapped in MMT and QA incorporated CS/PL active film displayed greater visual acceptance and retained its biochemical constituents and antioxidant ability.Moreover,the CS/PL active film containing MMT and QA safeguarded the tofu slice more effectively with minimal weight loss(~16.67%)and bacterial count(6.46 log CFU/g)over 72 h of storage at RT than the control CS/PL film.Hence,the fabricated CS/PL active films integrated with MMT and QA can be employed as a functional packaging material for tofu slice preservation.展开更多
Cellulose nanocrystals(CNC)-reinforced biopolymers have emerged as a widely embraced approach for enhancing the characteristics of biopolymers due to their exceptional properties.Biocomposite(Chl-CNC)films were fabric...Cellulose nanocrystals(CNC)-reinforced biopolymers have emerged as a widely embraced approach for enhancing the characteristics of biopolymers due to their exceptional properties.Biocomposite(Chl-CNC)films were fabricated by blending Chlorella biomass and varying concentrations of CNCs via a solution casting technique.CNCs were effectively isolated from hemp stalk fibers,as confirmed by structural,surface,thermal,and morphological analysis.The crystallinity of films increased by CNC incorporation,which was confirmed by the XRD.The presence of molecular interactions between CNC and protein-rich Chlorella biomass was illustrated with the FTIR analysis.These interactions enhanced the physicochemical properties of the films.Further,films demonstrated a high level of soil biodegradation in the 42 days,while their total phenolic,chlorophyll,carotenoid contents,and antibacterial activity were unaffected by the incorporation of CNCs.The Chl-CNC films,regardless of CNC addition,indicated antimicrobial activity toward Escherichia coli but not Staphylococcus aureus.These results indicate that developed biobased and biodegradable Chl-CNC films could be highly beneficial in active food packaging applications.展开更多
Reducing agricultural by-products and upcycling them into high-value-added functional materials is a crucial strategy for achieving environmental sustainability in the food industry.Therefore,this study aims to engine...Reducing agricultural by-products and upcycling them into high-value-added functional materials is a crucial strategy for achieving environmental sustainability in the food industry.Therefore,this study aims to engineer a sustainable,high-performance antioxidant packaging film based on a PHBH/PBAT blend reinforced with upcycled walnut shell-derived carbon dots(wCDs)via a scalable extrusion.We hypothesized that wCDs could serve as multifunctional nanofillers,enhancing the physicochemical barrier and antioxidant properties of the PHBH/PBAT matrix.wCDs were synthesized from walnut shell waste through a green hydrothermal method and exhibited zero-dimensional morphology with excellent radical-scavenging activity.wCDs were then incorporated into the PHBH/PBAT matrix using twin-screw extrusion,serving as multifunctional nanofillers.The resulting nanocomposites exhibited excellent UV-blocking capabilities,reducing UV transmittance to near-zero levels,and improved oxygen-barrier properties,increasing the oxygen-barrier property by approximately 21%relative to the neat blend.Furthermore,the wCDs imparted strong antioxidant activity to the films,with the 3.0 wt%loaded film scavenging 96.5%of ABTS radicals.The practical efficacy was confirmed through food application tests using extra-virgin olive oil,in which the nanocomposite pouches significantly suppressed lipid peroxidation during storage.These findings demonstrate that integrating biowaste-derived wCDs into biodegradable polymers via scalable extrusion offers a promising,eco-friendly strategy for oil packaging that extends the oxidative shelf life of oily food products.展开更多
In the present study,different doses of lyophilized kiwifruit peel powder extract(KPE)were incorporated into carboxymethyl cellulose(CMC)and gum Arabic(GA)based polymer matrices to fabricate films CG-CT(control film),...In the present study,different doses of lyophilized kiwifruit peel powder extract(KPE)were incorporated into carboxymethyl cellulose(CMC)and gum Arabic(GA)based polymer matrices to fabricate films CG-CT(control film),CG-KPE1(1%KPE),CG-KPE2(2%KPE),and CG-KPE3(3%KPE)to investigate their effects on active packaging functionality and sliced-beef sausage quality.Consequently,CG-KPE films demonstrated a superior antimicrobial effect on Grampositive(Staphylococcus aureus and Bacillus cereus)and Gram-negative(Escherichia coli)bacteria and antioxidant efficacy compared to CG-CT films.The scanning electronic microscopy(SEM)of CG-KPE films revealed an enhanced micrograph.Fourier transform infrared spectroscopy(FTIR)and differential scanning calorimetry(DSC)evidenced the intramolecular interaction between KPE and CG and the improved thermal stability of film matrix.Film X-ray diffraction(XRD)peaks revealed a good crystallinity.CG-KPE films exhibited better physical and mechanical properties,increased opacity,and better ultraviolet(UV)emission barrier due to KPE addition and pigmentation compared to CG-CT films.The quick biodegradability of CG-KPE film suggested potential for KPE as a biopolymer.Subsequently,sliced-beef sausages were packaged with CG-CT,CG-KPE1,CG-KPE2,and CG-KPE3(respective to CT,TI,T2,and T3)and stored for 12 d(4±1℃).The product’s pH and moisture content were controlled due to KPE addition in CG-KPE films.The products revealed that during storage CG-KPE treatments had a positive impact on the textural property,the color stability,and the sensory quality compared to CG-CT treatments.CG-KPE treatments showed antimicrobial effectiveness and lesser TBARS values than CG-CT treatments during storage.展开更多
Maltol(MAL)and ethyl maltol(EMAL)are volatile flavor enhancers with antimicrobial properties,making them demonstrated candidates for bakery products.This study developed biodegradable films incorporating MAL and EMAL ...Maltol(MAL)and ethyl maltol(EMAL)are volatile flavor enhancers with antimicrobial properties,making them demonstrated candidates for bakery products.This study developed biodegradable films incorporating MAL and EMAL to enhance their antimicrobial function.Biodegradable films were produced via cast-extrusion by blending polybutylene adipate terephthalate(PBAT)with polybutylene succinate(PBS),incorporating MAL or EMAL at concentrations of 0,1.5,3,6,and 12%.Microstructures demonstrated good polymer compatibility and adhesion between the polymer and the MAL or EMAL,resulting in smooth,compact structures.Infrared absorption spectra indicated peak shifting in the C-H stretching region of the polyesters with added MAL and EMAL.This shift varied depending on the loading content and the recrystallization of MAL and EMAL,which caused phase separation from the polyester phase.The interactions between the polymer and volatile flavoring agents decreased oxygen permeability.Gas chromatography equipped with mass-spectrophotometry indicated a larger release of MAL than EMAL from PBAT/PBS matrix.Both MAL and EMAL exhibited antibacterial efficacy against Bacillus cereus,Staphylococcus aureus,and Escherichia coli,and delayed fungal growth(Aspergillus niger).However,EMAL had more antibacterial efficacy than MAL,while the MAL exhibited greater antifungal efficacy than EMAL.Moreover,the films containing MAL or EMAL effectively extended the shelf-life of packaged butter cake by more than 2-fold,with the effect increasing with loading content.The food industry will be significantly impacted by these results when it comes to improving packaging techniques to extend the shelf life of products and maintain quality.展开更多
The growing demand for food preservation has driven the development of multifunctional bio-based active packaging materials with reduced environmental impact.Herein,inulin(INL),a readily available polysaccharide from ...The growing demand for food preservation has driven the development of multifunctional bio-based active packaging materials with reduced environmental impact.Herein,inulin(INL),a readily available polysaccharide from chicory roots with limited prior use in packaging,was employed as a reducing and stabilizing agent for the eco-friendly synthesis of silver nanoparticles(AgNPs),which were further used to develop antimicrobial methylcellulose(MC)nanocomposite films.AgNPs formation was confirmed by UV-visible spectroscopy,showing a surface plasmon resonance peak at 410 nm.The AgNPs exhibited an average hydrodynamic diameter of 105 nm and a negative zeta potential(-21.7 mV),indicating good colloidal stability and a predominantly spherical shape of AgNPs with particle size in the range of 15-35 nm,as confirmed by TEM analysis.FTIR,XRD,and SEM analysis confirmed interactions between methylcellulose chains and the formation of uniform MC/INL-AgNPs films.Incorporation of inulin-stabilised AgNPs into MC films enhanced their mechanical strength(peak strength of 32.2 MPa for 20 mM films),thermal stability,UV barrier properties,and water barrier properties,as evidenced by reduced moisture content,solubility,and water vapour transmission rate(WVTR).The MC/INL-AgNPs films exhibited good antioxidant activity(56%)and potent antimicrobial activity against Gram-positive and Gram-negative strains.Silver migration into food simulants remained within permissible safety limits,confirming regulatory compliance.The nanocomposite films showed faster biodegradability,and shelf-life studies on tomatoes revealed reduced weight loss in wrapped fruits.Overall,this study demonstrates a sus-tainable nanocomposite design in which inulin plays a dual role,enabling improved compatibility,performance,and food-contact safety,highlighting its potential for active food packaging applications.展开更多
Peptides produced from food and other protein resources have gained immense interest to the researcher owing to their excellent antioxidant and antimicrobial properties.The inclusion of bioactive peptides into the foo...Peptides produced from food and other protein resources have gained immense interest to the researcher owing to their excellent antioxidant and antimicrobial properties.The inclusion of bioactive peptides into the food packaging system could be beneficial to improve the shelf life of packed food as well as helpful to reduce the use of unhealthy food preservatives.Moreover,owing to consumer awareness,recently there has been a growing interest in safe and biodegradable packaging materials.Therefore,the study on peptide-added functional packaging could be a good approach to fulfil these demands.Reports have already shown that the addition of bioactive functional peptides retard the oxidation of lipids in food as well as inhibits the growth of food-borne pathogens.The application of the peptide-based packaging film has been studied in various food systems and the resulting insight of those work indicates the potential of peptides as an alternative to synthetic food preservatives.展开更多
基金funded by Universitas Andalas under the project“Riset Kolaborasi Indonesia(Skema A)”,number 3/UN16.19/PT.01.03/PRK-RKI Skema A(Host)/2023。
文摘In this study,an active packaging film was developed using polyvinyl alcohol(PVA)incorporated with Bajakah Tampala(BT)extract,which acts as an antimicrobial agent and UV-protective additive.The solution casting method was employed,with BT extract concentrations ranging from 0.5 to 2 wt%.The BT extract exhibited strong antimicrobial properties and significant UV-protection,with a total phenolic content and IC_(50) values of 242.88±0.34 mg GAE/g and 7.83±0.03μg/mL,respectively.Incorporating 2 wt%BT extract into the PVA matrix resulted in substantial UV-light protection and enhanced tensile strength by 55.1%,tensile modulus by 167.2%,elongation at break by 53.1%,toughness by 84.3%,and crystallinity index by 21.8%.Additionally,the composite film retained moderate antimicrobial and antioxidant activity.These findings demonstrate PVAbased active packaging enriched with BT extract offers promising properties for food packaging applications,including enhanced mechanical strength,UV resistance,barrier performance,and antimicrobial protection.
基金acknowledge the Coordination for the Improvement of Higher Education Personnel(CAPES)for financial support(Funding Code 001)the National Council for Scientific and Technological Development(CNPq)+1 种基金the Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro(FAPERJ)for the support provided through project E-26/210.142-2019.
文摘This study proposes the development of nanocomposite films based on poly(butylene adipate-co-terephthalate)(PBAT)incorporated with different concentrations of molybdenum trioxide(MoO3)for use in biodegradable packaging.The films were produced by extrusion followed by calendering and characterized using Fourier-transform infrared spectroscopy(FTIR),time-domain nuclear magnetic resonance(TD-NMR),water activity(aW)analysis,and contact angle measurements.FTIR results indicated physical interactions between the polymer matrix and the nanoparticles,particularly in the carbonyl group region.TD-NMR analysis revealed restricted molecular mobility of the PBAT chains in samples with lower MoO3 content,suggesting good nanoparticle dispersion.Water activity decreased with increasing MoO3 concentration,indicating improved barrier properties.Contact angle measurements showed that the formulation with 0.1%MoO3 exhibited greater hydrophilicity,due to the generation of more heterogeneous materials,which is in agreement with the TD-NMR measurements.The results suggest that controlled incorporation of MoO3 can enhance the structural and functional properties of PBAT,reinforcing its potential as a material for active and sustainable packaging.
基金The State Key Laboratory of Utilization of Woody Oil Resource(Grant no.2019XK 2002)National Natural Science Foundation of China(Grant no.31972172)+1 种基金Natural Science Foundation of Jiangsu Province(Grant no.BK20201417 and BK20220522)Jiangsu Province Research Fund(Grant no.JNHB-131)funded this research.
文摘Edible film combined with nanotechnology is one of the strategies of food intelligent packaging to extend food shelf life.Herein,eugenol-loaded sodium caseinate and trimethyl chitosan composite nanoparticles(ESTNPs)were firstly prepared to improve bioavailability and stability.Subsequently,gelatin films loaded with ESTNPs were fabricated,and microscopic results showed good biocompatibility between nanoparticles and gelatin.The incorporation of ESTNPs significantly improved the light/water/oxygen barrier properties and thermal stability of the film(p<0.05),while it weakened the mechanical performance.ESTNPs endowed the film with excellent antibacterial efficiency(exceeded 99.99%)and enhanced its antioxidant activity.The ESTNPs/gelatin composite film exhibited good storage stability.The release behavior of eugenol from the film indicated that the composite film was more suitable for acidic foods,which could be used for meat packaging.Results in the antibacterial and preservation tests on chicken breast meat confirmed that the composite film could indeed serve as an active food packaging film for extending the shelf life of the meat without side-effect on the chroma,texture and sense quality.Hence,the prepared edible film combined with ESTNPs has great potential in extending food shelf life and provide a strategy for the preparation of active packaging.
文摘Active packaging based on biomaterials and essential oils is an alternate for plastic ones.But,essential oils are chemically and physiologically labile,and they have strong scents,limiting their use as antimicrobial additives in food.Thus,in this investigation,basil oil was encapsulated in silica nanoparticles(basil oil@SiNPs)and combined with chitosan films(basil oil@SiNPs@chitosan).Scanning electron microscopy(SEM),Transmission electron microscopy(TEM),X-ray diffraction(XRD),surface area and Brunauer-Emmett-Teller(BET)analysis,encapsulation and loading%were used to evaluate basil oil@SiNPs.The surface area of SiNPs decreased from 59.006 to 43.86 cm^(2)/g due to basil oil encapsulation.The encapsulation and loading%were 81.96,65.87,48.48 and 43.13,37.64,33.44%for 2,1.5,and 1 mL of basil oil,respectively.Fourier-transform infrared(FT-IR),XRD,thermogravimetric analysis(TG),mechanical,wettability,water vapor permeability(WVP),oxygen permeability(OP)features;water vapor sorption isotherms and antimicrobial inhibition tests were used to describe the produced basil oil@SiNPs@chitosan films.Water contact angles and activation energy increased from 89.0◦to 110.9◦and-11.97 to-20.40 kJ/mol,respectively after addition of basil oil@SiNPs.However,WVP decreased from 5.9580×10^(-1)±0.33 to 4.2413×10^(-1)±0.55 g.mm.m^(-2).h^(-1).kPa^(-1)and OP increased from 4.094×10^(-4)±0.52 to 6.715×10^(-5)±0.32(g.m^(-2).day^(-1).atm^(-1)).The four models Guggenheim-Anderson-de Boer(GAB),Smith,Henderson and SIPSI were suitable for describing the moisture sorption of basil oil@SiNPs@chitosan films.Basil oil@SiNPs has antimicrobial inhibition against Gram positive and negative bacteria,pathogenic yeast.
基金supported by the National Natural Science Foundation of China(Grant No.32160610)Incubation Project for High-Level Scientific Research Achievements of Hubei Minzu University(Grant No.4205017).
文摘To explore the dihydromyricetin or eugenol loaded nanofiber’s potential as food active packaging,0%,0.1%,0.5%,and 1.0%dihydromyricetin or eugenol loaded nanofibers were fabricated by electro-blowing spinning,which increased the yield of nanofibers by a factor of 10 times compared to that of traditional electrospinning.The morphology observation by scanning electron microscopy showed similar morphology and diameter distribution of the dihydromyricetin or eugenol nanofibers.Fourier transform infrared spectra analysis indicated that eugenol or dihydromyricetin interacted with proteins through hydrogen bonding.X-ray diffraction profiles of the nanofibers indicated that dihydromyricetin was uniformly distributed within the nanofibers.Nanofibers encapsulated with various concentrations of eugenol or dihydromyricetin showed better barrier properties against water vapors than the free nanofibers,which indicated that the hydrophobic eugenol and dihydromyricetin inhibited the permeation of water molecules through the nanofibers.Tensile tests showed that the nanofibers loaded with 0.5%eugenol or 1.0%dihydromyricetin exhibited relatively higher elastic moduli and lower elongation at break.The nanofibers loaded with dihydromyricetin showed comparable antioxidant activity to that with eugenol in the aspect of ferric and cupper reducing activity,while that with 0.1%-1.0%dihydromyricetin showed superior DPPH radical scavenging activity.Furthermore,both eugenol and dihydromyricetin loaded gelatin/zein nanofibers showed effective antimicrobial activities against Escherichia coli and Staphylococcus aureus.Overall,the dihydromyricetin loaded gelatin/zein nanofibers showed comparable physical and functional properties compared to eugenol,which suggests the application of dihydromyricetin nanofibrous films on food active packaging and the potential application of dihydromyricetin on functional food delivery systems.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(No.2022R1A2B02001422).
文摘Silver nanoparticles(AgNPs)were manufactured using the green method mediated by enoki mushroom water extract,and starch/agar functional films were fabricated.The developed AgNPs were small(~10 nm)and spherical and showed strong antibacterial activity towards foodborne pathogenic bacteria,L.monocytogenes,and E.coli.AgNPs were unvaryingly dispersed in the starch/agar matrix,and the inclusion of AgNPs pointedly enhanced the water vapor barrier and hydrophobicity of the starch/agar-based films.However,adding AgNPs did not affect the films’mechanical strength and thermal stability.Also,the AgNPs-added starch/agar film displayed potent antibacterial activity towards E.coli and L.monocytogenes.Starch/agar films with better physical(mechanical strength,water vapor barrier)and functional properties(antibacterial activity)are expected to be applied in active food packaging.
文摘The current study involves the fabrication of polysaccharide-based films containing Chitosan(CS)-Pullulan(PL)and Taro starch(TS),all derived from conventional sources.The extraction of starch from Taro(Colocasia esculenta)tubers was carried out by employing the wet-milling process in the laboratory.The main study was aimed at studying the influence of added TS into the CS-PL matrix through various characterization techniques such as mechanical,structural,spectroscopic,thermal,morphological and biological studies.The added TS was found to enhance the tensile strength as well as the crystallinity of the chitosan/pullulan(CP)blend films.The blend films showed a decline in the opacity values with the addition of TS.The effective interaction between the blended components indicated stronger intermolecular hydrogen bonding between them which was confirmed through FTIR and DSC studies.The thermal analysis depicted that the TS incorporated blend films degraded at a slightly higher temperature than the control film.The developed films were found to be hydrophobic in nature,with increasing hydrophobicity with increase in concentration of TS.The fabricated films were found to be biologically active i.e.,antimicrobial and antioxidant,which is due to the presence of certain active compounds present in the taro tubers.These outcomes suggest that these films can be harnessed as active packaging materials in the food industry.
基金Prince of Songkla University(PSU),Hat Yai,Songkhla,Thailand(Grant Number AGR581246S).
文摘The synergistic effect of organoclay(OC)and zinc oxide(ZnO)nanoparticles on the crucial properties of poly(lactic acid)(PLA)nanocompositefilms was systematically investigated herein.After their incorporation into PLA via the solvent casting technique,the water vapor barrier property of the PLA/OC/ZnOfilm improved by a maximum of 86%compared to the neat PLAfilm without the deterioration of Young’s modulus or the tensile strength.Moreover,thefilm’s self-antibacterial activity against foodborne pathogens,including gram-negative(Escherichia coli,E.coli)and gram-positive(Staphylococcus aureus,S.aureus)bacteria,was enhanced by a max-imum of approximately 98–99%compared to the neat PLAfilm.Furthermore,SEM images revealed the homo-geneous dispersion of both nano-fillers in the PLA matrix.However,the thermal stability of thefilm decreased slightly after the addition of the OC and ZnO.Thefilm exhibited notable light barrier properties in the UV-Vis range.Moreover,the incorporation of a suitable biodegradable plasticizer significantly decreased the Tg and notably enhanced theflexibility of the nanocompositefilm by increasing the elongation at break approxi-mately 1.5-fold compared to that of the neat PLAfilm.This contributes to its feasibility as an active food packa-ging material.
文摘The authors regret that an incorrect FE-SEM image was inadvertently inserted in Fig.6 of the published article.Specifically,the surface FE-SEM image corresponding to the Active 1%sample was mistakenly replaced with the wrong cropped image during figure preparation.
基金Youth Project of Shanxi Basic Research Program(202203021222032)thanks to the National Research Foundation of Korea(NRF)which was funded by the Ministry of Education(2020R1I1A3052258).
文摘There is a growing interest in bioplastic-based degradable and sustainable packaging film and in this regard,poly(butylene adipate-co-terephthalate)(PBAT)can be a good choice owing to similar flexibility to commonly used traditional plastic.Even though poly butylene adipate-co-terephthalate is promising as an alternative,it lacks many desirable properties such as working as a barrier,mechanical strength,transparency,and functionality for active food packaging systems.Therefore,adding functional fillers can be helpful to achieve this goal.The nanoceria and metakaolin are known as active ingredients,and adding these fillers in PBAT film is expected to enhance the physical and functional properties.The functional packaging film made with PBAT was produced by mixing the solution and casting it.The addition of fillers nanoceria(CeO_(2)NPs)and metakaolin(MK)has improved the film’s mechanical characteristics,hydrophobicity,and barrier qualities significantly.Moreover,the antimicrobial resistance properties towards Gram-negative and positive bacterial strains also increased point-edly.Therefore,the PBAT packages for food can greatly benefit from the use of functional packaging film.
基金supported by the Innovation and Entrepreneurship Training Program for College Students in Jiangsu Province(202410295126Y).
文摘Development of novel packaging is one of the research hotspots in food industry. In this study, a biodegradablefilm substrate was constructed with sodium alginate (SA) and gelatin (GEL), rose polyphenol extract (RPE) wasinvolved in which to prepare active packaging film, and its application in edible oil packaging was evaluated. Asthe volume ratio of SA to GEL was 7:3 (SA7-GEL3), an optimal tensile strength and elongation at break of the filmwere obtained, which were 51.47 MPa and 27.05%, respectively. When incorporating RPE into the film, itsmechanical properties reduced while opacity and antioxidative activity increased significantly as compared tothe SA7-GEL3 films. The release of RPE in 50%, 95% ethanol solution were lower than that in water after 240 h,indicated its feasibility for packaging high-fat food. As applied the 0.3RPE film in packaging edible oils, itsapplication form in bag packaging had significantly higher antioxidative properties than top-covering. Comparedto plastic ziplock bag packaging, the shelf life of sunflower oil and lard packaged in 0.3RPE film bags extended by110 days and 71 days, respectively. This work suggested a promising alternative food packaging material withbiodegradable substrate and RPE. It could provide a new idea for packaging edible oils that rich in unsaturatedfatty acids and novel strategy of using by-products of edible rose processing.
基金supported by Distinguished Youth Talent Program of Fujian Agriculture and Forestry University(xjq201912)the National Natural Science Foundation of China(31801616)+1 种基金Scientific Research Foundation of Hainan Tropical Ocean University(RHDRC202117)Excellent Master Thesis Fund Project of Fujian Agriculture and Forestry University(1122YS01002)。
文摘Recently,food grade nanofiber-based materials have received growing attentions in food packaging.In this work,novel active and intelligent packaging nanofibers based on gelatin/chitosan with curcumin(GA/CS/CUR)were developed via electrospinning technique.Effects of the incorporation of CUR content(0.1%-0.3%,m/m)on the microstructure and functional properties of the electrospun nanofibers were investigated.Morphological studies using scanning electron microscopy indicated that loading CUR can affect the average diameter of nanofiber mats,which remained around 160-180 nm.The addition of an appropriate level CUR(0.2%,m/m)led to a stronger intermolecular interaction,and thus enhanced the thermal stability and tensile strength of the obtained nanofibers.Meanwhile,the incorporation of CUR significantly improved antioxidant activity and the antimicrobial activity of GA/CS/CUR nanofibers.Moreover,the sensitivity of nanofibers to ammonia results indicated that GA/CS nanofibers containing 0.2%CUR(GA/CS/CURⅡ)presented high sensitivity of colorimetric behavior to ammonia(within 3 min).These results suggest GA/CS/CURⅡnanofibers has great potential as a multifunctional packaging to protect and monitor the freshness of proteinrich animal foods,such as meat and seafood.
基金National Key RD Program of China 2022YFA1304200 for providing funds support of this research.
文摘The quality assurance of muscle foods poses a significant challenge,as they serve as crucial dietary sources for human health.Currently,there is a growing interest in utilizing phytochemicals as a natural solution for preserving muscle foods due to their advantageous bioactive properties and safety profile.The encapsulation of phytochemicals through controlled release technology holds promise in improving the stability,bioavailability,and sustained antimicrobial and antioxidant effects of these compounds in muscle food preservation.Optimizing the physicochemical properties and biological activities of phytochemicals improves their applicability and expands their functionalities when applied to the preservation of muscle foods.This study underscores the impact of microbial degradation,lipid-protein oxidation,and the generation of heterocyclic aromatic amines(HAAs)as critical factors influencing the quality and safety of muscle food preservation.More importantly,various controlled release systems that employ phytochemicals as active preparations in muscle food preservation are summarized.They can be divided into three main categories:micro-nanoencapsulation,active edible packaging,and their combinations.
文摘Herein,chitosan/pullulan(CS/PL)active films incorporated with quinic acid(QA)and montmorillonite(MMT)were fabricated,and their potential for tofu slice preservation was evaluated.The FTIR analysis confirmed the enhanced intermolecular interactions between the components of the film matrix.SEM micrographs displayed compact and homogeneous surfaces,ensuring the compatibility of MMT and QA within the CS/PL matrix.These enhancements contributed to a significant improvement in the physicochemical properties of active films.The incorporation of MMT improved the water barrier properties of the film,while QA instilled antimicrobial qualities.Thus,MMT and QA incorporated CS/PL active film presented superior mechanical(tensile strength of~68.51 MPa),UV shielding,water vapor barrier(3.51×10^(-10) gm^(-1)S^(-1)Pa^(-1)),and oxygen barrier features compared to control CS/PL film.It also performed superior antimicrobial and antioxidant functionality,strengthening tofu slice preservation.During preservation,changes in the visual appearance and biochemical constituents of tofu slices have been analyzed.Compared to the unwrapped tofu slice,the tofu slice wrapped in MMT and QA incorporated CS/PL active film displayed greater visual acceptance and retained its biochemical constituents and antioxidant ability.Moreover,the CS/PL active film containing MMT and QA safeguarded the tofu slice more effectively with minimal weight loss(~16.67%)and bacterial count(6.46 log CFU/g)over 72 h of storage at RT than the control CS/PL film.Hence,the fabricated CS/PL active films integrated with MMT and QA can be employed as a functional packaging material for tofu slice preservation.
文摘Cellulose nanocrystals(CNC)-reinforced biopolymers have emerged as a widely embraced approach for enhancing the characteristics of biopolymers due to their exceptional properties.Biocomposite(Chl-CNC)films were fabricated by blending Chlorella biomass and varying concentrations of CNCs via a solution casting technique.CNCs were effectively isolated from hemp stalk fibers,as confirmed by structural,surface,thermal,and morphological analysis.The crystallinity of films increased by CNC incorporation,which was confirmed by the XRD.The presence of molecular interactions between CNC and protein-rich Chlorella biomass was illustrated with the FTIR analysis.These interactions enhanced the physicochemical properties of the films.Further,films demonstrated a high level of soil biodegradation in the 42 days,while their total phenolic,chlorophyll,carotenoid contents,and antibacterial activity were unaffected by the incorporation of CNCs.The Chl-CNC films,regardless of CNC addition,indicated antimicrobial activity toward Escherichia coli but not Staphylococcus aureus.These results indicate that developed biobased and biodegradable Chl-CNC films could be highly beneficial in active food packaging applications.
基金supported by the National Research Foundation of Korea(project number:RS-2025-02213468).
文摘Reducing agricultural by-products and upcycling them into high-value-added functional materials is a crucial strategy for achieving environmental sustainability in the food industry.Therefore,this study aims to engineer a sustainable,high-performance antioxidant packaging film based on a PHBH/PBAT blend reinforced with upcycled walnut shell-derived carbon dots(wCDs)via a scalable extrusion.We hypothesized that wCDs could serve as multifunctional nanofillers,enhancing the physicochemical barrier and antioxidant properties of the PHBH/PBAT matrix.wCDs were synthesized from walnut shell waste through a green hydrothermal method and exhibited zero-dimensional morphology with excellent radical-scavenging activity.wCDs were then incorporated into the PHBH/PBAT matrix using twin-screw extrusion,serving as multifunctional nanofillers.The resulting nanocomposites exhibited excellent UV-blocking capabilities,reducing UV transmittance to near-zero levels,and improved oxygen-barrier properties,increasing the oxygen-barrier property by approximately 21%relative to the neat blend.Furthermore,the wCDs imparted strong antioxidant activity to the films,with the 3.0 wt%loaded film scavenging 96.5%of ABTS radicals.The practical efficacy was confirmed through food application tests using extra-virgin olive oil,in which the nanocomposite pouches significantly suppressed lipid peroxidation during storage.These findings demonstrate that integrating biowaste-derived wCDs into biodegradable polymers via scalable extrusion offers a promising,eco-friendly strategy for oil packaging that extends the oxidative shelf life of oily food products.
文摘In the present study,different doses of lyophilized kiwifruit peel powder extract(KPE)were incorporated into carboxymethyl cellulose(CMC)and gum Arabic(GA)based polymer matrices to fabricate films CG-CT(control film),CG-KPE1(1%KPE),CG-KPE2(2%KPE),and CG-KPE3(3%KPE)to investigate their effects on active packaging functionality and sliced-beef sausage quality.Consequently,CG-KPE films demonstrated a superior antimicrobial effect on Grampositive(Staphylococcus aureus and Bacillus cereus)and Gram-negative(Escherichia coli)bacteria and antioxidant efficacy compared to CG-CT films.The scanning electronic microscopy(SEM)of CG-KPE films revealed an enhanced micrograph.Fourier transform infrared spectroscopy(FTIR)and differential scanning calorimetry(DSC)evidenced the intramolecular interaction between KPE and CG and the improved thermal stability of film matrix.Film X-ray diffraction(XRD)peaks revealed a good crystallinity.CG-KPE films exhibited better physical and mechanical properties,increased opacity,and better ultraviolet(UV)emission barrier due to KPE addition and pigmentation compared to CG-CT films.The quick biodegradability of CG-KPE film suggested potential for KPE as a biopolymer.Subsequently,sliced-beef sausages were packaged with CG-CT,CG-KPE1,CG-KPE2,and CG-KPE3(respective to CT,TI,T2,and T3)and stored for 12 d(4±1℃).The product’s pH and moisture content were controlled due to KPE addition in CG-KPE films.The products revealed that during storage CG-KPE treatments had a positive impact on the textural property,the color stability,and the sensory quality compared to CG-CT treatments.CG-KPE treatments showed antimicrobial effectiveness and lesser TBARS values than CG-CT treatments during storage.
基金supported by Kasetsart University Research and Development Institute(KURDI),Kasetsart University,Thailand,FF(KU)5.67Mettler-Toledo(Thailand)Ltd.,Thailand for the support of TGA/DSC3+.
文摘Maltol(MAL)and ethyl maltol(EMAL)are volatile flavor enhancers with antimicrobial properties,making them demonstrated candidates for bakery products.This study developed biodegradable films incorporating MAL and EMAL to enhance their antimicrobial function.Biodegradable films were produced via cast-extrusion by blending polybutylene adipate terephthalate(PBAT)with polybutylene succinate(PBS),incorporating MAL or EMAL at concentrations of 0,1.5,3,6,and 12%.Microstructures demonstrated good polymer compatibility and adhesion between the polymer and the MAL or EMAL,resulting in smooth,compact structures.Infrared absorption spectra indicated peak shifting in the C-H stretching region of the polyesters with added MAL and EMAL.This shift varied depending on the loading content and the recrystallization of MAL and EMAL,which caused phase separation from the polyester phase.The interactions between the polymer and volatile flavoring agents decreased oxygen permeability.Gas chromatography equipped with mass-spectrophotometry indicated a larger release of MAL than EMAL from PBAT/PBS matrix.Both MAL and EMAL exhibited antibacterial efficacy against Bacillus cereus,Staphylococcus aureus,and Escherichia coli,and delayed fungal growth(Aspergillus niger).However,EMAL had more antibacterial efficacy than MAL,while the MAL exhibited greater antifungal efficacy than EMAL.Moreover,the films containing MAL or EMAL effectively extended the shelf-life of packaged butter cake by more than 2-fold,with the effect increasing with loading content.The food industry will be significantly impacted by these results when it comes to improving packaging techniques to extend the shelf life of products and maintain quality.
文摘The growing demand for food preservation has driven the development of multifunctional bio-based active packaging materials with reduced environmental impact.Herein,inulin(INL),a readily available polysaccharide from chicory roots with limited prior use in packaging,was employed as a reducing and stabilizing agent for the eco-friendly synthesis of silver nanoparticles(AgNPs),which were further used to develop antimicrobial methylcellulose(MC)nanocomposite films.AgNPs formation was confirmed by UV-visible spectroscopy,showing a surface plasmon resonance peak at 410 nm.The AgNPs exhibited an average hydrodynamic diameter of 105 nm and a negative zeta potential(-21.7 mV),indicating good colloidal stability and a predominantly spherical shape of AgNPs with particle size in the range of 15-35 nm,as confirmed by TEM analysis.FTIR,XRD,and SEM analysis confirmed interactions between methylcellulose chains and the formation of uniform MC/INL-AgNPs films.Incorporation of inulin-stabilised AgNPs into MC films enhanced their mechanical strength(peak strength of 32.2 MPa for 20 mM films),thermal stability,UV barrier properties,and water barrier properties,as evidenced by reduced moisture content,solubility,and water vapour transmission rate(WVTR).The MC/INL-AgNPs films exhibited good antioxidant activity(56%)and potent antimicrobial activity against Gram-positive and Gram-negative strains.Silver migration into food simulants remained within permissible safety limits,confirming regulatory compliance.The nanocomposite films showed faster biodegradability,and shelf-life studies on tomatoes revealed reduced weight loss in wrapped fruits.Overall,this study demonstrates a sus-tainable nanocomposite design in which inulin plays a dual role,enabling improved compatibility,performance,and food-contact safety,highlighting its potential for active food packaging applications.
文摘Peptides produced from food and other protein resources have gained immense interest to the researcher owing to their excellent antioxidant and antimicrobial properties.The inclusion of bioactive peptides into the food packaging system could be beneficial to improve the shelf life of packed food as well as helpful to reduce the use of unhealthy food preservatives.Moreover,owing to consumer awareness,recently there has been a growing interest in safe and biodegradable packaging materials.Therefore,the study on peptide-added functional packaging could be a good approach to fulfil these demands.Reports have already shown that the addition of bioactive functional peptides retard the oxidation of lipids in food as well as inhibits the growth of food-borne pathogens.The application of the peptide-based packaging film has been studied in various food systems and the resulting insight of those work indicates the potential of peptides as an alternative to synthetic food preservatives.
