In this paper, we will review the most common spectroscopy technologies for food analysis, their differences and purpose of these differences. Based on the advantages and disadvantages of each technology, we will cons...In this paper, we will review the most common spectroscopy technologies for food analysis, their differences and purpose of these differences. Based on the advantages and disadvantages of each technology, we will consider the most appropriate one for every segment of food analysis.展开更多
With the development of society,the overall development of various industries in our country is unprecedentedly prosperous.However,various damaging industries with the sole goal of profit have emerged,significantly re...With the development of society,the overall development of various industries in our country is unprecedentedly prosperous.However,various damaging industries with the sole goal of profit have emerged,significantly reducing people’s experience in basic needs such as food,clothing,housing,and transportation.Food analysis course is an essential primary subject established by colleges and universities to cultivate food quality and safety talents.In order to further ensure the food safety of society,this article mainly analyzes the teaching reform path of food analysis courses under the new situation.We hope the views in this article can provide guidelines for relevant workers.展开更多
The demand for more effective,precise,and ecologically friendly ways to identify and measure different components within food matrices has driven ongoing changes in the field of food analysis.Efficient utilization of ...The demand for more effective,precise,and ecologically friendly ways to identify and measure different components within food matrices has driven ongoing changes in the field of food analysis.Efficient utilization of magnetic deep eutectic solvents(MDES)and DES-functionalized nanomaterials in food analysis holds significant potential in achieving optimal extraction efficiency,selectivity,and sensitivity for the extraction and detection of target food analytes.This review presents a comprehensive discussion of the structure,synthesis,and unique physicochemical properties of MDES and DES-functionalized nanomaterials as probable alternatives to toxic solvents used in the current food analysis practices.The MDES and functionalized nanomaterials find application in the determination of organic and inorganic contaminants,drugs,proteins,and other substances in environmental,food,and biological matrices.They are used as sorbents or solvents in extraction techniques,with high efficiency and analyte selectivity.The advancements in analytical extraction methods using MDES and DESfunctionalized nanomaterials are briefly discussed,with a focus on the latest reported studies.The molecular interactions involved are mainly due to the functionalization capacity of DES through the enhancement of the functional groups on the nanomaterial surface while maintaining structure integrity.Moreover,the environmental impacts,advantages,and disadvantages of MDES and DES-functionalized nanomaterials applied in food analysis are also summarized to highlight the loopholes for future development and improvements.展开更多
Fluorescent probes have wide applications in biological and environmental analysis due to their advantages of simple operation, convenient flexibility, high sensitivity and efficiency. They are considered to be promis...Fluorescent probes have wide applications in biological and environmental analysis due to their advantages of simple operation, convenient flexibility, high sensitivity and efficiency. They are considered to be promising tools for accurate analysis of agriculture- and food-related hazardous substances. In this review, the types and characteristics of the near-infrared fluorescence probes (NIFPs) are briefly described. The recent advances of NIFPs for precisely detecting various hazardous substances including heavy metals, sulfite and related sulfiting agents and hydrogen peroxide are summarized. Finally, the present challenges and future perspectives faced by NIFPs in food safety analysis are discussed.展开更多
Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhousha...Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhoushan Archipelago, China. Concentrations of n-3 long-chain polyunsaturated fatty acids, methyl mercury （MeHg）, and dioxin-like compounds （DLCs） in the samples were analyzed for benefit risk assessment based on BRAFO-tiered approach. Results Based on the BRAFO-tiered approach, reference scenario （no intake） and alternative scenario （intake of specific species of 200 g/week） were determined. The exposure to MeHg/DLCs via alternative scenario of all studied species did not exceed provisional tolerable weekly/monthly intake. However, the adult population with high DLCs exposure in China would significantly exceed the upper limit of DLCs via an additional alternative scenario of some species such as Auxis thazard. The results of deterministic computation showed that alternative scenario of all studied species generated clear net beneficial effects on death prevention and child IQ gain. Conclusion The alternative scenario of all studied species could be recommended to population with average DLCs exposure, and the reference scenario of species with relatively high DLCs concentration could be recommended to population exposed to high DLCs.展开更多
This study was to analyze the risk of sulfites in food consumed by the Chinese people and assess the health protection capability of maximum-permitted level （MPL） of sulfites in GB 2760-2011. Sulfites as food additi...This study was to analyze the risk of sulfites in food consumed by the Chinese people and assess the health protection capability of maximum-permitted level （MPL） of sulfites in GB 2760-2011. Sulfites as food additives are overused or abused in many food categories. When the MPL in GB 2760-2011 was used as sulfites content in food, the intake of sulfites in most surveyed populations was lower than the acceptable daily intake （ADI）. Excess intake of sulfites was found in all the surveyed groups when a high percentile of sulfites in food was intaken. Moreover, children aged 1-6 years are at a high risk to intake excess sulfites. The primary cause for the excess intake of sulfites in Chinese people is the overuse and abuse of sulfites by the food industry. The current MPL of sulfites in GB 2760-2011 protects the health of most populations.展开更多
The Brazilian Ministry of Health recommends that by 8 months of age, children should eat the same types of foods consumed by the other members of the family. Thus, this study sought to evaluate whether the nutritional...The Brazilian Ministry of Health recommends that by 8 months of age, children should eat the same types of foods consumed by the other members of the family. Thus, this study sought to evaluate whether the nutritional composition of meals specially prepared (SM) for children aged 7 to 18 months in low-income families was superior to that of meals adapted (AM) from the family’s table foods. Protein, fat, carbohydrate, energy, dietary fiber, iron, sodium and sodium chloride values, were determined by chemical analyses and compared to dietetic guidelines. The infants’ hemoglobin levels were also investigated. In total, sixty samples of the infants’ lunch meal (51 AM and 9 SM) were taken for during a home visit. The values of protein, fat, carbohydrate, dietary fiber and energy of the AM were significantly lower, while the sodium and sodium chloride values were significantly higher, compared to those of the SM. The AM also contained significantly more water. No differences were seen with regard to iron values. Sodium chloride amounted for most of the sodium content. Neither the SM nor AM was adequate in terms of iron and sodium. All SM were adequate for protein and fat, whereas AM showed significantly more samples with inadequate energy levels. SM fell within the Acceptable Macronutrient Distribution Range, while AM fell below the lower value for fat and slightly above the upper value for carbohydrate. The prevalence of anemia was 60% in the study population (36/60). In conclusion, meals adapted from the family’s table foods showed a lower nutrient density and a less balanced macronutrient range when compared to meals specially prepared for infants. The main nutritional shortcomings, for both AM and SM, were the extremely low content of iron and the high content of sodium.展开更多
Large-scale data emerge in food safety inspection and testing industry with the development of Internet technology in China.This paper was aimed at designing toxic and hazardous substance big data risk analysis algori...Large-scale data emerge in food safety inspection and testing industry with the development of Internet technology in China.This paper was aimed at designing toxic and hazardous substance big data risk analysis algorithm in food safety inspection and testing based on cloud computing^([1]).Cloud computing platform was set up to store the massive extensive data with geographical distribution,dynamic and high complexity from the Internet,and MapReduce^([2]) computational framework in cloud computing was applied to process and compute parallel data.The risk analysis results were obtained by analyzing 1000000 meat products testing data collected from the laboratory management information system based on web.The results show that food safety index IFS < 1,which proves that the food safety state is in good condition.展开更多
Terpenoids,as crucial plant secondary metabolites in honey,possess various bioactivities.This study aimed at investigating terpenoids of longan,litchi,and schefflera honey.Our results reveal that these three species o...Terpenoids,as crucial plant secondary metabolites in honey,possess various bioactivities.This study aimed at investigating terpenoids of longan,litchi,and schefflera honey.Our results reveal that these three species of honey are characterized by abundant terpenoids,with eight terpenoids and one phenylpropanoid identified.Callunene,3,4,5-trimethoxyphenylpropanal,schefflerin(4-2'-(3',4'-dihydroxy-5'-methylfuran)-3,5,5-trimethyl-2-cyclohexenone)or abscisic acids may be as the characteristic components of longan,litchi,or schefflera honey.Abscisic acids were the most abundant components,average contents reached up to 53.67,96.89 and 21.11 mg/kg,respectively,and the content ranges in three types of honey were 13.75-85.40,19.93-177.31,14.69-28.38 mg/kg,respectively.To our knowledge,the presence of schefflerin,(6R,9S)-vomifoliol,and 3,4,5-trimethoxyphenylpropanal in honey is a novel finding.We distinguish Thailand from Chinese mainland and Taiwan longan honeys,based on the ratio of abscisic acid and callunene content.Overall,our proposal to combine terpenoids with standard fingerprints seems to provide a novel and reliable solution for evaluating the authenticity of commercial honey.展开更多
Glyphosate is widely used in agriculture,and its residues accumulate in soil and water,which adversely affects human health.The existing colorimetric methods for glyphosate detection are usually achieved by inhibiting...Glyphosate is widely used in agriculture,and its residues accumulate in soil and water,which adversely affects human health.The existing colorimetric methods for glyphosate detection are usually achieved by inhibiting the catalytic activity of natural enzymes or nanozymes,and often require the participation of easily decomposable H_(2)O_(2),leading to unstable detection capabilities or even false positive results.This article reports a smartphone-assisted sensor for colorimetric detection of glyphosate in several food samples based on enhancing the laccase-like activity of cubic Ag_(2)O nanoparticles.Glyphosate can significantly enhance the generation of radicals and electron transfer in cubic Ag_(2)O reaction solution,causing an obvious change in the color of the system,which can be easily distinguished by naked eye.The established sensor has excellent detection performance,with limit of detection as low as 2.09 μg/L,and it is highly selective to other competitive substances.The method of enhancing the enzyme-mimic activity of nanomaterials to detect glyphosate residues is proposed for the first time,which can avoid false positive results caused by traditional enzyme inhibition methods and complex food matrices.Moreover,smartphones can simplify the conventional analysis procedure and achieve convenient on-site monitoring of glyphosate pesticides in food.展开更多
Five minerals or dements, crude protein, lysine, methionine＋cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthoru （Hippophae rhamnoides ssp. sinensis） using the method of ...Five minerals or dements, crude protein, lysine, methionine＋cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthoru （Hippophae rhamnoides ssp. sinensis） using the method of ＂food analysis＂. The decision values （δi） of seabuckthoru seeds, leaves and fruit residues rank in the fifth, sixth and ninth position among the 16 types of fodder. Seeds, leaves and fruit residues of seabuckthoru are suitable for livestock and poultry fodder. The weights of livestock and poultry are considerably increased after feeding with seabuckthoru. The development of seabuckthoru should have great potentials as food, pre-food and food additives for livestock and poultry in north China, Processing facilities should pay more attention to seabuckthoru food development methods and strategies and the seabuckthorn fodder industry should be promoted.展开更多
Cold-pressed oils from six herb plant seeds and four woody plant seeds were analyzed and compared for their quality characteristics such as oil, crud protein, shell, and moisture content, fatty acid （FA） compositio...Cold-pressed oils from six herb plant seeds and four woody plant seeds were analyzed and compared for their quality characteristics such as oil, crud protein, shell, and moisture content, fatty acid （FA） compositions and oxidation stability. Results showed that walnut kernel contained the greatest amount of seed oil and safflower seed contained the lowest. Safflower, pumpkin, hemp, camellia and peony seeds had high shell content, their kernel oil content significantly increased after shelling. These oils had significant differences （p〈0.01） in levels of fatty acids and the ratio of n-6：n-3 fatty acids. Camellia, safflower, and flax seed oil contained the highest oleic acid, linoleic acid, and a-linolenic acid respectively. Hemp seed oil was observed in a 3.53：1 ratio of n-6 and n-3 fatty acids. All these ten oils were obviously different in moisture and volatile content, acid value, peroxide value and induction period （IP） （p〈0.01）. IP of peony seed oil was lowest （0.94 h） and almond oil was the highest （14.10 h）. IP of oils negatively correlated with polyunsaturated fatty acids content ^=-0.664, p=0.036）. These studies of ten cold-pressed oils may provide better explanation for their potential health benefits and further developing their commercial value.展开更多
The extensive use of antibiotics in farming has led to their accumulation in animal-derived food products,posing human health risks.Electrochemical sensors offer advantages such as simplicity,cost-effectiveness,and hi...The extensive use of antibiotics in farming has led to their accumulation in animal-derived food products,posing human health risks.Electrochemical sensors offer advantages such as simplicity,cost-effectiveness,and high sensitivity for antibiotic residue monitoring.Herein,we developed an electrochemical sensor based on laserinduced graphene integrated with poly(3,4-ethylenedioxythiophene)and gold nanoparticles(AuNPs/PEDOT/LIG).This work introduces a rational integration of these three components for the simultaneous detection of chloramphenicol(CAP)and enrofloxacin(ENR)residues in food samples through the well-separated oxidation potentials,rather than through specific molecular recognition.Comprehensive characterization of AuNPs/PEDOT/LIG confirmed its successful fabrication,excellent conductivity,efficient charge transfer,and strong electrocatalytic activity.The electrochemical sensor exhibited exceptional performance within a linear range of 2 nM to 450μM and 2 nM to 400μM for CAP and ENR.Limits of detection were 1.38 nM and 1.14 nM,with limits of quantification of 4.60 nM and 3.80 nM for CAP and ENR,respectively.It demonstrated remarkable selectivity,reproducibility,repeatability,and was successfully applied to detect CAP and ENR residues in grass carp,beef,and pork,achieving recoveries of 91.70%to 101.90%with relative standard deviations below 5%.The electrode fabrication process is facile and low-cost,making it suitable for large-scale production.The sensor is suitable for ENR detection,while CAP monitoring is limited to research or less demanding settings.Given its stability profile,the sensor is best suited for single-use or short-term batch analyses for cost-effective screening.This platform offers a promising strategy for antibiotic screening in food.展开更多
A study was carried out to quantitatively estimate the L-theanine content in 19 teas commercially available in the Kenyan market by High Performance Liquid Chromatography (HPLC). The test tea samples analyzed were gre...A study was carried out to quantitatively estimate the L-theanine content in 19 teas commercially available in the Kenyan market by High Performance Liquid Chromatography (HPLC). The test tea samples analyzed were green (n = 4), black (n = 8) and flavored (n = 7) teas from different origins viz., Kenya (n = 4), Uganda (n = 2), Tanzania (n = 5), Rwanda (n = 4), Cameroon (n = 1) and Sri-Lanka (n = 2) commercially available in the Kenyan market. The estimated Limit of Detection (LOD) of the current method was 0.01% L-theanine. The L-theanine content ranged from below the detection limit (<0.01% L-theanine) to 1.60% L-theanine on a dry weight (d.w) basis. Statistically significant differences (p < 0.05) were observed in the L-theanine contents of black, green and flavoured teas. Rwandan green tea contained the highest L-theanine content with 1.60% d.w. whereas six of the seven flavoured teas had very low theanine levels (<0.01%) that could not be quantified by the current method.展开更多
The use of genetically modified organisms （GMOs） as food products becomes more and more widespread. The European Union has implemented a set of very strict procedures for the approval to grow, import and/or utilize ...The use of genetically modified organisms （GMOs） as food products becomes more and more widespread. The European Union has implemented a set of very strict procedures for the approval to grow, import and/or utilize GMOs as food or food ingredients. Thus, analytical methods for detection of GMOs are necessary in order to verify compliance with labelling requirements. There are few effective screening methods for processed GM （genetically modified） products. Three anti-herbicide genes （CP4- EPSPS, BAR and PAT） are common exogenous genes used in commercialized transgenic soybean, maize and rice, In the present study, a new SYBR Green qPCR screening method was developed to simultaneously detect the three exogenous anti-herbicide genes and one endogenous gene in a run. We tested seven samples of representative processed products （soya lecithin, soya protein powder, chocolate beverage, infant rice cereal, maize protein powder, maize starch, and maize jam） using the developed method, and amplicons of endogenous gene and transgenic fragments were obtained from all the processed products, and the sensitivity was 0.1%. These results indicated that SYBR Green qPCR screening method was appropriate for qualitative detection of transgenic soybean, maize and rice in processed products.展开更多
There is an urgent need to provide a rapid and selective method to analyze food and water samples contaminated with Staphylococcus aureus since it is one of the most potential food and waterborne pathogens.Thus,a port...There is an urgent need to provide a rapid and selective method to analyze food and water samples contaminated with Staphylococcus aureus since it is one of the most potential food and waterborne pathogens.Thus,a portable bio-sensing system and disposable bacterial-sensor chips consisted of anti-S.aureus@MPA/Au NPs-Cu-MOF@SPE were designed,fabricated,and applied for 20-min-based analysis of food and water samples.In this regard,screen-printed electrodes(SPEs)were functionalized with a new synthesized copper-metal organic framework(Cu-MOF)conjugated with gold nanoparticles(Au NPs)to eff ectively promote the chemical immobilization of the bio-receptor(anti-S.aureus antibody)onto the sensor matrix using the mercaptopropionic acid(MPA)as a chemical cross-linker.Subsequently,parameters aff ecting the bacterial-sensing effi-cacy were studied and optimized.Accordingly,high sensitivity was obtained with a wide dynamic linear range from 1×10 to 1×10^(7)colony forming units per milliliter(CFU/m L)with correlation coefficient(R^(2))of 0.990,limit of detection and limit of quantification of 0.132 CFU/m L,and 0.440 CFU/m L,respectively.High selectivity was provided since no electrochemical signals were obtained from various non-targeting strains of common pathogens,including the Pseudomonas aeruginosa,Escherichia coli,Salmonella enterica,Streptococcus mutans,and Enterococcus faecalis.Eventually,the newly developed handheld bacterial-sensing platform was applied for the rapid analysis of S.aureus in food and water samples.展开更多
In this study,a simple enzyme-free co-system signal amplification method was proposed for the ultra-sensitive fluorescent detection of AFB1 in peanut samples.The sensing system cleverly combines Mg^(2+)dependent DNAzy...In this study,a simple enzyme-free co-system signal amplification method was proposed for the ultra-sensitive fluorescent detection of AFB1 in peanut samples.The sensing system cleverly combines Mg^(2+)dependent DNAzyme(MNAzyme)cleavage with co-system reactions.The prepared mixed solution was supplemented with AFB1 and signal molecules to facilitate specific binding of the target with the aptamer(Apt).Apt and competing chain cDNA complexes were dissociated,releasing cDNA which subsequently hybridized with complementary chain HDNA to activate the catalytic activity of MNAzyme.Subsequently,cleavage of fluorescent signal substrate F-DNA occurred,resulting in amplification of the fluorescent signal.Under optimal conditions,the fluorescent intensity is linearly correlated with the logarithm of the target AFB1 concentration in a dynamic range of 3 orders of magnitude from 0.1 ng mL^(-1) to 500 ng mL^(-1).The method has high selectivity for AFB1,and the detection limit is 0.083 ng mL^(-1).The recovery of the aptasensor was tested in peanut samples,and the recovery of the aptasensor was between 93.8 and 108%,which proved its practical application value in food safety field.展开更多
Computing the food component(nutrient)amount in 100 kilocalories,100 grams or 100 milliliters,the reference amount customarily consumed(RACC),or 50 grams of food demonstrates the food component amount of some foods un...Computing the food component(nutrient)amount in 100 kilocalories,100 grams or 100 milliliters,the reference amount customarily consumed(RACC),or 50 grams of food demonstrates the food component amount of some foods unsuitably.So,selecting some foods based on them may elevate the hazards of some chronic diseases.Computing the food component amount and assessing suitable levels of food components and the nutritional quality according to the Codex Alimentarius Commission(CAC),the United States Food and Drug Administration(FDA),and the suggested procedure were implemented on 8,596 food cases,29 food components,and 25 food categories.Selecting some foods under the FDA and CAC to reach sufficient intakes of positive food components surpassed energy demands.Selecting some foods under the CAC did not satisfy the demands of positive food components.Some foods that satisfied the demands of positive food components were not suitable food selections under the CAC.Selecting some foods under the FDA or CAC surpassed the demands of negative food components(including cholesterol,energy,fat,saturated fat,and sodium).Some foods that did not surpass the demands of negative food components were not suitable food selections under the CAC or FDA.Due to the vulnerabilities of selecting foods on the basis of the reference amounts of food,fast foods under the CAC and FDA in serving size(the serving size or serving is obtained from the RACC),spices and herbs under the CAC in 100 grams or 100 milliliters,and vegetables and vegetable products under the CAC in 100 kilocalories obtained the highest average scores for nutritional quality based on positive food components(including vitamins,protein,dietary fiber,and minerals,excluding sodium)among food categories for children aged four years and older and adults.展开更多
Distinguishing aesthetically pleasing food photos from others is an important visual analysis task for social media and ranking systems related to food.Nevertheless,aesthetic assessment of food images remains a challe...Distinguishing aesthetically pleasing food photos from others is an important visual analysis task for social media and ranking systems related to food.Nevertheless,aesthetic assessment of food images remains a challenging and relatively unexplored task,largely due to the lack of related food image datasets and practical knowledge.Thus,we present the Gourmet Photography Dataset(GPD),the first largescale dataset for aesthetic assessment of food photos.It contains 24,000 images with corresponding binary aesthetic labels,covering a large variety of foods and scenes.We also provide a non-stationary regularization method to combat over-fitting and enhance the ability of tuned models to generalize.Quantitative results from extensive experiments,including a generalization ability test,verify that neural networks trained on the GPD achieve comparable performance to human experts on the task of aesthetic assessment.We reveal several valuable findings to support further research and applications related to visual aesthetic analysis of food images.To encourage further research,we have made the GPD publicly available at https://github.com/Openning07/GPA.展开更多
文摘In this paper, we will review the most common spectroscopy technologies for food analysis, their differences and purpose of these differences. Based on the advantages and disadvantages of each technology, we will consider the most appropriate one for every segment of food analysis.
基金On-Campus Practical Teaching Base of Guangdong Ocean University(On-Campus Practical Training Base of Food Major,Project number:310210062204)Teaching Quality and Teaching Reform Project Construction Project of 2021 Guangdong Undergraduate Universities(Green Processing Industry College for Lingnan Specialty Fruits and Vegetables,Project number:310121062201)Teaching Quality and Teaching Reform Project Construction Project of 2022 Guangdong Undergraduate Universities(Guangdong Ocean University-Xizhilang Science and Technology Integration Practice Teaching Base,Project number:310117062201)。
文摘With the development of society,the overall development of various industries in our country is unprecedentedly prosperous.However,various damaging industries with the sole goal of profit have emerged,significantly reducing people’s experience in basic needs such as food,clothing,housing,and transportation.Food analysis course is an essential primary subject established by colleges and universities to cultivate food quality and safety talents.In order to further ensure the food safety of society,this article mainly analyzes the teaching reform path of food analysis courses under the new situation.We hope the views in this article can provide guidelines for relevant workers.
基金supported by the National Science and Technology Council(NSTC)projects,Taiwan(Ref.No.112-2222-E-992-005,109-2222-E-992-002,111-2320-B-992-001-MY3).
文摘The demand for more effective,precise,and ecologically friendly ways to identify and measure different components within food matrices has driven ongoing changes in the field of food analysis.Efficient utilization of magnetic deep eutectic solvents(MDES)and DES-functionalized nanomaterials in food analysis holds significant potential in achieving optimal extraction efficiency,selectivity,and sensitivity for the extraction and detection of target food analytes.This review presents a comprehensive discussion of the structure,synthesis,and unique physicochemical properties of MDES and DES-functionalized nanomaterials as probable alternatives to toxic solvents used in the current food analysis practices.The MDES and functionalized nanomaterials find application in the determination of organic and inorganic contaminants,drugs,proteins,and other substances in environmental,food,and biological matrices.They are used as sorbents or solvents in extraction techniques,with high efficiency and analyte selectivity.The advancements in analytical extraction methods using MDES and DESfunctionalized nanomaterials are briefly discussed,with a focus on the latest reported studies.The molecular interactions involved are mainly due to the functionalization capacity of DES through the enhancement of the functional groups on the nanomaterial surface while maintaining structure integrity.Moreover,the environmental impacts,advantages,and disadvantages of MDES and DES-functionalized nanomaterials applied in food analysis are also summarized to highlight the loopholes for future development and improvements.
基金supported by the National Natural Science Foundation of China (Nos. 81925019, 81801817 and U22A20333)the National Key Research and Development Program of China (Nos. 2023YFB3810000 and 2023YFB3810003)+1 种基金the Fundamental Research Funds for the Central Universities and the Fujian Basic Research Foundation (Nos. 2022J011403, 2023XAKJ0101009, B2302014 and 2020Y4003)the Program for New Century Excellent Talents in University, China (No. NCET-13-0502).
文摘Fluorescent probes have wide applications in biological and environmental analysis due to their advantages of simple operation, convenient flexibility, high sensitivity and efficiency. They are considered to be promising tools for accurate analysis of agriculture- and food-related hazardous substances. In this review, the types and characteristics of the near-infrared fluorescence probes (NIFPs) are briefly described. The recent advances of NIFPs for precisely detecting various hazardous substances including heavy metals, sulfite and related sulfiting agents and hydrogen peroxide are summarized. Finally, the present challenges and future perspectives faced by NIFPs in food safety analysis are discussed.
基金funded by the National Nature Science of Foundation of China(No.81172675)the National Key Basic Research Program of China(No.2012CB720804)
文摘Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhoushan Archipelago, China. Concentrations of n-3 long-chain polyunsaturated fatty acids, methyl mercury （MeHg）, and dioxin-like compounds （DLCs） in the samples were analyzed for benefit risk assessment based on BRAFO-tiered approach. Results Based on the BRAFO-tiered approach, reference scenario （no intake） and alternative scenario （intake of specific species of 200 g/week） were determined. The exposure to MeHg/DLCs via alternative scenario of all studied species did not exceed provisional tolerable weekly/monthly intake. However, the adult population with high DLCs exposure in China would significantly exceed the upper limit of DLCs via an additional alternative scenario of some species such as Auxis thazard. The results of deterministic computation showed that alternative scenario of all studied species generated clear net beneficial effects on death prevention and child IQ gain. Conclusion The alternative scenario of all studied species could be recommended to population with average DLCs exposure, and the reference scenario of species with relatively high DLCs concentration could be recommended to population exposed to high DLCs.
文摘This study was to analyze the risk of sulfites in food consumed by the Chinese people and assess the health protection capability of maximum-permitted level （MPL） of sulfites in GB 2760-2011. Sulfites as food additives are overused or abused in many food categories. When the MPL in GB 2760-2011 was used as sulfites content in food, the intake of sulfites in most surveyed populations was lower than the acceptable daily intake （ADI）. Excess intake of sulfites was found in all the surveyed groups when a high percentile of sulfites in food was intaken. Moreover, children aged 1-6 years are at a high risk to intake excess sulfites. The primary cause for the excess intake of sulfites in Chinese people is the overuse and abuse of sulfites by the food industry. The current MPL of sulfites in GB 2760-2011 protects the health of most populations.
文摘The Brazilian Ministry of Health recommends that by 8 months of age, children should eat the same types of foods consumed by the other members of the family. Thus, this study sought to evaluate whether the nutritional composition of meals specially prepared (SM) for children aged 7 to 18 months in low-income families was superior to that of meals adapted (AM) from the family’s table foods. Protein, fat, carbohydrate, energy, dietary fiber, iron, sodium and sodium chloride values, were determined by chemical analyses and compared to dietetic guidelines. The infants’ hemoglobin levels were also investigated. In total, sixty samples of the infants’ lunch meal (51 AM and 9 SM) were taken for during a home visit. The values of protein, fat, carbohydrate, dietary fiber and energy of the AM were significantly lower, while the sodium and sodium chloride values were significantly higher, compared to those of the SM. The AM also contained significantly more water. No differences were seen with regard to iron values. Sodium chloride amounted for most of the sodium content. Neither the SM nor AM was adequate in terms of iron and sodium. All SM were adequate for protein and fat, whereas AM showed significantly more samples with inadequate energy levels. SM fell within the Acceptable Macronutrient Distribution Range, while AM fell below the lower value for fat and slightly above the upper value for carbohydrate. The prevalence of anemia was 60% in the study population (36/60). In conclusion, meals adapted from the family’s table foods showed a lower nutrient density and a less balanced macronutrient range when compared to meals specially prepared for infants. The main nutritional shortcomings, for both AM and SM, were the extremely low content of iron and the high content of sodium.
文摘Large-scale data emerge in food safety inspection and testing industry with the development of Internet technology in China.This paper was aimed at designing toxic and hazardous substance big data risk analysis algorithm in food safety inspection and testing based on cloud computing^([1]).Cloud computing platform was set up to store the massive extensive data with geographical distribution,dynamic and high complexity from the Internet,and MapReduce^([2]) computational framework in cloud computing was applied to process and compute parallel data.The risk analysis results were obtained by analyzing 1000000 meat products testing data collected from the laboratory management information system based on web.The results show that food safety index IFS < 1,which proves that the food safety state is in good condition.
基金supported by the Modern Agro-industry Technology Research System(CARS-45-KXJ19)the Agricultural Science and Technology Innovation Program from the Ministry of Agriculture of the People’s Republic of China(CAAS-ASTIP-2019-IAR)。
文摘Terpenoids,as crucial plant secondary metabolites in honey,possess various bioactivities.This study aimed at investigating terpenoids of longan,litchi,and schefflera honey.Our results reveal that these three species of honey are characterized by abundant terpenoids,with eight terpenoids and one phenylpropanoid identified.Callunene,3,4,5-trimethoxyphenylpropanal,schefflerin(4-2'-(3',4'-dihydroxy-5'-methylfuran)-3,5,5-trimethyl-2-cyclohexenone)or abscisic acids may be as the characteristic components of longan,litchi,or schefflera honey.Abscisic acids were the most abundant components,average contents reached up to 53.67,96.89 and 21.11 mg/kg,respectively,and the content ranges in three types of honey were 13.75-85.40,19.93-177.31,14.69-28.38 mg/kg,respectively.To our knowledge,the presence of schefflerin,(6R,9S)-vomifoliol,and 3,4,5-trimethoxyphenylpropanal in honey is a novel finding.We distinguish Thailand from Chinese mainland and Taiwan longan honeys,based on the ratio of abscisic acid and callunene content.Overall,our proposal to combine terpenoids with standard fingerprints seems to provide a novel and reliable solution for evaluating the authenticity of commercial honey.
基金financially supported by the National Natural Science Foundation of China(32360621,32160603,31760486)the Guizhou Provincial Basic Research Program(ZK[2021]Key Project 037)+2 种基金the Guizhou Provincial Key Technology R&D Program(QKHZC[2026]318)the Open Foundation of Key Laboratory of Wuliangye-flavor Liquor Solid-state Fermentation(2023JJ009)China National Light Industry。
文摘Glyphosate is widely used in agriculture,and its residues accumulate in soil and water,which adversely affects human health.The existing colorimetric methods for glyphosate detection are usually achieved by inhibiting the catalytic activity of natural enzymes or nanozymes,and often require the participation of easily decomposable H_(2)O_(2),leading to unstable detection capabilities or even false positive results.This article reports a smartphone-assisted sensor for colorimetric detection of glyphosate in several food samples based on enhancing the laccase-like activity of cubic Ag_(2)O nanoparticles.Glyphosate can significantly enhance the generation of radicals and electron transfer in cubic Ag_(2)O reaction solution,causing an obvious change in the color of the system,which can be easily distinguished by naked eye.The established sensor has excellent detection performance,with limit of detection as low as 2.09 μg/L,and it is highly selective to other competitive substances.The method of enhancing the enzyme-mimic activity of nanomaterials to detect glyphosate residues is proposed for the first time,which can avoid false positive results caused by traditional enzyme inhibition methods and complex food matrices.Moreover,smartphones can simplify the conventional analysis procedure and achieve convenient on-site monitoring of glyphosate pesticides in food.
文摘Five minerals or dements, crude protein, lysine, methionine＋cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthoru （Hippophae rhamnoides ssp. sinensis） using the method of ＂food analysis＂. The decision values （δi） of seabuckthoru seeds, leaves and fruit residues rank in the fifth, sixth and ninth position among the 16 types of fodder. Seeds, leaves and fruit residues of seabuckthoru are suitable for livestock and poultry fodder. The weights of livestock and poultry are considerably increased after feeding with seabuckthoru. The development of seabuckthoru should have great potentials as food, pre-food and food additives for livestock and poultry in north China, Processing facilities should pay more attention to seabuckthoru food development methods and strategies and the seabuckthorn fodder industry should be promoted.
文摘Cold-pressed oils from six herb plant seeds and four woody plant seeds were analyzed and compared for their quality characteristics such as oil, crud protein, shell, and moisture content, fatty acid （FA） compositions and oxidation stability. Results showed that walnut kernel contained the greatest amount of seed oil and safflower seed contained the lowest. Safflower, pumpkin, hemp, camellia and peony seeds had high shell content, their kernel oil content significantly increased after shelling. These oils had significant differences （p〈0.01） in levels of fatty acids and the ratio of n-6：n-3 fatty acids. Camellia, safflower, and flax seed oil contained the highest oleic acid, linoleic acid, and a-linolenic acid respectively. Hemp seed oil was observed in a 3.53：1 ratio of n-6 and n-3 fatty acids. All these ten oils were obviously different in moisture and volatile content, acid value, peroxide value and induction period （IP） （p〈0.01）. IP of peony seed oil was lowest （0.94 h） and almond oil was the highest （14.10 h）. IP of oils negatively correlated with polyunsaturated fatty acids content ^=-0.664, p=0.036）. These studies of ten cold-pressed oils may provide better explanation for their potential health benefits and further developing their commercial value.
基金supported by the National Natural Science Foundation of China(32402214)Science and Technology Plan Joint Program of Liaoning Province(2025-MSLH-039)+1 种基金Open Foundation of State Key Laboratory of Marine Food Processing&Safety Control(SKL202309)Fundamental Research Funds for Talents Recruitment of Dalian Polytechnic University(LJBKY2024022).
文摘The extensive use of antibiotics in farming has led to their accumulation in animal-derived food products,posing human health risks.Electrochemical sensors offer advantages such as simplicity,cost-effectiveness,and high sensitivity for antibiotic residue monitoring.Herein,we developed an electrochemical sensor based on laserinduced graphene integrated with poly(3,4-ethylenedioxythiophene)and gold nanoparticles(AuNPs/PEDOT/LIG).This work introduces a rational integration of these three components for the simultaneous detection of chloramphenicol(CAP)and enrofloxacin(ENR)residues in food samples through the well-separated oxidation potentials,rather than through specific molecular recognition.Comprehensive characterization of AuNPs/PEDOT/LIG confirmed its successful fabrication,excellent conductivity,efficient charge transfer,and strong electrocatalytic activity.The electrochemical sensor exhibited exceptional performance within a linear range of 2 nM to 450μM and 2 nM to 400μM for CAP and ENR.Limits of detection were 1.38 nM and 1.14 nM,with limits of quantification of 4.60 nM and 3.80 nM for CAP and ENR,respectively.It demonstrated remarkable selectivity,reproducibility,repeatability,and was successfully applied to detect CAP and ENR residues in grass carp,beef,and pork,achieving recoveries of 91.70%to 101.90%with relative standard deviations below 5%.The electrode fabrication process is facile and low-cost,making it suitable for large-scale production.The sensor is suitable for ENR detection,while CAP monitoring is limited to research or less demanding settings.Given its stability profile,the sensor is best suited for single-use or short-term batch analyses for cost-effective screening.This platform offers a promising strategy for antibiotic screening in food.
文摘A study was carried out to quantitatively estimate the L-theanine content in 19 teas commercially available in the Kenyan market by High Performance Liquid Chromatography (HPLC). The test tea samples analyzed were green (n = 4), black (n = 8) and flavored (n = 7) teas from different origins viz., Kenya (n = 4), Uganda (n = 2), Tanzania (n = 5), Rwanda (n = 4), Cameroon (n = 1) and Sri-Lanka (n = 2) commercially available in the Kenyan market. The estimated Limit of Detection (LOD) of the current method was 0.01% L-theanine. The L-theanine content ranged from below the detection limit (<0.01% L-theanine) to 1.60% L-theanine on a dry weight (d.w) basis. Statistically significant differences (p < 0.05) were observed in the L-theanine contents of black, green and flavoured teas. Rwandan green tea contained the highest L-theanine content with 1.60% d.w. whereas six of the seven flavoured teas had very low theanine levels (<0.01%) that could not be quantified by the current method.
基金Supported by the Funds of the Scientific Research Foundation of Northeast Agricultural University(2010RCB53)
文摘The use of genetically modified organisms （GMOs） as food products becomes more and more widespread. The European Union has implemented a set of very strict procedures for the approval to grow, import and/or utilize GMOs as food or food ingredients. Thus, analytical methods for detection of GMOs are necessary in order to verify compliance with labelling requirements. There are few effective screening methods for processed GM （genetically modified） products. Three anti-herbicide genes （CP4- EPSPS, BAR and PAT） are common exogenous genes used in commercialized transgenic soybean, maize and rice, In the present study, a new SYBR Green qPCR screening method was developed to simultaneously detect the three exogenous anti-herbicide genes and one endogenous gene in a run. We tested seven samples of representative processed products （soya lecithin, soya protein powder, chocolate beverage, infant rice cereal, maize protein powder, maize starch, and maize jam） using the developed method, and amplicons of endogenous gene and transgenic fragments were obtained from all the processed products, and the sensitivity was 0.1%. These results indicated that SYBR Green qPCR screening method was appropriate for qualitative detection of transgenic soybean, maize and rice in processed products.
基金Funding Authority(STDF)for granting the research project(STDF-ID:33682)。
文摘There is an urgent need to provide a rapid and selective method to analyze food and water samples contaminated with Staphylococcus aureus since it is one of the most potential food and waterborne pathogens.Thus,a portable bio-sensing system and disposable bacterial-sensor chips consisted of anti-S.aureus@MPA/Au NPs-Cu-MOF@SPE were designed,fabricated,and applied for 20-min-based analysis of food and water samples.In this regard,screen-printed electrodes(SPEs)were functionalized with a new synthesized copper-metal organic framework(Cu-MOF)conjugated with gold nanoparticles(Au NPs)to eff ectively promote the chemical immobilization of the bio-receptor(anti-S.aureus antibody)onto the sensor matrix using the mercaptopropionic acid(MPA)as a chemical cross-linker.Subsequently,parameters aff ecting the bacterial-sensing effi-cacy were studied and optimized.Accordingly,high sensitivity was obtained with a wide dynamic linear range from 1×10 to 1×10^(7)colony forming units per milliliter(CFU/m L)with correlation coefficient(R^(2))of 0.990,limit of detection and limit of quantification of 0.132 CFU/m L,and 0.440 CFU/m L,respectively.High selectivity was provided since no electrochemical signals were obtained from various non-targeting strains of common pathogens,including the Pseudomonas aeruginosa,Escherichia coli,Salmonella enterica,Streptococcus mutans,and Enterococcus faecalis.Eventually,the newly developed handheld bacterial-sensing platform was applied for the rapid analysis of S.aureus in food and water samples.
基金partly funded by the National Natural Science Foundation of China(32372423&32302190)the S&T Plan Project of Jiangsu Provincial(BE2022324).
文摘In this study,a simple enzyme-free co-system signal amplification method was proposed for the ultra-sensitive fluorescent detection of AFB1 in peanut samples.The sensing system cleverly combines Mg^(2+)dependent DNAzyme(MNAzyme)cleavage with co-system reactions.The prepared mixed solution was supplemented with AFB1 and signal molecules to facilitate specific binding of the target with the aptamer(Apt).Apt and competing chain cDNA complexes were dissociated,releasing cDNA which subsequently hybridized with complementary chain HDNA to activate the catalytic activity of MNAzyme.Subsequently,cleavage of fluorescent signal substrate F-DNA occurred,resulting in amplification of the fluorescent signal.Under optimal conditions,the fluorescent intensity is linearly correlated with the logarithm of the target AFB1 concentration in a dynamic range of 3 orders of magnitude from 0.1 ng mL^(-1) to 500 ng mL^(-1).The method has high selectivity for AFB1,and the detection limit is 0.083 ng mL^(-1).The recovery of the aptasensor was tested in peanut samples,and the recovery of the aptasensor was between 93.8 and 108%,which proved its practical application value in food safety field.
文摘Computing the food component(nutrient)amount in 100 kilocalories,100 grams or 100 milliliters,the reference amount customarily consumed(RACC),or 50 grams of food demonstrates the food component amount of some foods unsuitably.So,selecting some foods based on them may elevate the hazards of some chronic diseases.Computing the food component amount and assessing suitable levels of food components and the nutritional quality according to the Codex Alimentarius Commission(CAC),the United States Food and Drug Administration(FDA),and the suggested procedure were implemented on 8,596 food cases,29 food components,and 25 food categories.Selecting some foods under the FDA and CAC to reach sufficient intakes of positive food components surpassed energy demands.Selecting some foods under the CAC did not satisfy the demands of positive food components.Some foods that satisfied the demands of positive food components were not suitable food selections under the CAC.Selecting some foods under the FDA or CAC surpassed the demands of negative food components(including cholesterol,energy,fat,saturated fat,and sodium).Some foods that did not surpass the demands of negative food components were not suitable food selections under the CAC or FDA.Due to the vulnerabilities of selecting foods on the basis of the reference amounts of food,fast foods under the CAC and FDA in serving size(the serving size or serving is obtained from the RACC),spices and herbs under the CAC in 100 grams or 100 milliliters,and vegetables and vegetable products under the CAC in 100 kilocalories obtained the highest average scores for nutritional quality based on positive food components(including vitamins,protein,dietary fiber,and minerals,excluding sodium)among food categories for children aged four years and older and adults.
基金supported by the National Natural Science Foundation of China under Grant Nos.61832016,61672520CASIA-Tencent Youtu joint research project。
文摘Distinguishing aesthetically pleasing food photos from others is an important visual analysis task for social media and ranking systems related to food.Nevertheless,aesthetic assessment of food images remains a challenging and relatively unexplored task,largely due to the lack of related food image datasets and practical knowledge.Thus,we present the Gourmet Photography Dataset(GPD),the first largescale dataset for aesthetic assessment of food photos.It contains 24,000 images with corresponding binary aesthetic labels,covering a large variety of foods and scenes.We also provide a non-stationary regularization method to combat over-fitting and enhance the ability of tuned models to generalize.Quantitative results from extensive experiments,including a generalization ability test,verify that neural networks trained on the GPD achieve comparable performance to human experts on the task of aesthetic assessment.We reveal several valuable findings to support further research and applications related to visual aesthetic analysis of food images.To encourage further research,we have made the GPD publicly available at https://github.com/Openning07/GPA.
