Marine organisms are an important source of bioactive compounds,among which marine carotenoids have garnered attention for their health benefits.Hundreds of carotenoids are extracted from different natural biomass;amo...Marine organisms are an important source of bioactive compounds,among which marine carotenoids have garnered attention for their health benefits.Hundreds of carotenoids are extracted from different natural biomass;among them marine carotenoids always have special appeal due to their unique properties.This review discusses recent literature on marine carotenoids,extraction and stabilization methods,and their applications in various industries.Green extraction techniques that use supercritical carbon dioxide(SC-CO_(2))and natural deep eutectic solvents were highlighted in addition to conventional extraction solvents.As most natural carotenoids are highly unstable,this review describes recent advances to stabilize these bioactive compounds.This work offers new insights into marine carotenoids and their potential application in the food,pharmaceutical,and cosmetic industries.展开更多
Incorporating natural antimicrobial agents,such as plant extracts obtained using organic solvents,may pose some toxicity risks in packaging films.Therefore,Betel leaves(Piper betle)hydrolysates(BH)were obtained throug...Incorporating natural antimicrobial agents,such as plant extracts obtained using organic solvents,may pose some toxicity risks in packaging films.Therefore,Betel leaves(Piper betle)hydrolysates(BH)were obtained through subcritical water treatment at temperatures ranging from 150℃ to 210℃ and 3 MPa for 20 min.The total phenolic compounds(TPC),and total flavonoid compounds(TFC)ranged from 120.10±1.96 to 184.99±3.55 mg GAE/g powder and 32.10±4.96 to 56.50±0.72 mg RE/g powder,respectively.BH also showed excellent inhibitory effects against Gram-positive bacteria(Bacillus cereus and Staphylococcus aureus)and Gramnegative bacteria(Salmonella enterica and Escherichia coli).Packaging films were then fabricated using chitosan with varying concentrations of freeze-dried BH(5 wt%-20 wt%).The tensile strength decreased with increasing BH levels,while surface hydrophobicity and thermal properties increased.Although the films maintained a good microstructure and high tensile strength with up to 10%BH incorporation,15%BH-enriched films appear to be the ideal concentration for food safety and packaging applications,given their superior antioxidant activity and tensile strength.Films with BH demonstrated extended shelf life for yellow corvina fish,as evidenced by total volatile basic nitrogen(TVB-N)and total plate count(TPC)measurements.The preservation capacity of the chitosan-based films is attributed to their effective antimicrobial properties,ability to retard lipid oxidation,and inhibition of spoilage bacteria growth.These films,incorporating betel leaf phenolic extract,hold potential for commercial use as active packaging for seafood preservation.展开更多
基金supported by the Korea Institute of Marine Science&Technology Promotion(KIMST)funded by the Ministry of Oceans and Fisheries(RS-2018-KS181195).
文摘Marine organisms are an important source of bioactive compounds,among which marine carotenoids have garnered attention for their health benefits.Hundreds of carotenoids are extracted from different natural biomass;among them marine carotenoids always have special appeal due to their unique properties.This review discusses recent literature on marine carotenoids,extraction and stabilization methods,and their applications in various industries.Green extraction techniques that use supercritical carbon dioxide(SC-CO_(2))and natural deep eutectic solvents were highlighted in addition to conventional extraction solvents.As most natural carotenoids are highly unstable,this review describes recent advances to stabilize these bioactive compounds.This work offers new insights into marine carotenoids and their potential application in the food,pharmaceutical,and cosmetic industries.
基金supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(2023R1A2C1005569).
文摘Incorporating natural antimicrobial agents,such as plant extracts obtained using organic solvents,may pose some toxicity risks in packaging films.Therefore,Betel leaves(Piper betle)hydrolysates(BH)were obtained through subcritical water treatment at temperatures ranging from 150℃ to 210℃ and 3 MPa for 20 min.The total phenolic compounds(TPC),and total flavonoid compounds(TFC)ranged from 120.10±1.96 to 184.99±3.55 mg GAE/g powder and 32.10±4.96 to 56.50±0.72 mg RE/g powder,respectively.BH also showed excellent inhibitory effects against Gram-positive bacteria(Bacillus cereus and Staphylococcus aureus)and Gramnegative bacteria(Salmonella enterica and Escherichia coli).Packaging films were then fabricated using chitosan with varying concentrations of freeze-dried BH(5 wt%-20 wt%).The tensile strength decreased with increasing BH levels,while surface hydrophobicity and thermal properties increased.Although the films maintained a good microstructure and high tensile strength with up to 10%BH incorporation,15%BH-enriched films appear to be the ideal concentration for food safety and packaging applications,given their superior antioxidant activity and tensile strength.Films with BH demonstrated extended shelf life for yellow corvina fish,as evidenced by total volatile basic nitrogen(TVB-N)and total plate count(TPC)measurements.The preservation capacity of the chitosan-based films is attributed to their effective antimicrobial properties,ability to retard lipid oxidation,and inhibition of spoilage bacteria growth.These films,incorporating betel leaf phenolic extract,hold potential for commercial use as active packaging for seafood preservation.
