A protective coating can aid in reducing mechanical harm to food during harvesting,handling,and trans-portation,resulting in fewer bruises,wounds,and other injuries,thereby improving the overall quality of the produce...A protective coating can aid in reducing mechanical harm to food during harvesting,handling,and trans-portation,resulting in fewer bruises,wounds,and other injuries,thereby improving the overall quality of the produce.In this study,coatings with 1%(w/v)chitosan(CS)and 0.6%(w/v)diepoxy-polyethylene glycol(PEG)were prepared by the co-blending method.According to the findings,increasing the PEG concentration enhanced the moisture content,water vapor permeability,and contact angle properties.In addition,when viewed by scanning electron microscopy(SEM),the morphology of the films containing more PEG appeared rougher and denser.In addition,at room temperature,the freshness of‘Nanguo’pears and the antifungal efficacy of the coating against Penicillium italicum(P.italicum)and Botrytis cinerea(B.cinerea)were evaluated.According to the findings,the weight loss or total soluble solids of pears coated with CS or PEG did not differ significantly during storage.The fruit respiration rate and ascorbic acid(AA)and malondialdehyde(MDA)contents were maintained after coating CS insertion with PEG.The CS-PEG composite coating successfully inhibits the growth of P.italicum and B.cinerea(P.italicum>B.cinerea),according to an in vitro antifungal activity assay that was improved by adding PEG.According to principal component analysis(PCA)results,the CS-PEG coating significantly impacts pear sensory evaluation and firmness.At room temperature,the shelf life of pears with a CS-PEG coat has been extended from 15 days to 25 days.展开更多
基金The outstanding youth science fund project of Inner Mongolia agri-cultural university(2017XQG-4)The Excellent Youth Training program of the College of Food Science and Engineering of Inner Mongolia Agricultural University(SPYQ202101)+2 种基金Young innovative talent of grassland talent project of Inner Mongolia(2020)Talent Develop-ment Fund of Inner Mongolia Autonomous Region(2021)China Scholarship Council launched a scholarship program(2019),China.
文摘A protective coating can aid in reducing mechanical harm to food during harvesting,handling,and trans-portation,resulting in fewer bruises,wounds,and other injuries,thereby improving the overall quality of the produce.In this study,coatings with 1%(w/v)chitosan(CS)and 0.6%(w/v)diepoxy-polyethylene glycol(PEG)were prepared by the co-blending method.According to the findings,increasing the PEG concentration enhanced the moisture content,water vapor permeability,and contact angle properties.In addition,when viewed by scanning electron microscopy(SEM),the morphology of the films containing more PEG appeared rougher and denser.In addition,at room temperature,the freshness of‘Nanguo’pears and the antifungal efficacy of the coating against Penicillium italicum(P.italicum)and Botrytis cinerea(B.cinerea)were evaluated.According to the findings,the weight loss or total soluble solids of pears coated with CS or PEG did not differ significantly during storage.The fruit respiration rate and ascorbic acid(AA)and malondialdehyde(MDA)contents were maintained after coating CS insertion with PEG.The CS-PEG composite coating successfully inhibits the growth of P.italicum and B.cinerea(P.italicum>B.cinerea),according to an in vitro antifungal activity assay that was improved by adding PEG.According to principal component analysis(PCA)results,the CS-PEG coating significantly impacts pear sensory evaluation and firmness.At room temperature,the shelf life of pears with a CS-PEG coat has been extended from 15 days to 25 days.
