食品科学2026，Vol.47Issue(1)：258-268,11.DOI:10.7506/spkx1002-6630-20250803-001
牛至精油Pickering乳液/纳米纤维素/果胶抗菌涂层构建及其在芒果保鲜中的应用
Construction of Oregano Essential Oil Pickering Emulsion/Nanocellulose/Pectin Antimicrobial Coating and Its Application in Mango Preservation
摘要
Abstract
To improve the compatibility of hydrophilic polysaccharide substrates with oregano essential oil(OEO),an OEO Pickering emulsion stabilized by lauric acid-modified cellulose nanocrystals was prepared and incorporated into a cellulose nanofiber/pectin matrix to develop a mango preservation coating.The emulsion prepared at a 0.45:1 absolutely dry mass ratio between lauric acid and cellulose nanocrystals and a cellulose nanocrystal mass fraction of 1.5%showed uniform droplet size distribution and the emulsification index reached 93.7%after 48 h,reflecting good stability.The Pickering emulsion greatly affected the coating's microstructure,thereby regulating its barrier performance.The composite coating with 1.5%emulsion loading exhibited the best performance with an oxygen transmission rate of 13.25 cm3/(m2·d),a water vapor permeability of 2.59×10-13 g·cm/(cm2·s·Pa),a water contact angle of 76.03°,and 99.69%inhibition against Escherichia coli.In mango preservation trials,the coating reduced the respiratory peak by 14.41%,decreased the mass loss by 3.3%when compared with the control group on day 9 of storage,delayed the browning incidence and the reduction in firmness,and extended the shelf life by over 3 days.In conclusion,the modified cellulose nanocrystals-stabilized Pickering emulsion/nanocellulose/pectin composite coating shows enhanced gas/moisture barrier properties and antimicrobial activity,thereby maintaining postharvest mango quality.It provides an eco-friendly solution for fruit preservation.关键词
牛至精油/Pickering乳液/抗菌/复合涂层/芒果保鲜Key words
oregano essential oil/Pickering emulsion/antimicrobial/composite coating/mango preservation分类
通用工业技术引用本文复制引用
黎思婷,田红红,谢航宇,楼一二,欧阳远鑫,李丽,吴敏..牛至精油Pickering乳液/纳米纤维素/果胶抗菌涂层构建及其在芒果保鲜中的应用[J].食品科学,2026,47(1):258-268,11.基金项目
广西自然科学基金项目(2025GXNSFAA069347) （2025GXNSFAA069347）
广西重点研发计划项目(桂科农AB2506910021) （桂科农AB2506910021）
国家自然科学基金地区科学基金项目(22168006) （22168006）
