Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Ctra. de Utrera km. 1, Pablo de Olavide University Campus, Building 46, 41013 Seville, Spain.
Carbohydr Polym. 2017 Dec 15;178:368-377. doi: 10.1016/j.carbpol.2017.09.042. Epub 2017 Sep 14.
This study describes the development of a composite edible film based on pectin and fish skin protein capable of protecting food from microbial attack and oxidative degradation. The film was prepared with glycerol as plasticizer and the antioxidant and antimicrobial phenolic compounds hydroxytyrosol (HT) and 3,4-dihydroxyphenylglycol (DHPG), extracted from olive fruit, as active agents. The influence of the concentration of plasticizer and active HT/DHPG on the mechanical and functional properties of the films was investigated, with values of water vapor permeability (WVP) between 0.13-0.22gmm/hmkPa and oxygen permeability (OP) between 9.91-40.76cmμm/mdkPa. The release behavior in water at different pH values was also evaluated. The antimicrobial capacity of the novel food coating was tested on strawberries, a fruit with high perishability. The bioactive edible film containing HT/DHPG preserved the strawberries against mold during storage with a significant delay in visible decay.
本研究开发了一种基于果胶和鱼皮蛋白的复合可食用膜，能够保护食品免受微生物攻击和氧化降解。该膜以甘油为增塑剂，以橄榄果中提取的抗氧化和抗菌酚类化合物羟基酪醇（HT）和 3,4-二羟基苯乙二醇（DHPG）为活性物质。研究了增塑剂和活性 HT/DHPG 浓度对薄膜机械和功能特性的影响，水蒸气透过率（WVP）在 0.13-0.22gmm/hmkPa 之间，氧气透过率（OP）在 9.91-40.76cmμm/mdkPa 之间。还评估了在不同 pH 值下的释放行为。新型食品涂层的抗菌能力在草莓上进行了测试，草莓是一种易腐水果。含有 HT/DHPG 的生物活性可食用膜在储存过程中能够防止草莓发霉，显著延缓了可见腐烂的发生。
