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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Coating with chitosan-based edible films for mechanical/biological protection of strawberries
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Coating with chitosan-based edible films for mechanical/biological protection of strawberries

机译：用壳聚糖的可食用薄膜涂层，用于草莓的机械/生物保护

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摘要

The present work reports the development of chitosan-based films for application as protective layer for natural foods such as fruits and vegetables. Chitosan is a biopolymer known for its antibacterial and antifungal properties that when combined with its biocompatibility and biodegradability can be widely applied in areas such as cosmetic, pharmaceutical and food industry. In this work, thin films based on chitosan were obtained by the drop-casting method using glycerol to enhance elasticity and hydrophobic character. Such properties are desirable to form a protective layer that is not highly soluble in water. The results showed that the bactericidal character of chitosan against gram-positive and gram-negative bacteria remains after plasticization. Strawberries coated with chitosan/glycerol 30% films (Chi/30%Gly) showed resistance against gray fungus attack and an insignificant alteration in their flavor, appearance, aroma and texture. In other words, the chitosan film protected the strawberry from fungi attack, showing its great potential as edible coating for fruits and vegetables. (C) 2019 Elsevier B.V. All rights reserved.
机译：本工作报告了基于壳聚糖的薄膜的应用，作为果实和蔬菜等天然食物的保护层。壳聚糖是其抗菌和抗真菌性质已知的生物聚合物，当其生物相容性结合时，可以广泛应用于化妆品，制药和食品工业等领域的生物降解性。在这项工作中，通过使用甘油的滴浇铸方法获得基于壳聚糖的薄膜，以增强弹性和疏水性。这种性质是理想的，以形成不溶于水的保护层。结果表明，凝聚蛋白对克阳性和革兰氏阴性细菌的杀菌性质仍然存在塑化。涂有壳聚糖/甘油30％薄膜（CHI / 30％GLY）的草莓显示出对灰色真菌攻击的抗性，并在风味，外观，香气和质地上进行微不足道的变化。换句话说，壳聚糖薄膜保护了来自真菌攻击的草莓，表现出它作为水果和蔬菜的食用涂层的巨大潜力。 （c）2019 Elsevier B.v.保留所有权利。

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