Natural Biomaterial-Based Edible and pH-Sensitive Films Combined with Electrochemical Writing for Intelligent Food Packaging
Natural Biomaterial-Based Edible and pH-Sensitive Films Combined with Electrochemical Writing for Intelligent Food Packaging
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基于天然生物材料的可食用和 pH 敏感薄膜结合电化学写入用于智能食品包装
DOI：
10.1021/acs.jafc.8b04932
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发表时间：
2018
影响因子：
6.1
通讯作者：
杨志坤
中科院分区：
文献类型：
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作者：
翟晓东;李志华;张俊俊;石吉勇;邹小波;黄晓玮;张迪;孙悦;杨志坤
以明胶、结冷胶和红萝卜花色苷提取物为主要原料，研制了一种可食性pH敏感型电化学写入智能食品包装膜。复合膜在pH 2-12范围内显示出橙子红色至黄色的颜色变化。膜的拉伸强度、延展性以及对紫外光和氧气的阻隔能力随着红萝卜花色苷浓度的增加而提高。利用电化学写入方法在薄膜上成功地绘制出了彩色图案。该复合膜作为气体传感器，在牛奶和鱼腐败的存在下呈现出可见的颜色变化，而书写的图案保存良好。因此，这种具有书写图案的复合膜可以是一种易于使用的指示剂，作为智能包装系统的一部分，具有监测食品腐败的巨大潜力。
An edible and pH-sensitive film combined with electrochemical writing was developed by using gelatin, gellan gum, and red radish anthocyanins extract for intelligent food packaging. The composite film showed an orange red-to-yellow color change in the pH range of 2–12. The tensile strength, ductility, and barrier abilities to ultraviolet (UV) light and oxygen of the films were improved as the concentration of red radish anthocyanins increased. Multicolor patterns were successfully drawn on the films by using the electrochemical writing method. The composite films, which acted as gas sensors, presented visible color changes in the presence of milk and fish spoilage, while the written patterns were well-preserved. Accordingly, this composite film with written patterns could be an easy-to-use indicator with great potential for monitoring food spoilage as a part of an intelligent packaging system.