Page 134 - 《精细化工》2020年第12期

第 37 卷第 12 期 精 细 化 工 Vol.37, No.12
2020 年 12 月 FINE CHEMICALS Dec. 2020

功能材料
Ag NPs 改性鱼鳞明胶-琼脂复合膜的制备及性能

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张金丽 1,3 ，陈子和 ，陈燕婷 ，任中阳 ，翁武银 ，李清彪 2,3
（1. 集美大学 港口与环境工程学院，福建 厦门 361021；2. 集美大学 食品与生物工程学院，福建 厦
门 361021；3. 福建省食品微生物与酶工程重点实验室，福建 厦门 361021）
摘要：以罗非鱼鱼鳞明胶（简称为鱼鳞明胶）作为还原剂和稳定剂制备了银纳米颗粒（Ag NPs），将 Ag NPs
与鱼鳞明胶水溶液和琼脂水溶液混合，制备了银含量为 0.04%~0.19%（以鱼鳞明胶和琼脂的总质量为基准，下
同）的鱼鳞明胶-琼脂-Ag NPs 复合膜。采用 UV-Vis、TEM 和 XRD 对合成的 Ag NPs 进行了表征，并考察了银
含量对复合膜理化和抗菌性能的影响。结果表明，制得的 Ag NPs 为球形形貌，平均粒径为(9.3±1.8) nm。随着
银含量的增加，鱼鳞明胶-琼脂复合膜的色泽逐渐变深，透明度下降。复合膜的断裂伸长率、水蒸气阻隔性能和
耐水性能随银含量的增加显著增强，而厚度和抗拉强度却无明显变化。FTIR 和热重分析结果表明，Ag NPs 与
膜基质间存在化学相互作用，并在一定程度上改善了复合膜的热稳定性。抑菌环实验结果显示，复合膜可以在
较低的银含量（0.04%~0.19%）下实现良好的抗菌效果。
关键词：鱼鳞明胶；银纳米颗粒；复合膜；抗菌性能；食品包装；功能材料
中图分类号：O636.1 文献标识码：A 文章编号：1003-5214 (2020) 12-2496-09

Preparation and properties of nanoparticles modified fish

scale gelatin-agar composite films silver

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ZHANG Jinli , CHEN Zihe , CHEN Yanting , REN Zhongyang , WENG Wuyin , LI Qingbiao
（1. College of Harbour and Environmental Engineering, Jimei University, Xiamen 361021, Fujian, China; 2. College of
Food and Biological Engineering, Jimei University, Xiamen 361021, Fujian, China; 3. Fujian Provincial Key Laboratory
of Food Microbiology and Enzyme Engineering, Xiamen 361021, Fujian, China）
Abstract: Tilapia fish scale gelatin (shortened to fish scale gelatin), as reducing agent and stabilizer was
used to prepare silver nanoparticles (Ag NPs). The obtained Ag NPs were mixed with fish scale gelatin
aqueous solution and agar aqueous solution to prepare fish scale gelatin-agar composite films with silver
content 0.04%~0.19% (based on the total mass of fish scale gelation and agar, the same below). Ag NPs
were characterized by UV-Vis, TEM and XRD. The effect of silver content on the physicochemical and
antibacterial properties of gelatin-agar composite films was investigated. The results showed that Ag NPs
were spherical and homogeneous with an average particle size of (9.3±1.8) nm. With the increase of silver
content, the color of fish scale gelatin-agar composite film deepened and the transparency decreased. While
the elongation at break, water-resistance and water vapor barrier properties significantly enhanced, the
thickness and tensile strength had no obvious changes. FTIR and TG results indicated that there was
chemical interaction between Ag NPs and film matrix, which results in the improvement of thermal stability
of the composite film to some extent. Furthermore, the composite films could achieve good antibacterial
effect at low silver contents (0.04%~0.19%).
Key words: fish scale gelatin; silver nanoparticles; composite film; antibacterial properties; food packaging;
functional materials

收稿日期：2020-11-30; 定用日期：2020-12-04; DOI: 10.13550/j.jxhg.20201112
基金项目：国家自然科学基金（41976124）；福建省科技计划引导性项目（2018Y0064）；厦门市科技计划项目（3502Z20173029）
作者简介：张金丽（1969—），女，副教授，E-mail: jlzhang@jmu.edu.cn。