绿茶多酚对马铃薯淀粉壳聚糖复合膜影响研究

张小燕; 赵翔宇; 国德贤; 彭勇

doi:10.13386/j.issn1002-0306.2017.15.043

绿茶多酚对马铃薯淀粉壳聚糖复合膜影响研究

山东农业大学食品科学与工程学院

基金项目:

山东农业大学青年科技创新基金(055-24037)；中国博士后科学基金面上资助(2016M592228)；

详细信息

作者简介:
张小燕 (1983-) , 女, 博士, 讲师, 研究方向:食品功能性成分研究, E-mail:06zhangxiaoyan@163.com。;

彭勇 (1980-) , 男, 博士, 讲师, 研究方向:食品贮藏保鲜, E-mail:pengyongxyz@sina.com。;

中图分类号: TS206.4
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出版历程
- 收稿日期: 2017-01-12

Effect of green tea polyphenols on properties of potato starch-chitosan composite film

College of Food Science and Engineering, Shandong Agricultural University

摘要

摘要: 为开发新型抗氧化活性包装材料,以马铃薯淀粉壳聚糖复合膜为基材,研究添加绿茶多酚对复合膜抗氧化能力、物理性能和化学结构影响。结果表明:添加绿茶多酚显著（p<0.05）提高了复合膜DPPH自由基清除能力,添加2%绿茶多酚的复合膜在3 min内自由基清除率达到94.48%,绿茶多酚添加也显著（p<0.05）地增强了复合膜的阻湿性。但添加绿茶多酚增加了复合膜红色和黄色、水溶性,降低了膜的柔韧性,红外光谱显示添加绿茶多酚影响了-O-H键的弯曲和伸缩振动,干扰了复合膜体间的氢键相互作用。研究结果表明添加0.5%绿茶多酚既能提高复合膜的抗氧化能力,又可使复合膜拥有较好的柔韧性。
- 绿茶多酚 /
- 马铃薯淀粉 /
- 壳聚糖 /
- 活性包装膜 /
- 抗氧化
Abstract: In order to develop a new active antioxidant packaging material, the effects of green tea polyphenols ( GTP) on the physical, antioxidant and structural properties of the potato starch-chitosan based films were investigated. The results showed that DPPH radical scavenging rate of composite films were enhanced significantly with the addition of GTP, and DPPH radical scavenging rate achieved 94.48% with 2% GTP treatment in 3 min.The addition of green tea polyphenols also decreased water vapor permeability of composite films. However, green tea polyphenols increased the red and yellow color, water solubility, whereas caused the decrease of film flexibility. The changes in physical properties were attributed to the hydroxyl interaction between chitosan-starch and green tea polyphenols according to the FTIR.The results showed that the addition of 0.5% green tea polyphenols could not only improve the antioxidant quality of films, but also have better flexibility.
- green tea polyphenols /
- potato starch /
- chitosan /
- active packaging film /
- antioxidant

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