Development and preparation of active starch films carrying tea polyphenol
Development and preparation of active starch films carrying tea polyphenol
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负载茶多酚活性淀粉膜的研制与制备
DOI：
10.1016/j.carbpol.2018.05.043
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发表时间：
2018-09-15
影响因子：
11.2
通讯作者：
Chen, Pei
中科院分区：
文献类型：
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作者：
Feng, Mingyue;Yu, Long;Chen, Pei
研究了添加茶多酚的淀粉膜在食品活性包装中的应用。系统评价了不同含量TP对淀粉膜结构、理化性质、抗氧化活性和抑菌活性的影响。结果表明，TP在淀粉基体中分散良好，对膜的表面性能和阻隔性能影响不大。TP的添加显著提高了玉米秸秆的抗氧化能力，同时也提高了玉米秸秆对S. aureus和e.杆菌然而，观察到薄膜的机械性能下降。此外，本文还提出了一种结合计算机视觉和机器学习算法的菌落自动计数方法，该方法具有速度快、无主观不确定性等优点。
Starch films incorporated with tea polyphenol (TP) were developed to produce active food packaging. The effect of the incorporation of TP with different content on the structure, physicochemical properties, antioxidant activity and antimicrobial activity of the starch films was systematically evaluated. Results showed that TP was well dispersed in the starch matrix, which induced a slight influence on the surface and barrier properties of the films. TP addition led to an important improvement in antioxidant capability, as well as inhibition efficiency against the microorganisms of S. aureus and E. coli. However, a decrease in mechanical properties of films was observed. Moreover, a new automatic counting method which combined the computer vision and machine learning algorithm was developed to identify and count the colonies, and the method performed much faster without subjective uncertainty.