FOOD SCIENCE ›› 2022, Vol. 43 ›› Issue (12): 139-141.doi: 10.7506/spkx1002-6630-20210802-021

• Food Chemistry • Previous Articles    

Effect of Modification Methods of Cellulose Microfibrils on the Performance of Collagen Fiber Composite Films

JIAO Ting, ZHANG Wenhui, ZHANG Xue, ZHANG Haiyan, WANG Wenhang, ZHANG Hongjie   

  1. (1. School of Light Industry Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China; 2. China National Pulp and Paper Research Institute Co. Ltd., Beijing 100102, China; 3. College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin 300457, China)
  • Published:2022-07-01

Abstract: In this study, composite films were prepared with collagen fiber (CF) and cellulose microfibrils (CMF) with different degrees of carboxylation coated with metal-polyphenol network (MPN) in order to evaluate the influence of the modification methods of CMF on the properties of the composite films. The results showed that compared to CF-CMF films, the oxidation resistance of CF-CMF-MPN films was increased by 51.49%, and the elongation at break and light resistance were also improved significantly. CMF modified with MPN and high content of carboxymethyl groups could minimize the impact of MPN on the mechanical strength of composite films. CMF modified with MPN and high content of carboxyethyl groups could increase the water vapor and oxygen barrier performance by 1.30 and 3.48 times, respectively. Scanning electron microscopy and infrared spectroscopic analysis showed that different modified CMFs and collagen fibers physically cross-linked and had good compatibility with each other. In conclusion, this study has provided a new means to improve the performance of composite films for better applications in the field of food packaging.

Key words: collagen fiber composite film; cellulose microfibrils; metal-polyphenol network; carboxylation modification; food packaging

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