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当前位置: 首页 > 文章 > 多酚氧化酶对蚕丝及丝蛋白生物材料的改性与应用研究进展 蚕业科学 2019 (1) 134-139
Position: Home > Articles > Modification of Silk Fibers and Silk-based Biomaterials by Polyphenol Oxidase and Its Application Science of Sericulture 2019 (1) 134-139

多酚氧化酶对蚕丝及丝蛋白生物材料的改性与应用研究进展

作  者：
周倩;王平;袁久刚;王强;范雪荣
单  位：
江南大学生态纺织教育部重点实验室
关键词：
多酚氧化酶;丝蛋白;酪氨酸残基;催化氧化;生物改性;应用
摘  要：
多酚氧化酶能催化氧化酚类结构生成醌类活性中间体,引发酚类单体之间聚合。家蚕丝素蛋白和丝胶蛋白大分子肽链上均含一定数量的酪氨酸残基,酪氨酸的酚羟基能被多酚氧化酶催化氧化,生成醌类活性基,不仅可促成丝蛋白大分子交联,而且可与外源氨基功能化合物发生迈克尔加成或席夫碱反应,实现底物分子改造。本文讨论了多酚氧化酶的催化氧化机制,侧重阐述了近年来国内外应用多酚氧化酶(漆酶和酪氨酸酶)进行丝蛋白生物材料加工的研究,包括丝纤维制品酶法抗菌和防皱整理、丝素或丝胶酶促交联与接枝改性、再生丝蛋白膜及功能性生物材料制备等,为蚕丝及丝蛋白基材料的生物改性研究及开发利用提供参考。
译  名：
Modification of Silk Fibers and Silk-based Biomaterials by Polyphenol Oxidase and Its Application
作  者：
Zhou Qian;Wang Ping;Yuan Jiugang;Wang Qiang;Fan Xuerong;Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University;
单  位：
Zhou Qian%Wang Ping%Yuan Jiugang%Wang Qiang%Fan Xuerong%Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University
关键词：
Polyphenol oxidase;;Silk protein;;Tyrosine residue;;Catalytic oxidation;;Bio-modification;;Application
摘  要：
Polyphenol oxidase(PPO) can catalyze the oxidation of phenolic groups to form reactive quinone intermediates, and initiate the polymerization of the phenolic monomers. The macromolecular peptide chains in silk fibroin and sericin contain a certain number of tyrosine residues, whose phenolic hydroxyl group can be oxidized by polyphenol oxidase to produce quinone groups. These active groups might result in self-crosslinking of the macromolecules of silk proteins, and react with the amino functional compounds simultaneously to transform substrate molecule via Michael addition reaction or Schiff base reactions. In this paper, the catalytic oxidation mechanisms of polyphenol oxidases were discussed, meanwhile, researches at home and abroad on the processing of silk-based biomaterials with polyphenol oxidases(laccase and tyrosinase) were introduced, including enzymatic anti-microbial finishing and anti-crease finishing of silk textiles, enzymatic crosslinking and grafting of silk fibroin and sericin proteins, preparation of regenerated silk protein films and functional biomaterials. These studies will facilitate the study on bio-modification of silk fibers and silk-based materials and their future utilization.

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