MTG酶催化ε-聚赖氨酸接枝羊毛抗菌整理

Grafting of ε-Polylysine on Wool with MTG for Antibacterial Finishing

利用新型生物交联剂微生物谷氨酰胺转氨酶(MTG酶),将具有抗菌作用的ε-聚赖氨酸(ε-PLL)通过生物催化交联的方式接枝到羊毛上,并采用振荡烧瓶法研究其抗菌性能.氨基酸分析表明,MTG接枝试样中赖氨酸的相对质量分数变化增加(19.27%)明显高于吸附样(13.13%).另外,通过扫描电子显微镜(SEM)对羊毛纤维表面形态的分析和对比不同处理后羊毛织物的染色性差异,证实MTG酶可以催化ε-PLL接枝到羊毛上.ε-PLL接枝后羊毛具有较好的抗菌性能.

A new type of biological cross-linker microbial transglutaminase （MTG） was used to catalyze the grafting of ε-polylysine （ε - PLL） onto the wooI fabrics and the antibacterial properties of grafted wool were determined by oscillation flask method. Amino acid analysis showed that the relative lysine mass percentage changes in MTG grafted sample （19.27%） was significantly higher than that of absorpted sample （13.13%）. It was demonstrated that ε- PLL could be MTG-catalyzedly grafted onto wool fibers in terms of amino acid analysis, SEM observation and dyeing difference of wool fabrics after different treatments. The results showed that grafted wool presented good antibacterial properties.