牦牛绒纤维的生物酶脱色工艺研究

Study on Biological Enzyme Decolorization Technology of Yak Wool Fiber

摘要: 采用木瓜蛋白酶、过氧化氢酶对牦牛绒纤维进行剥鳞和漂白脱色处理，通过正交实验法和综合平衡法，探究酶浓度、温度、时间对牦牛绒纤维脱色效果的影响。结果表明，最佳处理工艺为：过氧化氢酶浓度7.5% (o.w.f)、温度60℃、时间100 min、H2O2 4.2 mL，此时牦牛绒脱色后各方面的性能均比较好。与传统氧化–还原法对比，经过生物酶脱色处理后牦牛绒纤维的白度从0.2上升至4.2，断裂强力从20.12 cN减少至13.32 cN，重量损失率为5.01%，比传统氧化–还原法处理的强力高，手感柔软，白度略微低一些，但不影响后续生产加工。

Abstract: Papain and catalase were used to scale and bleach yak wool fiber, the effects of enzyme concentration, temperature and time on the bleach de-colorization of yak wool fiber were investigated by orthogonal experiment and comprehensive equi-librium method. The results showed that the optimum process was as follows: catalase concentra-tion 7.5% (o.w.f), temperature 60˚C, time 100 min, H2O2 4.2 mL, the performance of yak hair after decolorization was relatively better at present. Compared with the traditional oxidation-reduction method, the whiteness of yak wool fibers increased from 0.2 to 4.2 and the breaking strength de-creased from 20.12 cN to 13.32 cN after the enzymedecolorization treatment, with a weight loss ra-tio of 5.01%, which was higher than that of the traditional oxidation-reduction method treatment, with soft hands and slightly lower whiteness, but did not affect the subsequent production pro-cessing.