Ultrasonic effect on the desizing efficiency of ¦Á-amylase on starch-sized cotton fabrics

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• 作者：Longyun Hao ; ^{hlyqdu@hotmail.com} ; Rui Wang ; Kuanjun Fang ; Jingquan Liu
• 关键词：¦Á-Amylase ; Enzymatic desizing ; Ultrasound ; Starch ; Cotton fabrics
• 刊名：Carbohydrate Polymers
• 出版年：2013
• 出版时间：25 July, 2013
• 年：2013
• 卷：96
• 期：2
• 页码：474-480
• 全文大小：1264 K

文摘

Enzymatic desizing by ¦Á-amylase and ultrasound irradiation are the two important clean technologies in the textile industry. In the present work, with the aim of giving a further insight to the influence of ultrasound on ¦Á-amylase activity and its desizing efficiency, the ultrasound-based experiments were afforded in two ways: (i) step-wise treatment of ¦Á-amylase by ultrasound and then enzymatic desizing, as well as; (ii) simultaneous utilization of ultrasound and ¦Á-amylase for the desizing. By the step-wise strategy, it is found that the ultrasound has negative impact on the ¦Á-amylase activity using soluble starch as substrate. However, the sonicated ¦Á-amylase possesses higher desizing efficiency because there are higher hydrophobic interactions between sonicated ¦Á-amylase protein and starch-sized cotton and thus intensifies its catalytic activity. By the simultaneous procedure, the enhancement to desizing efficiency is more pronounced than that by the step-wise procedure. This can be attributed to comprehensive actions of several reasons such as more effective stirring/mixing mechanism, damages or changes to substrate, more effective catalysis to hydrolytic reactions and faster removal of loosened products from the fabric bulk.