基于微波辐照的蓝湿革酶软化研究  

Research of Wet Blue Bating Based on Microwave Irradiation

作　　者：张金伟[1] 税科林 ZHANG Jinwei;SHUI Kelin(College of Biomass Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学轻工科学与工程学院,成都610065

出　　处：《实验科学与技术》2023年第5期17-22,共6页Experiment Science and Technology

基　　金：国家自然科学基金面上项目(21576171)。

摘　　要：经过鞣制的皮革具有优异的耐酶解性能,蓝湿革酶软化过程耗时较长。为了将微波辐照技术用于蓝湿革软化操作以提高生产效率,该文研究了不同加热方式对537酸性蛋白酶活力和酶促反应的影响,并分别以微波辐照和水浴加热为热源,通过考察软化废液组成、软化后皮坯粒面形貌和物理机械性能,研究微波辐照对蓝湿革软化的影响。实验结果表明,微波辐照对酶的活力和酶促反应速度有负面影响,但是会增加酶与底物的亲和力。在微波辐照下,蓝湿革软化过程中胶原蛋白水解量更少,铬释放量仅有水浴加热的45.54%,同时收缩温度、柔软度和抗张强度也有不同程度的提高。此外,微波辐照下完成软化的蓝湿革粒面更平细,毛孔更舒展。因此,在蓝湿革软化过程中使用微波辐照可以加快软化速度、提高软化效果,有望成为一种清洁、高效的制革加工手段。In order to apply microwave irradiation(MW)in the wet blue bating process,the influence of different heating methods on 537 acid protease enzyme activity and enzymatic reaction was investigated at first,and then the effect of MW on wet blue bating process was also studied through measuring the spent component,grain morphology and leather mechanical properties.The results showed that MW had a negative effect on enzyme activity and rate of enzymatic reaction but had a positive effect on the affinity between enzyme and substrate.In the wet blue bating process under MW,there was less collagen hydrolyzed and the content of chromium releasing was only 45.54%compared with water bath heating;in addition,the shrinkage temperature,softness and tensile strength were also improved.Moreover,the bated wet blue under MW had flatter grain and stretched pores.In short,microwave irradiation could not only accelerate the rate but also improve the effect of wet blue bating process.Therefore,it would be a fast and cleaner method for leather making.

关 键 词：微波辐照 537酸性蛋白酶 蓝湿革 软化 

分 类 号：TS541[轻工技术与工程—皮革化学与工程]