植鞣革酶软化研究  

Bating of vegetable tanned leather with acid protease

作　　者：简晓昀[1,2] 张金伟[1,2] 陈立建[1,2] 陈小云 肖烈忠 陈武勇[1,2] 

机构地区：[1]四川大学皮革化学与工程教育部重点实验室,四川成都610065 [2]四川大学制革清洁技术国家工程实验室,四川成都610065 [3]西藏自治区拉萨皮革有限责任公司,西藏拉萨850000

出　　处：《中国皮革》2015年第15期1-4,共4页China Leather

基　　金：西藏自治区科技计划项目(Z2014D81G3-2);教育部博士点基金(20130181130009)

摘　　要：为了使植鞣革适于生产轻革产品，研究采用不同用量的酸性蛋白酶在不同温度下对植鞣革进行软化，通过测定软化后植鞣革的物理机械性能、粒面平细度以及废液中的羟脯氨酸含量和色度色差值，评价软化效果。结果表明：酸性酶的最佳用量为植鞣革质量的0．8％，在此用量范围内，植鞣革的柔软度和粒面平细度有明显改善；在30～40℃范围内，温度越高，酶软化效果越明显。与此同时，煎用量越大，废液的羟脯氨酸含量以及色度色差值越高。综上，酸性蛋白晦可以在不明显影响植鞣革物理机械性能的前提下，明显改善植鞣革的柔软度和粒面平细度，将为植鞣革用于轻革生产提供一种新的方法。Vegetable tanned leather was bated with different dosages of acid protease in different temperatures. The bating effect was evaluated by mechanical properties, flatness of .leather, and the content of hydroxyproline and chromatic aberrationof wastewater when the bating was completed. The results show that the optimal dosage of acid protease is 0, 8% （based on the vege- table tanned leather）. The flatness and softness of leather are obviously improved within the dosage. The bating effect is improved with the increase of temperature （30 -40℃ ）. Furthermore, the hydroxyproline and chromatic aberration in spent liquorare also increased with the increase of temperature and the dosage of enzymel Therefore acid protease could improve the flatness and soft- ness of vegetable tanned leather obviously without significantly affecting the mechanical properties. The results could provide a new way for vegetable tanned leather used as light leather.

关 键 词：轻革 植鞣革 酸性蛋白酶 软化 物理机械性能 

分 类 号：TS529[轻工技术与工程—皮革化学与工程]