绵羊皮两步法脱脂的工艺优化  

The Optimization of Sheepskin Two-steps Degreasing Process

作　　者：王建宇[1] 刘萌[1] 但年华[1] 王祎 刘传江 刘兰[1] 但卫华[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065 [2]际华三五一二皮革服装有限公司,甘肃兰州730046

出　　处：《皮革科学与工程》2012年第3期32-36,共5页Leather Science and Engineering

基　　金：成都市科技计划项目(11DXYB210JH)

摘　　要：介绍了绵羊皮两步法脱脂工艺的优化。通过对脱脂前后皮样油脂含量检测和组织切片染色观察等的分析,得到第一步脱脂的最佳工艺条件为:碱性脂肪酶浓度15 u/mL,温度43℃,pH 10.0,时间120 min,采用此工艺,脱脂率达32%左右;第二步脱脂的最佳工艺条件为:脱脂剂FG-B浓度4 g/L,温度43℃,pH10.0,时间120 min,采用此工艺,累计脱脂率达到58.9%。组织学观察结果表明,碱性脂肪酶可以分解脂腺中的脂肪,使绵羊皮乳头层产生一些空腔和腺体管道,有利于进一步脱脂,减少脱脂剂的使用。The optimization of two-steps degreasing process was introduced.Via comparing the grease content and observing dyed histological section of the samples before and after degreasing,the optimum conditions of first degreasing process is： concentration of alkaline lipase with 15 u/mL,temperature 43 ℃,pH10.0,time 120 min,degreasing ratio reaching approximately 32% in this stage.The optimum conditions of second degreasing process is： concentration of degreasing agent FG-B with 4 g/L,temperature 43 ℃,pH10.0,time 120 min,achieving degreasing ratio 58.9% around in this stage.The histological observation revealed that the fat of sebaceous gland could be decomposition by alkaline lipase and resulting in some cavities and gland channels in papillary layer of sheepskin,which is of great advantages to further degreasing and reduce the dosage of degreasing agents.

关 键 词：绵羊皮 两步法 脱脂 工艺优化 

分 类 号：TS551[轻工技术与工程—皮革化学与工程]