A cleaning and efficient approach to improve wet-blue sheepleather quality by enzymatic degreasing

JOURNAL OF CLEANER PRODUCTION

卷:148

Article

Lyu, Bin^1,2  Cheng, Kun¹  Ma, Jianzhong^1,2  Hou, Xueyan¹  Gao, Dangge¹  Gao, He¹  Zhang, Jing³  Qi, Yuliang⁴ 

[1] Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China

[2] Shaanxi Res Inst Agr Prod Proc Technol, Xian 710021, Peoples R China

[3] Shaanxi Univ Sci & Technol, Coll Arts & Sci, Xian 710021, Peoples R China

[4] China Leather & Footwear Ind Res Inst, Beijing 100016, Peoples R China

关键词: Enzyme;    Wet-blue;    Degreasing;    Bating;    Leather;   

DOI  :  10.1016/j.jclepro.2017.01.170

来源: Elsevier

【 摘 要 】

Enzyme is a green, efficient and easily degradable substance. In the present investigation, the papain and 100-c enzyme instead of part of surfactants were used in degreasing process. The results indicated that when wet-blue sheepleather was treated by the enzymatic compound, protein content in the effluent was about 9 times more than that of the non-ionic degreasing agent with less damage to collagen. Moreover, the degreasing rate for enzyme degreasing was 40.1% which was much higher than that of non-ionic degreasing agent. Mechanical properties of the crust leather treated by enzymatic compound were matchable to those treated by non-ionic degreasing agent. Color difference values of the leather indicated that the wet-blue sheepleather was easy to be dyed after being treated by enzymatic compound. The K/S value of the leather treated by enzymatic compound was much higher than that treated by non-ionic degreasing agent. Histological analysis of wet-blues visually showed efficient fat removal by enzymatic compound. Enzymatic compound used in degreasing of greasy wet-blues could improve the leather' quality. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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