雅罗维亚
脱脂
脂肪酶
化学
流出物
酵母
有机化学
制浆造纸工业
色谱法
食品科学
生物化学
废物管理
酶
工程类
作者
Emna Moujehed,Zied Zarai,Haifa Khemir,Neila Miled,Mohamed Salah Bchir,Corinne Gablin,François Bessueille,Anne Bonhommé,Didier Léonard,Frédéric Carrière,Ahmed Aloulou
标识
DOI:10.1016/j.colsurfb.2021.112292
摘要
Conventional degreasing of skins and hides in the leather industry requires high amounts of organic solvents and detergents that cause environmental issues. In this study, the LIP2 lipase from the yeast Yarrowia lipolytica (YLLIP2) was shown to be effective in degreasing sheepskins, thus reducing the amount of harmful chemicals. Using 6 mg of lipase/kg of raw skin, successful degreasing was achieved in only 15 min at pH 8 and 30°C. ToF-SIMS mass spectra of chemically and enzymatically treated sheepskins are consistent with a selective elimination process for the enzymatic treatment. Comparative SEM microscopy, ATR-FTIR spectroscopy and physicochemical analyses showed better properties of the enzymatically treated leather than those of the chemical treatment. Effluent physicochemical parameters showed that the enzymatic treatment is a cleaner degreasing operation. Altogether, this work opens new horizons to use the YLLIP2 lipase as a more efficient alternative in the leather industry.
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