硅酸钠提高山羊皮酶脱毛效果的初探

Studies on Enhancement of Influence of Sodium Silicate on Enzymatic Dehairing for Goat Hides

为提高山羊皮酶脱毛的效果,采用单因素试验方法,研究了用硅酸钠辅助JW-2蛋白酶进行山羊皮酶脱毛的工艺实验及2种脱毛方式的脱毛效果,即山羊皮于脱毛酶液中浸泡一定时间后再进行堆置脱毛的方式(简称浸酶堆置酶脱毛)和常规涂酶堆置脱毛方式。结果表明:浸酶堆置脱毛方式的效果优于涂酶堆置脱毛;硅酸钠对JW-2蛋白酶的活力及浸酶堆置酶脱毛的效果有一定的促进作用;当硅酸钠和酶的用量分别为1%和4%时,可产生完全脱毛效果,且脱毛后裸皮的粒面光滑、白净。硅酸钠辅助酶脱毛比传统灰碱脱毛和不加硅酸钠的酶脱毛所得成革的面积分别增加了7.7%和1.3%。

To improve the effect of goat skin enzymatic unhairing, technology of goat skin protease JW-2 dehairing assisted by sodium silicates was investigated in single-factor experimentation, moreover, effectiveness of two sorts of depilating methods, a dip and pile method, and a paint and pile method, were also compared. Results indicate that effect of a dip and pile method is better than that of paint and pile method and activities of protease JW-2 and effect of enzymatic unhairing are accelerated by sodium silicates. Further more, complete dehairing effect is obtained by 1% sodium silicate and 4% enzyme JW-2 and grain shows smooth and clear. Areas of crust leathers of enzymatic dehairing assisted by sodium silicates are 7. 7% and 1.3%, respectively, larger than those of traditional liming and enzymatic dehairing methods.