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首页> 外文期刊>Journal of Biotechnology >Extremozymes for improving wool properties
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Extremozymes for improving wool properties

机译：改善羊毛性能的极端酶

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The project 'EXTRETEX' funded by the Gen-nan Federal Foundation Environment (DBU, Osnabruck, Germany) aims at the improvement of wool properties dyeability, handle, felting behaviour and degree of whiteness by means of enzymes derived from extremophilic micro-organisms. In this paper the effects of a commercial thermo- and alkalistable protease on wool with regard to the degree of whiteness, the dyeability and the felting behaviour are presented. A method to treat wool top and wool fabric was developed on a laboratory scale in which the protease was integrated into the pre-washing step of a dyeing process. This treatment method was than scaled up and tested on an industrial winch beck for fabric. With this method-the addition of enzyme in the pre-washing step-the degree of whiteness is generally enhanced. Dyeing untreated and the enzyme-treated wool with Lanasol Blue 8G leads to an improved dyestuff uptake and a distinctive difference in the colour shade for the latter. Microscopy pictures of fibre cross-sections of these samples display a more even distribution of the dyestuff and a better penetration in the enzyme-treated wool fibres but the colour fastness of the enzyme-treated wool is decreased. Though the felting behaviour of the protease treated wool is significantly improved the felting tendency is still too high for an antifelting finish. An increased damage of the enzyme-treated wool in comparison with the untreated one was not observed.
机译：由Gen-nan Federal Foundation Environment（德国奥斯纳布吕克，DBU）资助的“ EXTRETEX”项目旨在通过衍生自极端微生物的酶改善羊毛的可染性，手感，毡感行为和白度。在本文中，就白度，可染性和毡化行为方面，介绍了商业用热和碱稳定蛋白酶对羊毛的影响。在实验室规模上开发了一种处理羊毛上衣和羊毛织物的方法，其中将蛋白酶整合到染色过程的预洗涤步骤中。然后将该处理方法扩大规模并在用于工业用绞盘的织物上进行测试。使用这种方法-在预洗涤步骤中添加酶-白度通常会提高。使用Lanasol Blue 8G对未经处理和经酶处理的羊毛进行染色，可以改善染料的吸收率，并为后者提供显着的色泽差异。这些样品的纤维横截面的显微照片显示出染料的分布更均匀，并且在酶处理的羊毛纤维中具有更好的渗透性，但是酶处理的羊毛的色牢度降低。尽管经蛋白酶处理的羊毛的毡合性能得到显着改善，但对于防毡整理而言，毡合趋势仍然过高。与未处理的羊毛相比，未观察到经酶处理的羊毛的损坏增加。

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