OALib Journal期刊
ISSN: 2333-9721
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一种嗜热细菌来源角质酶的分离纯化及酶学性质
DOI: 10.3724/SP.J.1145.2009.00846, PP. 846-850
Keywords: 嗜热细菌,角质酶,分离纯化,酶学性质,热稳定性
Abstract:
通过跟踪发酵液中pnpb水解酶活性,对角质诱导的thermobifidafusca发酵液进行分离纯化.采用活性炭脱色、硫铵沉淀、phenylhp疏水色谱、deaesepharose阴离子交换色谱等方法,分离纯化得到电泳纯pnpb水解酶.该酶水解角质可得到角质单体,是一种角质酶.sds-page电泳结果显示,角质酶表观分子量约为29×103.该酶的最适温度为60℃,在40℃和60℃下均具有良好的热稳定性.最适ph为8.0,ph稳定范围为6.0~9.0.该角质酶的生化性质适合在纺织工业中应用.图8表2参17
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