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黑曲霉所产α-L-鼠李糖苷酶制备普鲁宁

Journal of Nanchang University(Natural Science)(2017)

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Abstract
前期筛选得到一株产α-L-鼠李糖苷酶的黑曲霉,并利用该酶转化柚皮苷制备普鲁宁.该黑曲霉在以芦丁作为诱导剂的液体培养基中发酵72 h,对发酵液用70%硫酸铵沉淀,透析得到α-L-鼠李糖苷酶的粗酶液.经优化该酶的最适转化温度为50℃,最适pH为5.0,在此条件柚皮苷转化2h后的转化率高达到97%以上.本研究可为α-L-鼠李糖苷酶用于制备普鲁宁这一类生物转化提供有效借鉴.
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