Biological functional active polypeptides can be prepared by through Marine products defatting, enzymic hydrolysis and isolation.

对海产品蛋白质进行脱脂、酶水解并进一步分离纯化，制备生物功能活性多肽。

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The methods employed fOR enzyme isolation from cell extracts OR from biological fluids are essentially those fOR the purification of proteins.

从细胞萃取液或生物液体中分离酶的方法，基本上就是纯化蛋白质的方法。

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The gene structure, biochemical characteristics, biological functions in solubilizing fibrin, enzyme activity assay, isolation and purification of nattokinase are reviewed in this paper.

本文就纳豆激酶的基因结构、生化特性、生物学功能、酶活性测定及分离纯化等方面进行了综述。

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The FDA has long considered that even minor changes in the production of biological drugs--including exactly the same isolation and purification procedures applied at significantly larger scale than previously--yield a distinct and new drug that must undergo an independent demonstration of safety and efficacy.

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