JOURNAL ARTICLE

Optimization for High Production Fermentation of Lunasin from Recombinant Pichia pastoris

冯国栋 康国凯Feng Guo-dong Kang Guo-kai

Year: 2016 Journal:   Zhongguo shengwu gongcheng zazhi Vol: 36 (8)Pages: 73-79   Publisher: Chinese Academy of Sciences Literature

Abstract

Lunasin是一个最初从大豆中分离,具有43个氨基酸的多肽,具有抗高血压,抗氧化活性,预防癌症,抗炎和降胆固醇的活性。为了实现Lunasin的高效生产,对重组毕赤酵母GS115 LN诱导阶段甲醇补料策略(溶氧反馈补料,指数-恒速补料)以及诱导温度进行了优化,并且在此基础上对双碳源(山梨醇、甘露醇)和甲醇混合补料策略以及复合氮源与甲醇混合补料策略进行了优化。研究表明,最优补料策略以及诱导温度分别为指数-恒速补料、24℃,最终在流加1%大豆蛋白胨以及0.02%天冬氨酸条件下,Lunasin表达量最高,达到3.27 g/L,是单一甲醇诱导的1.27倍。

Keywords:
Pichia pastoris Recombinant DNA Fermentation Pichia Food science Biology Biotechnology Chemistry Biochemistry Gene

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