Productivity enhancement of S-adenosylmethionine in Saccharomyces cerevisiae using n-hexadecane as oxygen vector

文献类型： 外文期刊

第一作者： Meng, Xiumei

作者： Meng, Xiumei;Li, Minghua;Du, Fangling;Zhao, Xiaoyan;Diao, Enjie

作者机构：

关键词： n-hexadecane;Oxygen vector;S-adenosylmethionine;Saccharomyces cerevisiae

期刊名称：JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY （ 影响因子：3.174； 五年影响因子：3.137 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Background: Saccharomyces cerevisiae is one of the main microorganisms that can produce S-adenosylmethionine (SAM) from L-methionine and ATP with high productivity. To satisfy the ATP requirement for SAM synthesis, sufficient oxygen should be supplied to the medium to improve aerobic metabolism in S. cerevisiae. In this study, n-hexadecane used as oxygen vector for enhancement of SAM production by this yeast was investigated. Results: N-hexadecane was most favorable for cell growth and SAM synthesis in S. cerevisiae when added at the time of inoculation. It could increase glucose consumption, reduce ethanol accumulation, and ultimately improve biomass and SAM productivity in a fermentation process. In a bioreactor, the highest yield of SAM (2.27 g L ~(-1)) was achieved in the presence of 4% (v/v) n-hexadecane after 24 h of inoculation, which was 23.37% higher than the control (1.84 g L ~(-1)). Conclusion: The addition of n-hexadecane to cultures of S. cerevisiae significantly enhanced SAM production without increasing energy consumption, and has the potential for use in large-scale fermentation processes to increase oxygen supply.

分类号： Q81

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