新型乳酸细菌屎肠球菌 QU25 高效同型发酵木糖生产 L-(+)-乳酸。
Efficient homofermentative L-(+)-lactic acid production from xylose by a novel lactic acid bacterium, Enterococcus mundtii QU 25.
机构信息
Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
出版信息
Appl Environ Microbiol. 2011 Mar;77(5):1892-5. doi: 10.1128/AEM.02076-10. Epub 2010 Dec 30.
Abstract
Enterococcus mundtii QU 25, a newly isolated lactic acid bacterium, efficiently metabolized xylose into l-lactate. In batch fermentations, the strain produced 964 mM l-(+)-lactate from 691 mM xylose, with a yield of 1.41 mol/mol xylose consumed and an extremely high optical purity of ≥99.9% without acetate production.
摘要
屎肠球菌 QU25 是一株新分离的乳酸菌，能高效地将木糖代谢为 l-乳酸。在分批发酵中，该菌株从 691 mM 的木糖中生产出 964 mM 的 l-(+)-乳酸，木糖消耗得率为 1.41 mol/mol，光学纯度高达≥99.9%，且不产生乙酸。
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