Efficient Homofermentative l -(+)-Lactic Acid Production from Xylose by a Novel Lactic Acid Bacterium, Enterococcus mundtii QU 25

Author:

Abdel-Rahman Mohamed Ali12,Tashiro Yukihiro3,Zendo Takeshi1,Hanada Katsuhiro1,Shibata Keisuke1,Sonomoto Kenji14

Affiliation:

1. Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan

2. Botany and Microbiology Department, Faculty of Science (Boys), Al-Azhar University, PN:11884, Nasr City, Cairo, Egypt

3. Department of Life Study, Seinan Jo Gakuin University Junior College, 1-3-5 Ibori, Kita-ku, Kokura, Kitakyushu City, Fukuoka 803-0835, Japan

4. Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan

Abstract

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.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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