Fermentation of 12% (w/v) glucose to 1.2 M lactate by Escherichia coli strain SZ194 using mineral salts medium

Biotechnology Letters
S ZhouL O Ingram

Abstract

A non-recombinant mutant of Escherichia coli B, strain SZ194, was developed that produces over 1 M D-lactate from glucose (or sucrose) in 72 h using mineral salts medium supplemented with 1 mM: betaine in simple anaerobic fermentations. Rates and yields were highest at pH 7.5. Yields approached the theoretical maximum with only trace amounts of co-products. Chiral purity of D-lactate was estimated to be 95%. Specific and volumetric productivities for SZ194 in mineral salts medium (pH 7.5) with betaine were equivalent to those in Luria broth.

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Citations

Sep 18, 2007·Applied Microbiology and Biotechnology·Xueli ZhangL O Ingram
May 28, 2009·Journal of Industrial Microbiology & Biotechnology·José UtrillaAlfredo Martinez
Sep 6, 2008·Biotechnology Letters·L P YomanoL O Ingram
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