Appl. Environ. Microbiol. doi:10.1128/AEM.02719-07
Copyright (c) 2008, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.
High folate production in fermented foods by the B12 producer Lactobacillus reuteri JCM1112
Filipe Santos,
Arno Wegkamp,
Willem M. de Vos,
Eddy J. Smid,
and
Jeroen Hugenholtz*
Kluyver Centre for Genomics of Industrial Fermentation, TI Food and Nutrition, and NIZO food research, Kernhemseweg 2, P.O. Box 20, 6710 BA Ede, The Netherlands; Laboratory of Microbiology, Wageningen University and Research Centre, Dreijenplein 10, 6703 HB Wageningen
* To whom correspondence should be addressed. Email:
jeroen.hugenholtz{at}nizo.nl.
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Abstract |
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We observed that Lactobacillus reuteri JCM1112 produces B12 and folate. However, the folate/B12 mass-to-mass ratio found was far below that desired for human consumption (
170:1). We used metabolic engineering applying genetic and physiological approaches to improve this ratio, and developed a generic and natural process that significantly increases folate production.