Metabolically engineered lactic acid bacteria and their use

Chemistry: molecular biology and microbiology – Micro-organism – per se ; compositions thereof; proces of... – Bacteria or actinomycetales; media therefor

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C435S252100, C435S853000, C424S093450

Reexamination Certificate

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07465575

ABSTRACT:
Mutants of lactic acid bacteria includingLactococcus lactiswhich are defective in pyruvate formate-lyase production and/or in their lactate dehydrogenase (Ldh) production and methods of isolating such mutants or variants are provided. The mutants are useful in the production of food products or in the manufacturing of compounds such as diacetyl, acetoin and acetaldehyde and as components of food starter cultures.

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