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Conversion of methionine to methional by Lactococcus lactis


Conversion of methionine to methional by Lactococcus lactis



FEMS Microbiology Letters 204(1): 189-195



ISSN/ISBN: 0378-1097

PMID: 11682200

DOI: 10.1111/j.1574-6968.2001.tb10884.x

Lactic acid bacteria were screened for methional production from 4-methylthio-2-ketobutanoate. Only Lactococcus lactis IFPL730 produced high amounts of methional. It was demonstrated that production of this compound was an exclusively enzymatic reaction. The present work describes for the first time that L. lactis can convert enzymatically methionine to methional in a process mediated by aminotransferase and alpha-ketoacid decarboxylase activities. The activity seems to be strain dependent.

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