Abstract
L-Acetoin (L-AC) was produced from diacetyl (DA) by Escherichia coli JM109/pBUD119 containing the meso-2,3-butanediol dehydrogenase (D-AC forming) gene. However, when the strain was cultured in the presence of isopropyl-beta-D-thiogalacto-pyranoside, the enzyme formed catalysed not only D-AC but also L-AC. L-AC was further reduced to L-2,3-butanediol (BD). The yield of L-AC or L-BD from DA (3 gl-1) was about 70% (w/w).
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acetoin / metabolism*
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Alcohol Oxidoreductases / genetics
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Alcohol Oxidoreductases / metabolism*
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Butylene Glycols / metabolism
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Diacetyl / metabolism*
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Escherichia coli / enzymology*
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Escherichia coli / genetics
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Escherichia coli / growth & development
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Stereoisomerism
Substances
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Butylene Glycols
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Acetoin
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Alcohol Oxidoreductases
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butanediol dehydrogenase
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Diacetyl