Diacetyl and acetoin production from the co-metabolism of citrate and xylose by Leuconostoc mesenteroides subsp. mesenteroides.
The co-metabolism of citrate plus xylose by Leuconostoc mesenteroides subsp. mesenteroides results in a growth stimulation, an increase in D-lactate and acetate production and repression of ethanol production. This correlated well with the levels of key enzymes involved. A partial repression of alcohol dehydrogenase and a marked stimulation of acetate kinase were observed. High citrate bioconversion yields in diacetyl plus acetoin were obtained at pH 5.2 in batch (11.5%) or in chemostat (up to 17.4%) culture. In contrast, no diacetyl or acetoin was detected in citrate plus glucose fermentation.
Schmitt
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P
Laboratoire de Microbiologie, ENS.BANA, Université de Bourgogne, Dijon, France.
Vasseur
C
C
Phalip
V
V
Huang
D Q
DQ
Diviès
C
C
Prévost
H
H
D000093:Acetoin / Q000378:metabolism*; D019343:Citric Acid / Q000378:metabolism*; D003931:Diacetyl / Q000378:metabolism*; D007934:Leuconostoc / Q000378:metabolism*; D009243:NAD / Q000378:metabolism; D014994:Xylose / Q000378:metabolism*
D009243:NAD; D019343:Citric Acid; D014994:Xylose; D000093:Acetoin; D003931:Diacetyl