6533b857fe1ef96bd12b4f11

RESEARCH PRODUCT

Diacetyl and acetoin production from the co-metabolism of citrate and xylose by Leuconostoc mesenteroides subsp. mesenteroides.

Hervé PrévostD. Q. HuangV. PhalipC VasseurCharles DivièsP. Schmitt

subject

Acetate kinaseXylosebiologyAcetoinAcetoinGeneral MedicineDiacetylXylosebiology.organism_classificationNADApplied Microbiology and BiotechnologyDiacetylCitric Acidchemistry.chemical_compoundchemistryBiochemistryXylose metabolismLeuconostoc mesenteroidesbiology.proteinFermentationLeuconostocBiotechnologyAlcohol dehydrogenase

description

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.

yearjournalcountryeditionlanguage
1997-06-27Applied microbiology and biotechnology
10.1007/s002530051000https://pubmed.ncbi.nlm.nih.gov/9237392