Linked Life Data

8017930

Source:http://linkedlifedata.com/resource/pubmed/id/8017930

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1994-7-28
pubmed:abstractText
The metabolic and energetic characterization of the growth of Leuconostoc oenos on glucose-citrate or glucose-fructose mixtures enables the potential role of this bacterium in the wine-making process to be ascertained. Moreover, mixotrophic conditions remain a suitable means for improving biomass productivities of malolactic starter cultures. When the malolactic bacterium L. oenos was grown in batch cultures on complex medium at pH 5.0 with glucose-citrate or glucose-fructose mixtures, enhancement of both the specific growth rate and biomass production yields was observed. While growth was possible on fructose as the sole source of energy, citrate alone did not allow subsequent biomass production. The metabolic interactions between the catabolic pathways of the glucose cosubstrates and the heterofermentation of hexoses led to an increased acetate yield as a result of modified NADH oxidation. However, the calculated global coenzyme regeneration showed that the reducing equivalent balance was never equilibrated. The stimulatory effects of these glucose cosubstrates on growth resulted from increased ATP synthesis by substrate-level phosphorylation via acetate kinase. While the energetic efficiency remained close to 10 g of biomass produced per mol of ATP, the increase in the specific growth rate and biomass production yields was directly related to the rate and yield of ATP generation.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0099-2240
pubmed:author
pubmed:issnType
Print
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1459-66
pubmed:dateRevised
2010-9-13
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Growth and energetics of Leuconostoc oenos during cometabolism of glucose with citrate or fructose.
pubmed:affiliation
Centre de Bioingéniére Gilbert Durand, URA-CNRS 544, Toulouse, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't