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Effect of citrate on growth of Lactococcus lactis subsp. lactis in milk Inra
Haddad, S.; Sodini, I.; Monnet, C.; Latrille, E.; Corrieu, G..
The effect of citrate on the growth of Lactococcus lactis subsp. lactis var. diacetylactis in milk has been investigated. Five strains of Lactococcus lactis subsp. lactis var. diacetylactis were compared to their citrate-negative variants, which lack the plasmid coding for citrate permease. In most cases, acidification kinetics and the final bacterial concentration of pure cultures of parental and variant strains did not differ significantly. Co-cultures of parental and variant strains, however, systematically tended towards the predominance of parental strains. Citrate metabolism is responsible for this change, since the predominance of citrate-positive strains was not observed in the absence of citrate. Continuous culture in milk enabled the difference...
Tipo: Journal Article Palavras-chave: CITRATE; ACIDIFICATION; DIACETYLE; BIOTECHNOLOGIE; LACTOSE; ACETATE.
Ano: 1997 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9900008445078195&uri=/notices/prodinra1/2010/09/
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Lactose transport system of Streptococcus thermophilus: Functional reconstitution of the protein and characterization of the kinetic mechanism of transport Inra
Foucaud, C.; Poolman, B..
Tipo: Journal Article Palavras-chave: LACTOSE; CINETIQUE.
Ano: 1992 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9300017054028896&uri=/notices/prodinra1/2010/09/
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