Influence of oxygen limitation on glucose metabolism in Hanseniaspora uvarum K5 grown in chemostat |
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Authors: | Christine Venturin Hélène Boze G. Moulin P. Galzy |
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Affiliation: | (1) Chaire de Microbiologie et de Génétique des Micro-organismes Place Pierre Viala, E.N.S.A.-I.N.R.A., 1 Montpellier Cedex, France |
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Abstract: | Summary Growth and metabolite formation were studied as a function of oxygen feed rate, in glucose-limited chemostat cultures of Hanseniaspora uvarum K5 at a dilution rate of 0.26 h–1. Alcoholic fermentation occured at an oxygen feed rate of 80 mmol.l–1.h–1 . Below this value, pyruvate decarboxylase and alcohol dehydrogenase were present at high levels. In contrast, activities of oxidative metabolism enzymes, pyruvate dehydrogenase, aldehyde dehydrogenase and acetyl-CoA synthetase, decreased. |
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