Sousa, M. L.

Teixeira, J. A.

Universidade do Minho: RepositoriUM

Characterization of oxygen consumption in a flocculating yeast strain

CHARACTERISATION OF OXYGEN CONSUMPTION IN A FLOCCULATING YEAST STRAIN MARIA L. SOUSA and JOSE A. TEIXEIRA Departamento de Engenharia Biol6gica Unive rsidade do Minho,Campus de Gualtar,4700 Braga,PORTUGAL Summary Flocculation bioreactors are-one of the most attractive cel ,l retention systems . Howeve r, diffusi onal limitations for mass transfer in floes are a significative drawback. One way to · circumvent these limitations is the utilisation o f charged polymers that control floc porosity.Mass transfer limitations may also induce metabolic alterations in the cells ins ide the f locs. In yeast fermentation it is the conjugated action of glucose and oxygen, that controls the dominating metabolic pathway.The character·isatiop of the effect of an anionic polymer - Magna Floc LT 25 - in oxygen transfer, oxygen consumption and metabolic activity - in a flocculating strain· of 'Saccharomyces cerevisiae is 'presented . EB P55 

Characterization of oxygen consumption in a flocculating yeast strain

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Universidade do Minho: RepositoriUM

Universidade do Minho: RepositoriUM