Effect of phosphate on the multiplication of Saccharomyces cerevisiae in continuous cultivation / Efeito de fosfato sôbre a multiplicação de Saccharomyces cerevisiae em cultivo contínuo

AUTOR(ES)

Sunao Sato

DATA DE PUBLICAÇÃO

1983

RESUMO

The influence of phosphate in a continuous culture was studied using mini-fermentor on the Saccharomyces cerevisiae multiplication. Dry matter, substrate concentration, specific substrate comsumption, specific carbon dioxide release, specific oxygen uptake rates and respiration quotient , as well as phosphorous content of the cells were measured in dependence on the dilutionrate. In continuous culture glicose-limited, of bakers yeast if the supply of phosphorous were restricted to a extent that residual phosphate in the medium could hardly be observed, the value of critical dilution rate was apparently enhanced from 0,23 h-1 to 0,32 h-1. This observation suggests a possible mediation by phosphate between anaerobic and aerobic functions of the bakers yeast.

ASSUNTO(S)

baker´s yeast glicose cultivo contínuo panificação critical dilution rate glucose-phosphate limited continuous cultivation chemostat culture fosfato glucose limited

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