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Journal of Dairy Science Vol. 66 No. 1 21-28
© 1983 by American Dairy Science Association ®
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Balanced Flora of an Industrial Fermenter: Production of Yeast from Whey

G. Moulin, B. Malige1 and P. Galzy

ENSA — INRA Chaire de Génétique et Microbiologie, Place Viala, 34060 Montpellier, Cedex, France

ABSTRACT

The nature of the balanced yeast in an industrial fermenter is reported. There was an association of three species of yeast during continuous growth. Variation of yield was linked to metabolism of the dominant species and to oxygen transfer in the fermenter. Variation in temperature, pH, and dilution rate did not change the flora balance. However, lactose concentrations from 20 to 27 g/liter greatly affected yield. Thus, the balanced flora allowed many possibilities in treatment of whey and resulted in a great stability of production as only two dominant species varied in proportion to lactose and lactic acid concentrations.

FOOTNOTES

1 C.R.V. Fromagerie Bel Boulevard de l'Industrie 41100 Vendome France.






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Copyright © 1983 by the American Dairy Science Association ®.