Kinetic evaluation of a fermentation process of whey through Kluyveromyces fragilis.

Authors

  • Caio Abércio da Silva Universidade Estadual de Londrina
  • Raul J. H. Castro-Gomez Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.1995v16n1p17

Keywords:

Kluyveromyces fragilis, Food yeast, Whey.

Abstract

The yeast Kluyveromyces fragilis, 71-78, was cultived in whey 15% (w/v) suplemented with 0.5% (w/v) of KH2P04 and 0.5% (w/v) of (NHJ2S04 during 17 hours at 34°C, pH 5.3 and agitation rate of 300 rpm. During the fermentation process six parameters were evaluated: pH, lactose level, total protein, ethanol, total yeast and dry matter. At the end of the process, there was no lactose left, 25.46 g/l of ethanol, 39.63% protein (d.b.) and 6.21% dry matter was produced. pH was 4.49 and yeast cell count was 1.17 x 10/g. This fermentation was found to be an acceptable process for reduction of the polluting potential of whey.

 

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Author Biographies

Caio Abércio da Silva, Universidade Estadual de Londrina

 

Departamento de Zootecnia/Centro de Ciências Agrárias / Universidade Estadual de Londrina,  Caixa Postal 6001, Londrina. PR. Brasil. CEP 86051-970.

Raul J. H. Castro-Gomez, Universidade Estadual de Londrina

Departamento de Tecnologia de Alimentos e Medicamentos / Universidade Estadual de Londrina.

Published

1995-01-25

How to Cite

Silva, C. A. da, & Castro-Gomez, R. J. H. (1995). Kinetic evaluation of a fermentation process of whey through Kluyveromyces fragilis. Semina: Ciências Agrárias, 16(1), 17–21. https://doi.org/10.5433/1679-0359.1995v16n1p17

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