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Anais da Escola Superior de Agricultura Luiz de Queiroz

Print version ISSN 0071-1276

An. Esc. Super. Agric. Luiz de Queiroz vol.45  Piracicaba  1988

http://dx.doi.org/10.1590/S0071-12761988000100023 

ARTIGOS

 

Efeito dos ácidos fórmico e propiônico sobre a produção de alcoóis superiores durante a fermentação alcoólica

 

The effect of formic and propionic acids on higher alcohols production during alcoholic fermentation

 

 

L.E. Gutierrez

Departamento de Química da E.S.A. "Luiz de Queiroz" da Universidade de São Paulo -13.400 - Piracicaba, SP e CEBTEC/FEALQ

 

 


RESUMO

Foi estudado o efeito de concentrações de 250, 500 e 1000 ppm dos ácidos fórmico e propiônico sobre a produção de etanol e alcoóis superiores produzidos pela fermentação alcoólica de mosto sintético. Não foram detectadas diferenças significativas entre os tratamentos tanto para o ácido fórmico como para o ácido propiônico, embora uma redução não significativa no teor do álcool isoamílico foi observada com a dose de 1000 ppm dos ácidos fórmico e propiônico.

Termos para indexação: ácido fórmico, ácido propiônico, alcoóis superiores, fermentação alcoólica, Saccharomyces cerevisiae.


ABSTRACT

The effect of different concentrations of formic and propionic acids on the ethanol and higher alcohols production was studied with synthetic medium. There were no significant differences among ethanol , n-propilic, isobutilic and isoamilic alcohols in all treatments. However a reduction of isoamilic alcohol content was observed at higher levels of formic  and propionic acids.

Index terms: formic acid, propionic acid, higher alcohols, alcoholic fermentation, Saccharomyces cerevisiae.


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

AGRADEDIMENTOS

A FERMENTEC-Assessoria em Fermentação Alcoólica pelos recursos fornecidos.

 

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Rebecido para publicação em: 15.07.88
Aprovado para publicação em: 07.11.88

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