Conservation of liquid yeast using different additives and concentrations

Authors

  • Fernando Basile de Castro Instituto de Zootecnia, Divisão de Zootecnia de Bovinos Leiteiros, Seção de Criação e Manejo do Gado Leiteiro, Nova Odessa, SP
  • Paulo Fernando Machado Universidade de São Paulo, ESALQ, Departamento de Zoologia, Piracicaba, SP

Keywords:

yeast, conservation, quimic additives

Abstract

The conservation of liquid alcohol yeast in closed tubes were evaluated using different additives and concentrations. The following treatment were evaluated: control, formaldehyde, formic acid and HC1, each of them with 0.2, 0.4 and 0.8% (wt/wt) and extract of auto-hydrolyzed sugar-cane bagasse (EAHB) with 1 , 2 and 4% (wt/wt). These samples were stored during 0 , 3 and 6 weeks. The treatments were evalued using gas production, soluble nitrogen, total nitrogen, ammoniacal nitrogen, pH and DM analysis. The results indicated that yeast preservation was reasonable until 3 weeks even without additives. After this period the use of chemical additive decreases degradation of protein. Among additives used formaldehyde was the most effective, having the formic acid and HC1 an intermediate effect and EAHB the minor effect.

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Published

2014-01-14

Issue

Section

ANIMAL NUTRITION

How to Cite

Conservation of liquid yeast using different additives and concentrations. (2014). Bulletin of Animal Husbandry, 47(2), 105-110. http://bia.iz.sp.gov.br/index.php/bia/article/view/890

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