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Descripción
This paper describes the selection of Schizosaccharomyces yeasts with adequate oenological suitability and high capacity for the degradation of malic acid. Despite the almost non-existent number of commercial strains, the use of this yeast genus has recently been recommended by the International Organisation of Vine and Wine (OIV, in French). Thus, in the present study, a large number of Schizosaccharomyces strains were isolated using a selective differential medium. Initially, classic parameters of oenological interest for the use of fermentative strains of Saccharomyces cerevisiae (the most frequently used type of yeast) were assessed. Only five strains of moderate acetic acid production lower than 0.4 g/L were obtained at the end of fermentation. Other, more specific features of this yeast genus? physiology were also studied, including urease activity and the production of pyruvic acid and glycerol. Finally, oenological suitability was determined by comparing selected strains with other Schizosaccharomyces reference and S cerevisiae control strains. Schizosaccharomyces strains produced 80% less urea content, four times higher pyruvic acid levels and 1 g higher glycerol contents than the Saccharomyces reference strains. The results confirmed that it is possible to perform selective processes on microorganisms from the genus Schizosaccharomyces using methodology developed in this work to obtain strains of industrial interest.
Internacional	Si
JCR del ISI	Si
Título de la revista	Food Microbiology
ISSN	0740-0020
Factor de impacto JCR	3,407
Información de impacto	Datos JCR del año 2012
Volumen	42
DOI
Número de revista
Desde la página	218
Hasta la página	224
Mes	SIN MES
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• Autor: Santiago Benito Saez (UPM)
• Autor: Felipe Palomero Rodriguez (UPM)
• Autor: Fernando Calderon Fernandez (UPM)
• Autor: Daniel Palmero Llamas (UPM)
• Autor: Jose Antonio Suarez Lepe (UPM)

• Creador: Departamento: Producción Agraria