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Characterization of yeast strains for wine production: Effect of fermentation variables on quality of wine produced

Identifieur interne : 002E58 ( Main/Exploration ); précédent : 002E57; suivant : 002E59

Characterization of yeast strains for wine production: Effect of fermentation variables on quality of wine produced

Auteurs : R. N. Ndip [Cameroun] ; J.-F. K. T. Akoachere [Cameroun] ; L. L. Dopgima [Cameroun] ; L. M. Ndip [Cameroun]

Source :

RBID : Pascal:02-0221279

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English descriptors

Abstract

Sixteen yeast strains isolated from grapefruit (Citrus paradis), orange (Citrus sinensis) and pineapple (Ananas comosus) were characterized using standard microbiological procedures. The species were identified as Saccharomyces uvarum, S. cerevisiae, S. carlbergensis, and S. ellipsoideus. Their abilities for wine production were tested by using sugar and ethanol tolerance tests. The best biochemically active strain, S. ellipsoideus, was used along with commercially available baker's yeast (S. cerevisiae) to produce wine from grapefruit, orange, and pineapple juices. After fermentation for 14 d with S. cerevisiae and 21 d with S. ellipsoideus, wines produced were compared with Baron de Valls (standard). The highest (10.47% [v/v]) and lowest (7.68% [v/v]) alcohol concentrations with corresponding residual sugar concentrations of 1.88% (w/v) and 7.7% (w/v) were produced from orange after fermentation with S. cerevisiae and S. ellipsoideus, respectively. S. ellipsoideus was found to be the best yeast strain producing wine with the highest acceptable score of 7.41 from orange. The study revealed the possibility of producing wine from our locally available fruits using simple, cheap, and adaptable technology with biochemically characterized yeast strains.


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<div type="abstract" xml:lang="en">Sixteen yeast strains isolated from grapefruit (Citrus paradis), orange (Citrus sinensis) and pineapple (Ananas comosus) were characterized using standard microbiological procedures. The species were identified as Saccharomyces uvarum, S. cerevisiae, S. carlbergensis, and S. ellipsoideus. Their abilities for wine production were tested by using sugar and ethanol tolerance tests. The best biochemically active strain, S. ellipsoideus, was used along with commercially available baker's yeast (S. cerevisiae) to produce wine from grapefruit, orange, and pineapple juices. After fermentation for 14 d with S. cerevisiae and 21 d with S. ellipsoideus, wines produced were compared with Baron de Valls (standard). The highest (10.47% [v/v]) and lowest (7.68% [v/v]) alcohol concentrations with corresponding residual sugar concentrations of 1.88% (w/v) and 7.7% (w/v) were produced from orange after fermentation with S. cerevisiae and S. ellipsoideus, respectively. S. ellipsoideus was found to be the best yeast strain producing wine with the highest acceptable score of 7.41 from orange. The study revealed the possibility of producing wine from our locally available fruits using simple, cheap, and adaptable technology with biochemically characterized yeast strains.</div>
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