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Characteristics of selected features of brewing yeasts in environments containing T-2 toxin

100%

Foszczynska B., Dziuba E., Kawa-Rygielska J., Chmielewska J., Wojtatowicz M.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2006

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tom 09

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nr 1

The influence of various concentrations of T-2 toxin on the growth ability and fermentation activity of brewing yeasts was examined. Four cultures of top and bottom fermenting yeast strains were maintained in YEPG medium containing T-2 toxin at the concentration of 2,5; 5; 10; 15; 20 i 50 μg·ml-1. The maximum specific growth rate (μmax) and biomass yield were determined. Concentrations of 5, 10 and 15 μg T-2·ml-1 were selected for the fermentation of malt wort. During top (20-22°C) and bottom fermentation (12-14°C), the following were examined: physiological condition of yeasts, fermentation dynamics and the degree of utilisation of amino acid nitrogen and the extract. It was observed that the presence of T-2 toxin in the medium resulted in lowered specific growth rate and biomass yield. T-2 toxin had an unfavourable influence on the physiological condition of yeasts and disrupted the mechanism of the intake of extract components, including amino acid nitrogen, which affected the dynamics of fermentation. Top fermenting yeasts, esp. S. cervisiae 46 strain, were more susceptible to T-2 toxin than bottom fermenting yeasts.

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The use of Geotrichum candidum starter culture for protection of barley and its influence on biotechnological qualities of malts

84%

Foszczynska B., Dziuba E., Stempniewicz R.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2004

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tom 07

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nr 2

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The influence of irrigation and nitrogen fertilization on the occurence of fungal diseases on brewing and fodder barley

84%

Sadowski C., Zarski J.

Genetica Polonica

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1994

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tom 35B

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Hydrolases of Geotrichum candidum yeasts in barley beta-glucan degradation

67%

Piegza M., Witkowska D., Robak M.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2006

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tom 09

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nr 4

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Reakcje wybranych odmian jeczmienia browarnego na porazenie klosow grzybami z rodzaju Fusarium

59%

Lawecki T., Korbas M.

Progress in Plant Protection

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2002

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tom 42

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nr 2

868-871

Ograniczanie wyników

3 Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

1 Genetica Polonica

1 Progress in Plant Protection

2 Dziuba E.

2 Foszczynska B.

1 Chmielewska J.

1 Kawa-Rygielska J.

1 Korbas M.

1 Lawecki T.

1 Piegza M.

1 Robak M.

1 Sadowski C.

1 Stempniewicz R.

1 Witkowska D.

1 Wojtatowicz M.

1 Zarski J.

2 2006

1 2004

1 2002

1 1994

Characteristics of selected features of brewing yeasts in environments containing T-2 toxin

The use of Geotrichum candidum starter culture for protection of barley and its influence on biotechnological qualities of malts

The influence of irrigation and nitrogen fertilization on the occurence of fungal diseases on brewing and fodder barley

Hydrolases of Geotrichum candidum yeasts in barley beta-glucan degradation

Reakcje wybranych odmian jeczmienia browarnego na porazenie klosow grzybami z rodzaju Fusarium