Effect of mycotoxins DAS, ZEA and OTA on the growth of brewing yeast

• Autorzy: Dziuba E. , Foszczynska B. , Stempniewicz R.

Warianty tytułu

PL

Wplyw mykotoksyn DAS, ZEA i OTA na wzrost drozdzy piwowarskich

• Języki publikacji: EN

Abstrakty

EN

The aim of the study was to assess how different concentrations of diacetoxyscirpenol (DAS), zearalenone (ZEA) and ochratoxin A (OTA) affect the growth of 4 brewing yeast strains in the model medium YEPG. Determinations were carried out for the following parameters: specific growth rate, duration of the log phase, and biomass yield. The results of the study showed that OTA exerted no toxic effect over the concentration range of 2.5 to 50 μg/mL. ZEA had an adverse influence on yeast growth only following application of the highest doses (50 and 100 μg/mL). DAS showed the highest toxicity, which inhibited the growth of all strains examined, even at the lowest concentration (2.5 μg/mL) applied. Each of the brewing yeasts strains showed a specific sensitivity to the toxins. The strains S. carlsbergensis 13 and S. cerevisiae 46 were found to be the least resistance, particularly to DAS.

PL

Celem pracy było określenie wpływu zróżnicowanych stężeń diacetoksyscirpenolu (DAS), zearalenonu (ZEA) i ochratoksyny A (OTA) na wzrost 4 szczepów drożdży piwowarskich w podłożu modelowym YEPG. Badano właściwą szybkość wzrostu, długość fazy logarytmicznego wzrostu oraz plon biomasy. Stwierdzono, że OTA w zakresie stężeń od 2,5 do 50 μg/mL nie ograniczała wzrostu badanych szczepów drożdży. Zearalenon wpływał niekorzystnie dopiero przy dwóch najwyższych stężeniach (50 i 100 μg/mL). Największą toksyczność wykazał DAS, który hamował wzrost wszystkich drożdży począwszy od najniższej dawki 2,5 μg/mL. Badane szczepy drożdży charakteryzowały się indywidualną wrażliwością na toksyny. Najmniej oporne, zwłaszcza na toksynę DAS, były szczepy: S. carlsbergensis 13 oraz S. cerevisiae 46.

Słowa kluczowe

EN

yeast; brewing yeast; yeast growth; mycotoxin; diacetoxyscirpenol; zearalenone; ochratoxin A; determination; biomass yield; specific growth rate

• Wydawca: -
• Czasopismo: Polish Journal of Food and Nutrition Sciences
• Rocznik: 2007
• Tom: 57
• Numer: 4[A]
• Opis fizyczny: p.123-129,fig.,ref.

Twórcy

autor

Dziuba E.

• Wroclaw University of Environmental and Life Sciences, Norwida 25/27, 50-375 Wroclaw, Poland

autor

Foszczynska B.

autor

Stempniewicz R.

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