Tolerance and response of Saccharomyces cerevisiae wine strains to stress treatments
Latin American Applied Research, cilt.54, sa.1, ss.21-30, 2024 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 54 Sayı: 1
- Basım Tarihi: 2024
- Doi Numarası: 10.52292/j.laar.2024.1147
- Dergi Adı: Latin American Applied Research
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.21-30
- Anahtar Kelimeler: Ethanol stress, Intacellular trehalose, Saccharomyces cerevisiae, Temperature stress
- Ankara Üniversitesi Adresli: Hayır
Özet
This study evaluated the stress tolerance and stress response of three indigenous Saccharomyces cerevisiae strains and one reference strain against temperature (45, 50, and 55 °C) and ethanol (12 and 14 % v/v) stresses over time by assessing the yeast counts and intracellular trehalose content. The maximum decrease in the yeast counts was at 55 °C and 14 % ethanol. At 45 °C and 14 % ethanol the highest intracellular trehalose content was induced for all strains (P < 0.05). The correlation between the trehalose content and Log N levels of the strains was significant with the correlation coefficient (r) 0.62 and 0.39 for strains 2 and 7 against temperature stress. A strong and significant correlation was also determined with r values for strains 2,7, 47 in response to the ethanol stress, respectively (P < 0.05).