Q.1 (i) The microorganism used for production of beverages like wine, whisky, etc. is _____.
A. Streptomyces venezuelae
B. Saccharomyces cerevisiae
C. Aspergillus niger
D. Streptomyces griseus
Best answer
Answer: B. Saccharomyces cerevisiae
Answer: (b) Saccharomyces cerevisiae
Brewer’s yeast, Saccharomyces cerevisiae, ferments sugars of fruit juice or malted cereals into ethyl alcohol and CO2. Wine and beer are made without distillation, while whisky, brandy and rum are made by distilling the fermented broth. Streptomyces venezuelae and S. griseus produce antibiotics (chloramphenicol, streptomycin) and Aspergillus niger produces citric acid.
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