Question

Alcoholic fermentation is brought about by

• A. Lactobacillus
• B. Saccharomyces
• C. Trichoderma
• D. Streplomyces

Answer 1

The correct option is B Saccharomyces

Alcohol fermentation is also called ethanol fermentation. It is a biological process in which sugar (sucrose, fructose, glucose) is converted into cellular energy, producing ethanol and carbon dioxide. It is done by the anaerobic (in absence of oxygen) respiration of some organisms, i.e. yeast species. The most commonly used organism for this purpose is Saccharomyces species. This process is mostly used in the alcohol industries. The alcohol fermentation occurs in the cytosol of yeast cells. Yeast cells consume sugar and produce ethanol and carbon dioxide as a waste product. So, the correct option is B.