Question

Fermentation for the industrial production of ethanol is carried out by

• A. Saccharomyces
• B. Lactobacillus
• C. Streptomyces
• D. Acetobacter

Answer 1

The correct option is A Saccharomyces

Microbial production of one of the organic feedstocks from plant substances such as molasses is presently used for ethanol production. The commercial production is carried out with Saccha­romyces cerevisiae. Saccharomyces cerevisiae starts producing ethanol at the rate of 10% (v/v) with 10-20g cells dry weight/lit. The reduction in fermentation time is accomplished use of ceil recycling continuously in fermentation.

So the correct answer is 'Saccharomyces'.