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Which of the following is used to manufacture ethanol from starch :
A
Penicillium
B
Saccharomyces
C
Azotobacter
D
Lactobacillus
Detailed Solution
Starch is first hydrolysed to sugars (by amylase or acid). The yeast Saccharomyces cerevisiae then ferments the sugar into ethanol and $CO_2$: $C_6H_{12}O_6 \rightarrow 2C_2H_5OH + 2CO_2$
Penicillium gives penicillin, Azotobacter fixes nitrogen and Lactobacillus produces lactic acid.
So Saccharomyces is used to manufacture ethanol from starch.
Penicillium gives penicillin, Azotobacter fixes nitrogen and Lactobacillus produces lactic acid.
So Saccharomyces is used to manufacture ethanol from starch.