Which of the following microbes is commonly referred to as brewer's yeast and is used industrially for fermenting malted cereals and fruit juices to produce ethanol?

Step-by-step solution

Saccharomyces cerevisiae is commonly known as brewer's yeast and is used industrially for fermenting malted cereals and fruit juices to produce ethanol. Aspergillus niger is a fungus used for the commercial production of citric acid. Acetobacter aceti is a bacterium used for the production of acetic acid. Clostridium butylicum is a bacterium used for the production of butyric acid. Answer: Saccharomyces cerevisiae