In ABE fermentation, A, B, and E stand for which compounds?

In ABE fermentation, A, B, and E stand for which compounds?

• A. Acetone, Butanol, Propanol
• B. Acetone, Butanol, Ethanol
• C. Acetone, Butanol, Methanol
• D. Acetone, Butanol, Ethyl acetate

Answer: (B)

ABE fermentation yields three solvent products: acetone, butanol, and ethanol. The letters A, B, and E correspond to those exact compounds, forming the familiar trio acetone, butanol, and ethanol that this process is known for. Clostridium species carry out a two-stage metabolism where acetone and butanol are produced during solventogenesis, with ethanol as a co-product, giving a characteristic solvent mix rather than simple single-product fermentation. Among the options, the set acetone, butanol, and ethanol matches the actual products; the other choices replace ethanol with propanol, methanol, or ethyl acetate, which are not the standard main products of ABE fermentation.

ABE fermentation yields three solvent products: acetone, butanol, and ethanol. The letters A, B, and E correspond to those exact compounds, forming the familiar trio acetone, butanol, and ethanol that this process is known for. Clostridium species carry out a two-stage metabolism where acetone and butanol are produced during solventogenesis, with ethanol as a co-product, giving a characteristic solvent mix rather than simple single-product fermentation. Among the options, the set acetone, butanol, and ethanol matches the actual products; the other choices replace ethanol with propanol, methanol, or ethyl acetate, which are not the standard main products of ABE fermentation.