Fermentation uses an organic molecule as a final electron acceptor. Aerobic respiration produces 36-38 ATP per glucose molecule, and is the most efficient form of energy production. Anaerobic respiration is more efficient than fermentation, but less efficient than aerobic respiration. The ATP yield per glucose molecule varies, depending on the final electron acceptor used. Carbohydrate fermentation tube.
Fermentation is an anaerobic process.
However, many aerobic bacteria are capable of fermentation, and may do so even when oxygen is available. In this experiment, we will examine the capability of bacteria to ferment a variety of carbohydrates. We will also determine the end products of bacterial fermentation. Most bacteria produce organic acids as by-products of fermentation. Incorporation of a pH indicator into a medium allows detection of acidic fermentation products.