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Yeast Fermentation Diagram

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Different Types of Fermentation - Compare and Contrast

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Different Types of Fermentation - Compare and Contrast

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The two most common types of fermentation are Lactic Acid Fermentation and Ethanol Fermentation. They are similar because they both release energy in the absence of oxygen. Both also involve the breakdown of pyruvate, and the reduction of a molecule by NADH. Both types also make some kind of food or drink for people. They are different in the aspect that Lactic Acid Fermentation creates lactate, and Ethanol Fermentation creates ethanol. In Lactic Acid Fermentation, pyruvate is DIRECTLY reduced by NADH to create lactase, and in Ethanol Fermentation, pyruvate is made into acetaldehyde, which is then reduced by NADH to produce ethanol. Lastly, Ethanol Fermentation is used by humans to create alcoholic drinks like beer and wine, as well as bread, while Lactic Acid Fermentation is used to produce cheese and yogurt.

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Alcohol or ethanol fermentation, including yeast and its role in bread and wine production.

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4 different tubes were each filled with glucose solution, sucrose solution, starch solution, and distilled water. Next, yeast was added to each of these tubes, and then another tube placed on top. To measure the initial gas height, we marked where the air bubble in the tube was. The tubes were then placed in an incubator and after 30 minutes, the final gas height was measured.

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C₆H₁₂O₆ → 2 C₂H₅OH + 2 CO2

+ 2 ATP