Question

57. Destinguish between lactic acid and alcoholic fermentation?
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Answer 1

Answer:

Therefore, both lactic acid and alcoholic fermentation do not require oxygen. The main difference between lactic acid and alcoholic fermentation is that lactic acid fermentation produces lactic acid molecules from pyruvate whereas alcoholic fermentation produces ethyl alcohol and carbon dioxide.

Answer 2

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The two most common types of fermentation are alcoholic and lactic acid fermentation. While alcoholic fermentation may be the most well-known (and is seen in many foods and beverages, such as wine, beer, fermented teas, bread and sausages), lactic acid fermentation is thought to be the oldest; fermented foods, such as cheese, yogurt, kefir, sauerkraut and pickled foods have been found in almost every culture all over the world, going back thousands of years.

To compare and contrast lactic acid fermentation and alcoholic fermentation, both are oxidation-reduction reactions and involve glycolysis. Alcohol fermentation occurs in micro-organisms such as yeast and converts glucose to energy, which is released as carbon dioxide. The resultant by-product is called ethanol (also known as ethyl alcohol or simply alcohol). Lactic acid fermentation occurs in certain bacteria, yeast and muscle cells and converts glucose to energy. Its by-product is lactate. Lactic acid fermentation is also used in the food industry, which uses lactic acid bacteria.