Lactic Acid Fermentation First step is ____ Pyruvic acid is converted to _____ M
ID: 95942 • Letter: L
Question
Lactic Acid Fermentation First step is ____ Pyruvic acid is converted to _____ Microbes that only produce lactic acid are called _____ microbes Ex. Streptococcus and Lactobacillus Produces yogurt, cheese, sauerkraut, pickles Alcohol Fermentation First step is _____ Pyruvic acid is converted to 2 ethanol and 2 CO_2 Microbes that can produce alcohol and lactic acid microbes are _____ microbes (E.coli and Enterobacter) Ex. Saccharomyces cerevisiae (yeast) Ethanol makes alcoholic beverages and CO_2 makes breadExplanation / Answer
Lactic acid fermentation:
1. In the first step glucose is converted to two molecules of pyruvic acid.
2. Pyruvic acid is converted lactic acid.
3. The microbes that only produce lactic acid are called lactic acid bacteria (lactobacillales).
4. Lactic acid is used in the production of foods like yogurt, cheese, sauekraut, sausage etc.
Ethanol fermentation:
1. In the first step glucose molecule is broken down into two molecules of pyruvic acid.
2. The pyruvic acid is converted into acetaldehyde. This is catalyzed by pyruvate dehydrogenase.
3. The acetaldehyde is converted alcohol. This is catalyzed by alcohol dehydrogenase.
4. The microbes that produce alcohol and lactic acid are called anaerobic bacteria.
5. Ethanol makes alcohol beverages and CO2 makes bread spongy.
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