Fermentation
- Created by: Jelena
- Created on: 07-04-13 00:02
View mindmap
- Alcohol Fermentation
- Occurs in yeasts, bacteria
- Glucose --> pyruvate --> acetaldehyde + carbon dioxide --> ethanol
- Ethanol is the source of alcohol in beer and wine
- Alcohol dehydrogenase is a very important enzyme!
- Converts aceyaldehyde to ethanol (waste product)
- Recycles NAD+
- Glucose --> pyruvate --> acetaldehyde + carbon dioxide --> ethanol
- Lactic Fermentation
- Occurs when no oxygen
- Like when you're exercising and the muscle cells are depleted of oxygen
- Only 1 step! Pyruvate is broken to lactic acid! Energy is released!
- NADH give up its electrons to form NAD+
- Glucose --> pyruvate --> lactic acid + energy
- Replaces aerobic respiration so cells have a source of energy
- However, this is temporary! Cells need oxygen for sustained activity
- Lactic acid = pain
- Yogurt
- Yogurt produced through fermentation of milk
- Primary bacteria are Lactobacillusbulgaricus and streptococcusthermophiles
- Bacteria produce lactic acid in the milk --> decrease pH --> cause it to congeal and give it its flavour
- Sauerkraut
- Lactic acid fermentation used to make sauerkraut
- Bacteria is genus Leuconotoc
- Occurs when no oxygen
Comments
No comments have yet been made