Page 158 - Color Atlas of Biochemistry

Energy Metabolism 149

A. Lactic acid and propionic acid fermentation

1. Propionate H H O 2. Lactobacillus 3.
H C C C
H H O
Propioni-
Sauerkraut Lactate H OH O bacterium

H C C C Streptococcus
Sour H H O
milk 10 µm
N A
2[H]
Yogurt 1
2[H]
N A
DNA Cell wall
H O O
B. Alcoholic fermentation H C C C

1 Lactate dehydrogenase 1. H O 2. 10 µm 3.
1.1.1.27 Pyruvate
Pyruvate decarboxylase
2
[TPP] 4.1.1.1
O 2
3 Alcohol dehydrogenase Yeast
[Zn 2 ] 1.1.1.1 CO C
2 (Saccharomyces
cerevisiae)
O
H O
Vacuole Septum Daughter cell
H C C Ethanal
H H (Acet-
aldehyde)
N A
3 Nucleus
Champagne N A

ER
H H
Cell wall
H C C OH
Tonoplast Mitochondrium
H H Ethanol

C. Beer brewing

CO
2

Germinate, Malt Grind, Wort Hops
dry incubate
in water O 2
Barley Fermentation

Starch Maltose

Amylases Amylases Yeast Glucose
formed in
Maltose Ethanol + CO
seedling 1. 2. 2 3.

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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