fermentation selected slides - pgia.ac.lk · alcoholic fermentation alcoholic fermentation of...
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FERMENTATIONSelected slides
FT 5105 Food Microbiology
FT 5105 Food Microbiology 2
FT 5105 Food Microbiology 3
Alcoholic Fermentation
Alcoholic fermentation of glucose
C6H12O6 → 2 C2H5OH + 2 CO2glucose ethanol carbon dioxide
Glucose Glycolysis Pyruvic Acid
AcetaldehydeEthyl Alcohol
CO2
ATPATP
NADHNADH
NAD+
NAD+
Lactic Acid Fermentation
Fermenters
FT 5105 Food Microbiology 6
FT 5105 Food Microbiology 7
FT 5105 Food Microbiology 8
Industrial Fermentation Process
FT 5105 Food Microbiology 9
FT 5105 Food Microbiology 10
FT 5105 Food Microbiology 11
FT 5105 Food Microbiology 12
Culture Action Diary Product
L. delbrueckii bulgaricus
Acid and flavor Bulgarian butter milk
L. Acidophilus Acid Acidophilus milk
Leuconostoc cremoris
Flavor Cultured buttermilk, sour cream, cottage cheese
S. lactis diacetylactis
Acid and flavor Sour cream, buttermilk
L. lactis and bulgaricus and yeast
Acid and alcohol Kefir & Kumiss
S. faecalis Acid and flavor Swiss and Cheddar cheese
FT 5105 Food Microbiology 14Mashing vessels
FT 5105 Food Microbiology 15
Lauter Tun
FT 5105 Food Microbiology 16
Hops
FT 5105 Food Microbiology 17
Fermentation tanks
FT 5105 Food Microbiology 18Beer production process flow diagram
FT 5105 Food Microbiology 19
Beer production process
FT 5105 Food Microbiology 20
A
B
C
DE
F
A-B - Germicidal actionB-C - S. lactisC-D - LactobacillusD-E - molds (oxidize
acids) + yeasts (produce NH3)
E-F - Proteolytic spore former bac.
Aci
dit
y %
Time
Sequence of changes in raw milk in relation to acid concentration
FT 5105 Food Microbiology 21
Aci
dit
y %
Time (days)
Sequence of acid fermentation in sauerkraut production
L. mesenteroides
L.curcumeris
L. Pentoaceticus & L. plantarum