FSTC 326- Food bacteriology- Exam 4
correctly answered to pass
________ is an incomplete oxidation of sugars in the absence of oxygen using an internal organic
compound as an electron acceptor - correct answer ✔✔Fermentation
"fermentation" can also mean ________ - correct answer ✔✔"bioprocess"
fermentative metabolism yields how many ATP molecules per mole of glucose? - correct answer ✔✔1 or
2
much less than oxidative metabolism
homofermentative bacteria make only what acid - correct answer ✔✔lactic acid
heterofermentative bacteria make what acids? - correct answer ✔✔lactic, ethanol, carbon dioxide, and
acetic acid
how does starter cultures help fermentation? - correct answer ✔✔increase the speed and consistency of
fermentations
_______ carry the genes for many traits important to fermentations - correct answer ✔✔plasmids
vegetable fermentations rely on _______ - correct answer ✔✔indigenous microbiotas
Lactic Acid Bacteria (LAB) - correct answer ✔✔consume hexoses and pentoses anaerobically/
fermentatively
acetic acid bacteria - correct answer ✔✔capable of oxidizing ethanol to acetate/vinegar
, propriobacterium ferments into what and yields what products - correct answer ✔✔ferments in to CO2
and propionic acid
fermentation products: swiss cheese
asperigillus, lactobacillus, and streptococcus ferment in to what and yield what products? - correct
answer ✔✔ferment in to lactic acid
fermentation products: cheddar cheese. yogurt, soy sauce
Clostridium
Ferments into:
fermentation products: - correct answer ✔✔ferments in acetone and isopropanol
fermentation products: nail polish remover, rubbing alcohol.
saccharomyces
ferments in to:
fermentation products: - correct answer ✔✔ferments in to CO2 and ethanol
fermentation products: wine and beer
Escherichia acetobacter
ferments:
fermentation product: - correct answer ✔✔ferments: acetic acid
fermentation product: vinegar
How do you choose a fermentative starter culture? - correct answer ✔✔- single or mixed-organism
starters
- desired end product characteristics
- needs for primary and/or secondary fermentations
-characterisitcs of candidate starters like gene regulation, available substrates, etc
what bacteria are involved in dairy fermentation? - correct answer ✔✔lactobacilli
correctly answered to pass
________ is an incomplete oxidation of sugars in the absence of oxygen using an internal organic
compound as an electron acceptor - correct answer ✔✔Fermentation
"fermentation" can also mean ________ - correct answer ✔✔"bioprocess"
fermentative metabolism yields how many ATP molecules per mole of glucose? - correct answer ✔✔1 or
2
much less than oxidative metabolism
homofermentative bacteria make only what acid - correct answer ✔✔lactic acid
heterofermentative bacteria make what acids? - correct answer ✔✔lactic, ethanol, carbon dioxide, and
acetic acid
how does starter cultures help fermentation? - correct answer ✔✔increase the speed and consistency of
fermentations
_______ carry the genes for many traits important to fermentations - correct answer ✔✔plasmids
vegetable fermentations rely on _______ - correct answer ✔✔indigenous microbiotas
Lactic Acid Bacteria (LAB) - correct answer ✔✔consume hexoses and pentoses anaerobically/
fermentatively
acetic acid bacteria - correct answer ✔✔capable of oxidizing ethanol to acetate/vinegar
, propriobacterium ferments into what and yields what products - correct answer ✔✔ferments in to CO2
and propionic acid
fermentation products: swiss cheese
asperigillus, lactobacillus, and streptococcus ferment in to what and yield what products? - correct
answer ✔✔ferment in to lactic acid
fermentation products: cheddar cheese. yogurt, soy sauce
Clostridium
Ferments into:
fermentation products: - correct answer ✔✔ferments in acetone and isopropanol
fermentation products: nail polish remover, rubbing alcohol.
saccharomyces
ferments in to:
fermentation products: - correct answer ✔✔ferments in to CO2 and ethanol
fermentation products: wine and beer
Escherichia acetobacter
ferments:
fermentation product: - correct answer ✔✔ferments: acetic acid
fermentation product: vinegar
How do you choose a fermentative starter culture? - correct answer ✔✔- single or mixed-organism
starters
- desired end product characteristics
- needs for primary and/or secondary fermentations
-characterisitcs of candidate starters like gene regulation, available substrates, etc
what bacteria are involved in dairy fermentation? - correct answer ✔✔lactobacilli
