Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
Is botulism a greater danger in spoilage of canned goods under thermophilic or under mesophilic conditions?
|
Thermophilic
|
|
Canned foods are usually in metal cans. What sorts of containers are used for aseptically packaged foods?
|
Some sort of material that cannot tolerate conventional heat treatment (laminated paper or plastic)
|
|
Roquefort and blue cheeses are characterized by blue-green clumps. What are these?
|
Penicillium molds
|
|
Are bioreactors designed to operate aerobically or anaerobically?
|
aerobic?
|
|
Penicillin is produced in its greatest quantities during the trophophase of fermentation. Does that make it a primary or secondary metabolite?
|
Secondary metabolite
|
|
At one time, citric acid was extracted on an industrial scale from lemons and other citrus fruits. What organism is used to produce it today?
|
The mold Aspergillus niger, using molasses as a substrate
|
|
Landfills are the site of a major form of bioconversion—what is the product?
|
Main product: Methane
Bioconversion: converting biomass into alternative energy sources. |
|
How can microbes provide fuels for cars and electricity?
|
Produce ethanol from cellulose;
Algal oil made into biodiesel fuel and possibly jet fuel; Hydrogen splitting to generate energy; potential for bacteria or algae to produce hydrogen from the fermentation of various waste products. |