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Heated Canned Foods

Heated Canned Foods
Flat sour spoilage of acid foods is caused by

B. coagulans
both (a) and (b)
B. pepo
B. stearothermophillus

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Heated Canned Foods
Canned meat and fish exhibit spoilage by

Clostridium species
Bacillus species
Saccharomyces
both (a) and (b)

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Heated Canned Foods
High acid foods with a pH < 3.7 undergo spoilage by

both (a) and (b)
do not undergo spoilage by microorganisms
B. coagulans
Saccharolytic anaerobe

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Heated Canned Foods
The most important kind of chemical spoilage of canned foods is the hydrogen swell which is favored by

increasing temperature of storage
all of these
imperfection in the tinning and lacquering
increasing acidities of foods

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Heated Canned Foods
The presence of viable non-spore forming bacteria in heat process canned foods indicates leakage of the container. Which of the following is responsible for the spoilage of leaky cans?

High sugar content
Plant equipment
Cooling water
Highly acidic medium

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Heated Canned Foods
High acid foods with a pH above 5.3 are especially subjected to

both (a) and (b)
TA spoilage
putrefaction
flat sour spoilage

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