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Heated Canned Foods

Heated Canned Foods
Acid foods with a pH between 4.5 and 3.7 usually are spoiled by

Saccharolytic anaerobe
B. coagulans
both (a) and (b)
none of these

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Heated Canned Foods
The canned acid foods such as pineapple, tomatoes and pears have been found spoiled by C. pasteurianum. Such spoilage is more likely when the pH of the food is

<5.3
>4.5
<4.5
>5.3

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Heated Canned Foods
The putrifactive anaerobes grow best in the

any of these
low acid canned foods
medium acid canned foods
high acid canned foods

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

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

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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?

Highly acidic medium
Plant equipment
Cooling water
High sugar content

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Heated Canned Foods
Canned meat and fish exhibit spoilage by

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

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