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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

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

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

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

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Heated Canned Foods
Canned poultry is more often spoiled by

Micrococcus species
Saccharolytic Clostridia than by putrefactive
putrefactive than by Saccharolytic Clostridia
Saccharomyces species

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Heated Canned Foods
Canned sweetened condensed milk may become thickened by

Bacillus species
Micrococcus species
Clostridium species
Saccharomyces species

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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

>4.5
<4.5
<5.3
>5.3

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