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Heated Canned Foods

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

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

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Heated Canned Foods
Which of the following(s) is/are porteolytic or putrefactive decomposing proteins with the production of malodorous compounds such as H2S, mercaptans, ammonia, indole and skatole?

C. butyricum
both (a) and (b)
C. sporogenes
C. putrifaciens

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Heated Canned Foods
Which of the following species can cause bitterness, acidity and curdling in canned milk, cream and evaporated milk?

Saccharomyces
Clostridium
Bacillus
both (a) and (b)

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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
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
Canned sweetened condensed milk may become thickened by

Clostridium species
Micrococcus species
Bacillus species
Saccharomyces species

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