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Heated Canned Foods

Heated Canned Foods
The immediate source of the flat sour bacteria is usually the

starch
soil
sugar
plant equipment

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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

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

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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 strain(s), that grow in the jellies and candid fruits, are able to grow in sugar concentration upto 67.5%?

Citromyces
All of these
Penicillium
Aspergillus

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

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

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Heated Canned Foods
The ability of B. coagulans to grow in tomato juice depends upon the

the pH of the juice
number of spores present
the availability of oxygen
all of these

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