HEATED CANNED FOODS QUIZ

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. putrifaciens

both (a) and (b)

C. butyricum

C. sporogenes

TRUE ANSWER : ?
YOUR ANSWER : ?

The putrifactive anaerobes grow best in the

any of these

low acid canned foods

medium acid canned foods

high acid canned foods

TRUE ANSWER : ?
YOUR ANSWER : ?

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

number of spores present

the pH of the juice

the availability of oxygen

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The immediate source of the flat sour bacteria is usually the

plant equipment

sugar

starch

soil

TRUE ANSWER : ?
YOUR ANSWER : ?

Flat sour spoilage of acid foods is caused by

B. stearothermophillus

both (a) and (b)

B. pepo

B. coagulans

TRUE ANSWER : ?
YOUR ANSWER : ?

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

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Saccharomyces

both (a) and (b)

Clostridium

Bacillus

TRUE ANSWER : ?
YOUR ANSWER : ?

Sulfur stinker spoilage, caused by is uncommonly found in

low acid foods

medium acid foods

high acid foods

any of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Canned meat and fish exhibit spoilage by

Bacillus species

Clostridium species

Saccharomyces

both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

The butyric acid type of fermentation in acid or medium acid foods, with swelling of the container by the carbon dioxide and hydrogen gas is caused by

C. sporogenes

both (a) and (b)

C. pasteurianum

C. butyricum

TRUE ANSWER : ?
YOUR ANSWER : ?

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