HEATED CANNED FOODS QUIZ

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

Bacillus

both (a) and (b)

Clostridium

Saccharomyces

TRUE ANSWER : ?
YOUR ANSWER : ?

Canned sweetened condensed milk may become thickened by

Clostridium species

Saccharomyces species

Micrococcus species

Bacillus species

TRUE ANSWER : ?
YOUR ANSWER : ?

The most important kind of chemical spoilage of canned foods is the hydrogen swell which is favored by

increasing temperature of storage

imperfection in the tinning and lacquering

increasing acidities of foods

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

the pH of the juice

the availability of oxygen

all of these

number of spores present

TRUE ANSWER : ?
YOUR ANSWER : ?

The putrifactive anaerobes grow best in the

low acid canned foods

high acid canned foods

medium acid canned foods

any of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

putrefaction

TA spoilage

both (a) and (b)

flat sour spoilage

TRUE ANSWER : ?
YOUR ANSWER : ?

Flat sour spoilage of acid foods is caused by

B. pepo

B. coagulans

both (a) and (b)

B. stearothermophillus

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Penicillium

Citromyces

Aspergillus

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

>5.3

<5.3

>4.5

TRUE ANSWER : ?
YOUR ANSWER : ?

The immediate source of the flat sour bacteria is usually the

plant equipment

sugar

starch

soil

TRUE ANSWER : ?
YOUR ANSWER : ?

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