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Microbiology of Foods

Microbiology of Foods
Most spoilage bacteria grow at

neutral pH
acidic pH
alkaline pH
any of the pH

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Microbiology of Foods
The time temperature combination for HTST paterurization of 71.1°C for 15 sec is selected on the basis of

B. subtilis
Coxiella Burnetii
E. coli
C. botulinum

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Microbiology of Foods
The different ACC's between food categories reflect the

expected level of contamination of the raw material
All of these
potential for microbial growth during storage
potential shelf life

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Microbiology of Foods
Which of the following acid will have higher bacteriostatic effect at a given pH?

Citric acid
Maleic acid
Acetic acid
Tartaric acid

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Microbiology of Foods
Suspected colonies of Staphylococcus aureus when grown on Baird-Parker medium shall show

coagulase activity
catalase activity
none of these
protease activity

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Microbiology of Foods
A psychrophilic halophile would be a microbe that prefers

warm temperatures and increased amounts of acid
cold temperatures and the absence of oxygen
cold temperatures and increased amounts of salt
warm temperatures and increased amounts of pressure

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