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Microbiology of Foods

Microbiology of Foods
Most spoilage bacteria grow at

acidic pH
any of the pH
alkaline pH
neutral pH

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

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

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Microbiology of Foods
NaCl can act as

synergistically if added in excess of optimum level
Both (a) and (b)
None of these
antagonist at optimal concentrations

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

coagulase activity
protease activity
catalase activity
none of these

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Microbiology of Foods
What are the intrinsic factors for the microbial growth?

Oxidation-Reduction Potential
All of these
Moisture
pH

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Microbiology of Foods
Yeast and mould count determination requires-

violet Red Bile agar
nutrient agar
acidified potato glucose agar
MacConkey agar

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