Microbiology of Foods
NaCl can act as

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

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Microbiology of Foods
Plate count of bacteria in foods generally use the plating medium consisting of

peptone, glucose, sodium chloride, agar and distilled water
yeast extract, glucose, sodium chloride, agar and distilled water
peptone, yeast extract, glucose, sodium chloride and distilled water
peptone, yeast extract, glucose, sodium chloride, agar and distilled water

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Microbiology of Foods
Examination of the presence / absence of organisms refers to

None of these
incubation of a food suspension in an enrichment medium
incubation of a food suspension in an enrichment medium followed by inoculation on to a non-selective medium.
incubation of a food suspension in an enrichment medium followed by inoculation on to a suitable selective medium.

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