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

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

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

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
peptone, glucose, sodium chloride, agar and distilled water

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