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 non-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 suitable selective medium.

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Microbiology of Foods
Which of the following is true about ISO 2002 method for Salmonella detection?

XLD is the first isolation medium rather than BGA
All of these
Rappaport Vassiliadis (RV) broth has been replaced by Rappaport Vassiliadis Soya (RVS) broth
Selenite cystine (SC) broth is replaced by Muller Kauffmann tetrathionate novobiocin broth (MKTTn)

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Microbiology of Foods
Which of the following is not true for the thermal resistance of the bacterial cells?

Cocci are usually more resistant than rods
Higher the optimal and maximal temperatures for growth, higher the resistance
Cells low in lipid content are harder to kill than other cells
Bacteria that clump considerably or form capsules are difficult to kill

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