Microbiology of Foods
The microbiological examination of coliform bacteria in foods preferably use

eosine Methylene blue agar
violet Red Bile agar
MacConkey broth
all of these

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Microbiology of Foods
Enumeration of microorganism refers to

non-selective plating, depending on the test
None of these
either spiral plating, pour plate or spread plate of a food suspension on to a suitable selective agar
either spiral plating, pour plate or spread plate of a food suspension on to a suitable selective agar, or non-selective plate, depending on the test

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

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

Bacteria that clump considerably or form capsules are difficult to kill
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

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

Rappaport Vassiliadis (RV) broth has been replaced by Rappaport Vassiliadis Soya (RVS) broth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)
XLD is the first isolation medium rather than BGA
All of these

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