FOOD MICROBIOLOGY
MICROORGANISMS IN FOOD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Alkaline peptone water
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Loeffler serum slope
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Deoxycholate citrate agar
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Mac Conkey’s agar
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Detailed explanation-1: -Alkaline peptone water is an enrichment medium used for Vibrio cholerae and other Vibrio The pH of the medium ranges from 8.6-9.0. The alkalinity of the medium favors the growth and multiplication of Vibrio species while inhibiting the growth of faecal coliforms and other commensals.
Detailed explanation-2: -Enrichment medium is general purpose enrichment agar which can nourish and support the growth of gram-positive as well as gram-negative bacteria. It can also be supplemented with blood for enriched growth or study the haemolysis.
Detailed explanation-3: -Alkaline Peptone Water is recommended for the enrichment and isolation of Vibrio cholerae and Vibrio species. The growth of a broad spectrum of Vibrio sp. is promoted by peptones, a sodium chloride concentration of 10 g/liter, and a high pH of 8.5.