VP MEDIUM FOR LISTERIA (ISO 11290-2-2017)

Methyl Red and Voges-Proskauer test are among the two various tests used in the biochemical identification of bacterial species. These tests were originally studied by Voges, Proskauer and subsequently by Clark and Lubs to differentiate between members of the coli- aerogens group. Both the tests are based on the detection of specific breakdown products of carbohydrate metabolism. This medium is specified by ISO for the differentiation of Listeria species from other bacteria based on VP Test from food and animal feeds, environmental samples in the area of food production and food handling.

recommended for the distinction of Listeria species from other species based on Voges-Proskauer test from food samples