Carbohydrate Consumption HiVeg™ Broth Base is recommended for cultivation and differentiation of Listeria species. Similar medium is also recommended by FDA and ISO different iconcentration of Bromocresol purple. Differentiation is based on fermentation of glucose, xylose, rhamnose, ribose, a-methyl-D-mannoside and mannitol. Proteose peptone and meat extract B in the medium provide carbon and nitrogen compounds including essential amino acids, vitamins and trace ingredients for bacterial metabolism. Bromocresol purple is the pH indicator, which changes colour of medium to yellowdue to acid production by turning yellow in colour. This medium is prepared by replacing animal peptones with vegetable defined peptones to avoid BSE/TSE/GMO risk.