Kanamycin Esculin Azide HiVegâ„¢ Agar is recommended for selective isolation and identification of group D Streptococci in foodstuffs. Kanamycin sulphate and sodium azide acts as selective inhibitor. Esculin and ferric ammonium citrate together acts as indicator system. This medium is prepared by replacing animal peptones with vegetable defined peptones to avoid BSE/TSE/GMO risk.