Yersinia Isolation HiVeg™ Agar is recommended for selective isolation of Yersinia species from food. It is relatively sensitive to acidic conditions; therefore acid foods and fermented products should be analyzed promptly. Neutral red acts as the pH indicator. High amount of sodium deoxycholate and bile inhibit Enterobacteriaceae but not Y.enterocolitica. Brilliant green and sodium citrate suppresses growth of accompanying gram-positive bacteria. Yersinia enterocolitica grows luxuriantlly. This medium is prepared by replacing animal peptones with vegetable defined peptones to avoid BSE/TSE/GMO risk.