MRS Agar is a medium used for the cultivation of Lactobacillus spp from food and beverages. It may also support the growth of Pediococcus and Leuconostoc species as well as other secondary bacteria. This medium complies with the recommendations of ISO 15214 and APHA.

Enzymatic digest of casein and meat extract provide amino acids, nitrogen, carbon, vitamins and minerals for organisms growth. Yeast extract is a source of vitamins, particularly of B-group. Ammonium citrate and sodium acetate are the selective agents effective against streptococci and moulds. The low pH is also inhibitory for most organisms other than lactobacilli. Magnesium and manganese sulfates are sources of ions and sulfate acting as growth stimulants. Dipotassium phosphate is the buffer. Glucose is the fermentable carbohydrate. Tween 80 is an emulsifier. Agar is the solidifying agent.

Learn more about MRS Agar

ref. 412320

6 bottles x 200 mL

10-25 °C storage temperature

2 years shelf life

Click here to view the full range of our media in tubes and bottles.