LACTOBACILLUS HETEROFERM SCREEN AGAR (MRS AGAR, MODIFIED)

Mayonnise, cooked starch-based dressings resembling mayonnise and pourable dressings are the types of salad dressings available. Microorganisms in salad dressings come from the ingredients from manufacturing equipments and from air. The microflora causing salad dressing to spoil seems quite restricted and consists of few species of Lactobacillus, Saccharomyces and Zygosaccharomyces.
MRS Agar, Modified (Lactobacillus Heteroferm Screen Agar) recommended by APHA, is used for the isolation and cultivation of Lactobacillus species from salad dressings. MRS Agar, Modified is the modification of MRS medium of deMan et al.

for isolation and cultivation of Lactobacillus species from foods