Abstract
SUMMARY: The modified Rogosa media (acetate broth and acetate agar) developed by Mabbitt & Zielinska (1956) have been compared with tomato juice media for the growth of representative Lactobacillus species.Most of the species tested grew markedly better in acetate broth than in tomato dextrose broth, but some cultures did not grow well in the acetate broth although they grew normally in tomato dextrose broth. The acetate agar was satisfactory for counting those lactobacilli cultured at 30° but was inferior to tomato dextrose agar for counting those grown at 37°.

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