Use of Fusidic Acid for Differentiating Homofermentative from Heterofermentative Lactobacilli
W. SIMS 1
1 Department of Pathology, Royal Dental Hospital, London, England
A method was developed for differentiating homofermentative and heterofermentative lactobacilli in large numbers, using a modified MRS medium with fusidic acid, 10 µg/ml. This was the lowest concentration of the antibiotic selective for homofermenters. In saliva, an increase in lactobacilli was accompanied by a concomitant increase in the proportion of heterofermenters.
Submitted on June 30, 1967
