Thirty-four strains of Gardnerella vaginalis were studied. They were isolated from non specific vaginitis. A presumptive identification can be based on colonial morphology, Gram stain characteristics, negative catalase and oxidase test. The differentiation of Gardnerella vaginalis from other negative catalase coccobacilli is based on the acid formation of carbohydrates, enzymatic test, analysis of short chain volatile and non volatile end products of fermentation in GLC. All Gardnerella strains produce acid from glucose, maltose, starch and are hippurate and alpha glucosidase positive. They are sulfonamide resistant, acetic, lactic and succinic acids are detected by gas liquid chromatography.
Actinomyces Bifidobacterium