Abstract
Three Gram-positive, catalase-negative, motile, rod-shaped strains, designated L486, L489(T) and L499, were isolated from fermenting cocoa. These organisms produced DL-lactic acid from glucose without gas formation. Ammonia was not produced from arginine. Acid was produced from amygdalin, D-cellobiose, aesculin, D-fructose, D-glucose, D-galactose, D-mannitol, D-mannose, N-acetylglucosamine, L-rhamnose, sucrose, salicin and D-trehalose. The cell walls contained peptidoglycan of the d-meso-diaminopimelic acid type. A 16S rRNA gene sequence analysis revealed that the isolates belong phylogenetically to the genus Lactobacillus and are closely related to Lactobacillus nagelii, Lactobacillus vini and Lactobacillus satsumensis. Low DNA-DNA reassociation values were obtained between the isolates and the phylogenetically closest neighbours. On the basis of the genetic and phenotypic results, the isolates are considered to represent a novel species, for which the name Lactobacillus ghanensis is proposed. The type strain is L489(T) (=DSM 18630(T)=CCUG 53453(T)).
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