Abstract

SummaryForty-four strains of tributyrolytic group D streptococci isolated from Cheddar cheese were identified by physiological, biochemical and serological tests. They were also independently grouped using two-way paper chromatography in which patterns of ninhydrin positive spots were developed from 10% acetic acid extracts of the bacteria. The groupings obtained by the chromatographic and conventional techniques were then compared. Strains of Str. durans were well differentiated by chromatography from the other species of group D streptococci examined, but with the remainder less clear differentiation was obtained.

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