The Dehydrogenation of Alcohols by Streptococci of Group B

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Abstract
Resting cell suspensions of Streptococcus mastitidis, Lancefield Group B, oxidize a number of alcohols, as indicated by methylene blue reduction in Thunberg tubes. Several of the alcohols, including the normal alcohols C2 to C5, secondary alcohols from C3 to C5, tertiary amyl alcohol, and 2,3 butylene glycol, are more active as H donors to methylene blue than is glucose. Methyl alcohol is not activated by these organisms. Glycerol is dehydrogenated rapidly by some strains, but the factors contributing to its dehydrogenation are not completely elucidated. An adaptive mechanism is present in some strains for the dehydrogenation of certain sugars, as, for example, galactose. A strain of Escherichia coli, studied for comparative purposes, was found to de-hydrogenate alcohols very slowly. This observation is in agreement with the results of Quastel and Whetham.

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