Tetrazolium Reduction as a Means of DifferentiatingA Streptococcus faecalis from Streptococcus faecium
- 1 February 1956
- journal article
- research article
- Published by Microbiology Society in Journal of General Microbiology
- Vol. 14 (1), 57-68
- https://doi.org/10.1099/00221287-14-1-57
Abstract
The amount of tetrazolium (2,3,5-triphenyltetrazolium chloride) reduced by strains of Lancefield group D streptococci was estimated by measuring colorimetrically the formazan produced. S. faecalis caused 80% reduction, S. faecium only 45%, and S. bovis and S. durans little or none. Sixty-eight fresh strains were readily differentiated by this method. Glucose nutrient agar containing tetrazolium was used to distinguish colonies of S. faecalis (deep red) from those of S. faecium (colorless).Keywords
This publication has 3 references indexed in Scilit:
- Studies in the Differentiation between Human and Animal Pollution by means of Faecal StreptococciJournal of General Microbiology, 1955
- The Serological Typing of Group D Streptococci associated with Outbreaks of Neonatal DiarrhoeaJournal of General Microbiology, 1952
- The direct colorimetric estimation of reducing sugars and other reducing substances with tetrazolium saltsBiochemical Journal, 1951