1887

Abstract

Summary

A medium based upon tryptone, yeast extract, cystine (TYC) agar and incorporating bacitracin and sucrose has been evaluated for selective isolation of The effect of varying the concentrations of sucrose and bacitracin on the recovery of two standard strains was investigated. Growth of NCTC 10449 was significantly inhibited by increasing concentrations of sucrose but was not affected by bacitracin; the reverse was seen with strain 6715. The best compromise between recovery of the streptococci and growth of other organisms was obtained with a final sucrose concentration of 20% and bacitracin 0.2 units/ml. In comparison with three other selective media, this medium gave the highest recovery rate of standard strains, indicating that it is superior to mitis-salivarius bacitracin (MSB) agar for the recovery of from saliva.

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/content/journal/jmm/10.1099/00222615-22-4-319
1986-12-01
2022-11-27
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