Bromothymol blue and carbohydrate-sensitive plating media.

@article{DuPree1977BromothymolBA,
  title={Bromothymol blue and carbohydrate-sensitive plating media.},
  author={M R DuPree and Gregory Wilcox},
  journal={Journal of clinical microbiology},
  year={1977},
  volume={6 4},
  pages={343-7}
}
A new plating medium using bromothymol blue (BTB) indicator is described and compared with eosin-methylene blue (EMB), MacConkey, and Endo media. These media were tested with L-arabinose by plating fermenting and nonfermenting mutant strains of Escherichia coli. The minimum concentrations of L-arabinose that permitted differentiation of these strains were determined. Different concentrations were required for differentiating confluent patches of cells, isolated colonies, and closely spaced or… CONTINUE READING

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