Production of bacteriocins in a liquid medium by Streptococcus mutans.

  title={Production of bacteriocins in a liquid medium by Streptococcus mutans.},
  author={Allan L. Delisle},
  journal={Antimicrobial agents and chemotherapy},
  volume={8 6},
A sterile-filtered, liquid medium composed of one-half-strength APT broth and 4% (wt/vol) yeast extract was found to support the production of bacteriocins by Streptococcus mutans strains BHT and GS-5. Culture supernatants, adjusted to pH 7.0 and sterilized by filtration, contained bacteriocin-like activity, which could be demonstrated by spotting dilutions onto top agar lawns seeded with Streptococcus pyogenes as the sensitive indicator and by adding dilutions to log-phase indicator broth… CONTINUE READING

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