PMID: 4376Feb 1, 1976

Activity of two Streptococcus mutans bacteriocins in the presence of saliva, levan, and dextran

Infection and Immunity
A L Delisle


The extracellular dextrans produced from sucrose by Streptococcus mutans strains BHT and GS-5 did not prevent the synthesis or release of active bacteriocins by these two strains. In addition, several streptococci that were genetically sensitive to these bacteriocins, and that could synthesize a variety of extracellular dextrans and levans from sucrose, remained phenotypically sensitive when grown in the presence of sucrose. Bacteriocin activity was not altered by treatment with high-molecular-weight dextran or by human saliva. The bacteriocins produced by, and active against, S. mutans thus appear to be capable of acting in vivo and may play a role in regulating the bacterial ecology of the oral cavity.


Jan 1, 1985·Microbiology and Immunology·T OoshimaT Iwanami
Apr 1, 1991·The Journal of Applied Bacteriology·S E TzannetisJ Papavassiliou
May 13, 2005·Journal of Medical Microbiology·Regianne Umeko KamiyaReginaldo Bruno Gonçalves
Jun 1, 2011·Probiotics and Antimicrobial Proteins·Adam Pepperney, Michael L Chikindas

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