Open AccessBacteriological Study of salivaricin production from treptococcus salivarius isolated from the oral cavity
Author(s) -
Ibtihal AbdulHadi Majeed,
Abdulkareem A. Al-Kazaz,
Moayad Sabri,
Sahar Abdul-Wahab
Publication year - 2010
Publication title -
maǧallaẗ markaz buḥūṯ al-taqniyyaẗ al-aḥyāʾiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2708-1370
pISSN - 1815-1140
DOI - 10.24126/jobrc.2010.4.1.87
Subject(s) - streptococcus salivarius , microbiology and biotechnology , bacteria , serotype , streptococcus pyogenes , biology , gram , gram positive bacteria , streptococcus , antibiotics , staphylococcus aureus , genetics
A total of 115 samples (oral cavity swabs) were collected from healthy individuals. Sixty eight isolates were identified as Streptococcus salivarius using microscopical, biochemical and serotyping tests. The ability of Streptococcus salivarius local isolates to produce salivaricin was detected by testing the inhibitory activity against gram positive bacteria and gram negative bacteria. Results showed that only 26 isolates were capable of producing salivaricin and showed inhibitory activity against some gram positive isolates especially S. pyogenes, while no inhibitory effect was noticed towards the gram negative isolates that were used in this study. S. salivarius IS9 was selected according to its efficiency of inhibiting activity against a number of tested bacteria.The results of determination of antagonistic effect of IS9 against all local isolates of S. salivarius showed that 45 isolates of them were affected, while 23 isolates were not affected.