xmlui.ArtifactBrowser.SimpleSearch.filter.source:Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 17/2011
ISSN:1211-5541
Abstract:
The present study describes the antimicrobial activity of various natural
substances against group G streptococci. A total of 50 strains of group G
streptococci was included in this study. The minimum bactericidal concentrations
of 6 substances — anethole, eugenol, guaiazulene, carvacrol, cinnamon bark oil
from Cinnamomum zeylanicum and thymol were obtained by the broth
microdilution method. The substances were extended either directly in brain heart
infusion broth or in 24 % ethanol. Carvacrol was found to be the most effective
substance with the highest antimicrobial activity, which inhibited the growth of 90
% of group G streptococci strains at the concentration of 236.7 :g ml–1. The
minimum bactericidal concentrations of eugenol, oil from the bark of
Cinnamomum zeylanicum, and thymol were 1000 :g ml–1. Anethole and
guaiazulene were the least effective natural substances in our study.
