%0 Journal Article %T Effect of a Commercial Extract of Green Tea and a Pure Catechin on Two Veillonella strains %A Jorge A. Yá %A ñ %A ez-Santos %A Vianey Lino-Aguilar %A Elsa I. Castañ %A eda-Roldan %A Jorge Giron %A Lilia Cedillo %J Advances in Microbiology %P 340-350 %@ 2165-3410 %D 2024 %I Scientific Research Publishing %R 10.4236/aim.2024.146025 %X Abstract: The catechin Epigallocatechin-3-O-Gallate (EGCG) which is found in of Green Tea extracts (GTE), displays a variety of microbicidal properties. It is largely believed that EGCG inhibits the growth of cariogenic and periodontopathic bacteria. Objective: In this paper we compared the inhibitory activity of EGCG and a commercial GTE on the growth of Veillonella parvula. Chlorhexidine was used as positive control. Methodology: V. parvula ATCC 10790 and a clinical isolate obtained from a periodontal disease patient were cultured in the presence of EGCG or a commercial GTE, and the measurements of bacterial growth inhibition were compared to the values obtained with 0.12 and 0.2% chlorhexidine. Results: Chlorhexidine inhibited bacterial growth, however in contrast to a previous report, neither EGCG nor the GTE showed any effect on bacterial growth. Conclusions: The data show and confirm that chlorhexidine is a growth inhibitor of V. parvula while EGCG and GTE do not display such effect. %K Veillonella Parvulla %K Chlorhexidine %K Green Tea %K Catechin %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=133856