TITLE:
Effect of a Commercial Extract of Green Tea and a Pure Catechin on Two Veillonella strains
AUTHORS:
Jorge A. Yáñez-Santos, Vianey Lino-Aguilar, Elsa I. Castañeda-Roldan, Jorge Giron, Lilia Cedillo
KEYWORDS:
Veillonella Parvulla, Chlorhexidine, Green Tea, Catechin
JOURNAL NAME:
Advances in Microbiology,
Vol.14 No.6,
June
19,
2024
ABSTRACT: 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.