Antimicrobial activity of the ethanolic extract of Guettarda sericeaagainst oral streptococci

Background The genus Guettarda (Rubiaceae) comprises plants widely distributed in tropical areas [1]. Regarding the Guettarda sericea species, the literature shows that there is a lack of botanical and phytochemicals studies [2]. Thus, the present study aimed to evaluate the antibacterial effect of ethanol extract of leaves of G. sericea (EEFGS) on the growth of Streptococcus oralis ATCC 10557 and S. salivarius ATCC 7073 in both the planktonic and biofilms states.