Antimicrobial Activity of Tannins from<i>Terminalia citrina</i>

Isolation of the fruit CH3OH extract of Terminalia citrina yielded five known tannins identified as corilagin (1) (3), punicalagin (2) (4), 1,3,6-tri-O-galloyl-beta-D-glucopyranose (3) (5), chebulagic acid (4) (6), and 1,2,3,4,6-penta-O-galloyl-beta-D-glucopyranose (5) (7) by comparison of their physical and spectral data with those of authentic samples. These tannins were tested for antimicrobial action.