The crude ethanol extract from the leaves of Tovomitopsis psychotriifo
lia (Clusiaceae) exhibits antibacterial activity against Bacillus cere
us, Staphylococcus aureus, and Pseudomonas aeruginosa. The biologicall
y active agent in the extract has been isolated by chromatographic tec
hniques and identified by NMR spectroscopy as trans-delta-tocotrienolo
ic acid.