Antitermitic and antioxidant activities of heartwood extracts and main flavonoids of Hymenaea stigonocarpa Mart.

► We describe the antitermitic and antioxidant activities of Hymenaea stigonocarpa. ► We isolated flavonoids: hultenin, taxifolin, quercetin and 7-methoxycathequin. ► The flavonoids were elucidated on the basis of NMR spectral analyses. ► The activities decreases: extract > quercetin > 7-methoxycathequin > taxifolin > hultenin. ► The extractives give the H. stigonocarpa heartwood natural resistance.