Medicinal foodstuffs. XXVIII. Inhibition of nitric oxide production and new sesquiterpenes, zedoarofuran, 4-epicurcumenol, neocurcumenol, gajutsulactone A and B, and zedoarolides A from Zedoariae rhizome - Matsuda,H.; Morikawa,T.; Toguchida,I. (Chem Pham Bull, 2001)