“…Some of the most important ones include tannins from Terminalia arjuna (Chaudhari and Mengi, 2006), oleanolic acid from Anredra diffusa (Letts et al, 2006), polysaccharides from Opuntia ficus-indica (Trombetta et al, 2006), gentiopicroside, sweroside and swertiamarine from Gentiana lutea (Ozturk et al, 2006), shikonin derivatives (deoxyshikonin, acetyl shikonin, 3-hydroxy-isovaleryl shikonin and 5,8-Odimethyl acetyl shikonin) from Onosma argentatum (Ozgen et al, 2006), asiaticoside, asiatic acid, and madecassic acid from Centalla asiatica (Maquart et al, 1999;Shukla et al, 1999a,b;Hong et al, 2005), quercetin, isorhamnetin and kaempferol from Hippophae rhamnoides (Fu et al, 2005), curcumin from Curcuma longa (Jagetia and Rajanikant, 2004), oleo-resin from Copaifera langsdorffi (Paiva et al, 2002), proanthocyanidins and reseveratrol from grapes (Brakenhielm et al, 2001;Khanna et al, 2002), acylated iridoid glycosides from Scrophularia nodosa (Stevenson et al, 2002), phenolic acids (protocatechuic, p-hydroxybenzoic, p-coumaric, ferulic and vanillic acids) from Chromolaena odorata (Phan et al, 2001), glycoprotein fraction from Aloe vera (Choi et al, 2001), (+)-epi-alpha-bisabolol from Peperomia galioides (Villegas et al, 2001), fukinolic acid and cimicifugic acids from Cimicifuga sps. (Kusano et al, 2001) and xyloglucan from Tamarindus indicus (Burgalassi et al, 2000).…”