“…in the 70% acetone, 70% methanol and distilled water extracts of A. occidentale, 70% acetone and 70% methanol extracts of Oroxylum indicum, 70% ethanol and 70% methanol extracts of V. negundo, 70% acetone extracts of C. caudatus, Oenanthe javanica, Pluchea indica and S. pinnata and distilled water extract of Persicaria minor. Several phytochemical studies have indicated the presence of flavonoids in the leaf extracts of these species: A. occidentale (Arya et al, 1989), C. caudatus (Faridah et al, 2003), O. javanica (Miean and Mohamed, 2001;Ma et al, 2010), O. indicum (Subramanian and Nair, 1972), P. indica (Ohtsuki et al, 2008), P. minor (Urones et al, 1990), S. pinnata (Maisuthisakul et al, 2008) and V. negundo (Banerji et al, 1969;Basudeb et al, 1984).…”