ETHNOPHARMACOLOGICAL STUDY AND PHYTOCHEMICAL SCREENING OF THREE PLANTS (ASTERACEAE FAMILY) FROM THE REGION OF SOUTH WEST ALGERIA

Nvillea Radiata, Cotula Cinerea and Matricaria Pubescens are plants belonging to Asteraceae family, they are commonly used in traditional medicine in south west of Algeria (northern Sahara), for the treatment of several diseases.The aqueous extracts of the aerial parts (leaves and stems) of these plants were subjected to phytochemical screening tests to demonstrate theexistence of natural products (alkaloids, saponins, flavonoids, terpens ... etc.) the secondary metabolisms of these may have pharmacological and therapeutic properties. Keywords: Anvillea Radiata, Cotula Cinerea et Matricaria Pubescens