Onosma Bracteatum: A Research Of Phytochemist...

Onosma Bracteatum: A Research Of Phytochemistry And Ethanopharmacology

Author Name : Miss. Shradha Rajendra Gadhave, Mr. Rokade.V.G, Dr Hingane.L.D.

ABSTRACT

Onosma bracteatum is species of flowering plant in the family boraginaceae.O. bracteatum is a key ingredient in a number of Unani and Ayurvedic formulations to treat number of disorders regarding human health. The genus Onosma L. includes about 150 species distributed world-wide in which only about 75 plants has been described for its morphology and less than 10 plants for their chemical constituents. O. bracteatum include a variety of glycosides, flavonoids, tannins, phenolic compounds and carbohydrates, other potential components are ketones, alkaloids, lipids, naphthoquinones, naphthazarins and flavones like shikonins and onosmins. The leaves, flowers and seeds of this plant are acrid, cooling and has been reported to be used in the treatment of asthma, bronchitis, stomatitis, throat troubles, diseases of the chest and lungs, ophthalmic, gingivitis, insanity, gonorrhea, leprosy, allay thirst. It is also useful in relieving functional palpitation of the heart, irritation of the stomach and bladder. The plants are also equally use in eye, blood diseases, bronchitis, abdominal pain, stangury, itch, lecoderma, fever, wounds, burns, piles and urinary calculi. The roots are used for coloring food stuffs, oils and dying wool and in medicinal preparations. The purpose of this review is to study the  morphology, phytochemical constituents ,distribution and ethnopharmacology of O.bracteatum which may help in future research.

Onosma is a species-rich genus with complicated patterns of morphological and karyological variation, controversial taxonomic treatments. In the present study we focused on the Asterotricha group, one of three major inrageneric groups, in the area of central and southern Eurpe.

Key words: Onosma L.,Shikonins, Onosmins,Naphthoquinones, Onosma bracteatum Wall.Medicinal plants.