Pharmacognosy Journal, 2010; 2(9):297-303
Research Article | doi:
Pharmacognostic and Phytochemical Studies of Bark of Oroxylum indicum
Oroxylum indicum Vent. (Family- Bignoniaceae) syn: Sonapatha & Shyonaka is generally found in sub Himalayan region of India, which yet to be fully explored in terms of medicinal plants. It posses anti-inflammatory, anthelmintic, antihepatotoxic, anticancer, immunomodulator, gastroprotective properties as earlier reported in the literature and hence is an active ingredient of several Ayurvedic formulations like Chyawanprash and Dashmoolarishth etc. It is one of the important ‘Rasayana’ drugs mentioned in ayurveda. Preliminary phamacognostic studies were carried out on the bark including morphological, microscopical, physicochemical studies alongwith phytochemical screening. The protocol followed for elucidating physicochemical properties were as per WHO guidelines. The successive extraction of plant bark was undertaken by using various solvents of increasing polarity and the extracts thus obtained were subjected for phytochemical analysis, followed by thin layer chromatographic examination by optimizing the solvent systems. The phytochemical investigation revealed the presence of alkaloids, glycosides, flavonoids, and phenolic compounds mainly. These preliminary data may be helpful in developing the standardization parameters of Oroxylum indicum bark.