Isolation, Characterization, elucidation of Isolated Phyto constituent and screening of anti microbial and anti oxidant activity of Delonix regia (BOJ.Ex.HOOK) RAF leaves.

The present study of Delonix regia (Boj. Ex Hook.) Raf aims at exploring the phytoconstituents of it and to characterize them along with their antioxidant potential. Further it also tries to justify the antimicrobial properties of the leaves of the tree. Isolation of sterols and flavanoid was done and maximum possibility of characterization of isolated sterol was carried out. The isolated compound sterol may be found to be as 16 - (3, 7, 11, 15 – Tetramethyl – 2 – hexadecen – 1 - ol) – 2 - methylene (3a, 5a)- Cholestan – 3 - ol. The anti-microbial study of the leave extract was carried out and compared with the standard. The drug is found to be potential against Pseudomonas aeruginosa and the fungus Candida albicans. The isolated sterol and flavanoid were evaluated for their antioxidant properties using ascorbic acid as standard. Both the isolated compounds found to possess significant antioxidant potential and as compared to the standard. However, the antioxidant potential of flavanoid was found to be more than that of sterol. These were concluded by means of the lower IC50 values of flavanoid than sterol. It can be concluded that the Delonix regia (Boj. Ex Hook.) Raf, which is known better for its ornamental properties, can be explored for its pharmacologically active marker phytoconstituents in future