P. phoenicea Linn. (Sterculiaceae), commonly known in Hindi as Dopa-hariya, is an annual erect herb. The capsules are mucilaginous and used for treatment of diseases of bowels. The water of boiled leaves of plant has been reported to be used traditionally for treatment of inflammatory glands, cough and cold; roots have been reported to be astringent, mildly thermogenic, constipating and febrifuge, and are useful in fever, diarrhea, burning sensation, psychopathy and vitiated conditions of vata and pitta. 4 A review Thiazovivin chemical structure of the literature did not throw any light on the scientifically

established biological activity of the plant. Thus P. phoenicea have been presently tested to assess the in-vitro antioxidant activity and to establish the hypoglycemic use with specificity to pancreatic α-amylase. 2,2-Diphenyl-1-picrylhydrazyl (DPPH), quercetin, methanol, chloroform, ethanol, acetone, hexane, n-butanol, sodium phosphate buffer, 3,5 dinitrosalicylic acid, α-amylase, potato starch, acarbose etc. The leaves P. phoenicea were collected from the local areas of

Kanpur, in the month of September, 2011. The plants were identified by taxonomist & voucher specimens were preserved at the herbarium section of departmental museum of C.S.J.M. University, Kanpur for future reference. The air dried powder of P. phoenicea leaves (100 g) was extracted IDO inhibitor by maceration in 70% methanol at room temperature for 24 h and filtered off. The marc was re-percolated again (process repeated four times) for exhaustive extraction. The combined hydroalcoholic extracts (HME) were concentrated under reduced pressure at a temperature not exceeding 35 °C and the residual water was removed by lyophilization. The concentrate was subjected to fractionation with hexane (HXF), chloroform (ClF), ethyl acetate (ETF), n-butanol (BUF) and water (AQF). All the fractions were subjected to activity studies. To obtain polysaccharide fraction (PSF); leaf powder was extracted twice with two volumes of deionized

water under constant stirring for 3 h in a 60 °C water bath. The mixture was filtered and the filtrate was precipitated by the addition of ethanol to a final concentration of 75% (v/v) and the precipitates were collected by centrifugation, washed with acetone, dissolved in deionized water and finally lyophilized. 5 Brown check crude water soluble polysaccharides were obtained. Briefly, a 0.1 mM solution of DPPH in 100% methanol was prepared. To 1 ml of this solution was added 4 ml of sample solution in 40% methanol at different concentrations (1–100 μg/ml). The mixture was shaken vigorously and incubated for 30 min in the dark at room temperature until stable absorption values were obtained. The reduction of the DPPH radical was measured by continuously monitoring the decrease in absorption at 517 nm. In the control, 40% methanol was substituted for samples.6 Lower absorbances of the reaction mixture indicated higher free radical scavenging activity.