Author(s): S. Chowdhury*,AK.Ghosh, S. Maji, NN.Bala and P.Chakraborty
In the present study free radical scavenging activity of methanolic leaf extract of Callistemon salignuswas determined by five different in-vitro models, such as DPPH free radical scavenging activity, reducing activity , hydroxyl radical scavenging activity, hydrogen peroxide scavenging activity and superoxide anion scavenging activity. For all the models Ascorbic acid was used as reference standard. Preliminary phytochemical study reveals the presence of glycosides, tannin, carbohydrate, volatile oil, flavonoid and steroid.Alterations of the absorbance due to free radicals were tested in control, test(C salignus extract), & also standard (stock solution of ascorbic acid) groups. Our findings suggested that, methanolic extract of C salignus leaves possessed highest antioxidant activity in dose dependant manner.