Fig. 3From: Chemical profiling and antioxidant activity of Equisetum ramosissimum Desf. stem extract, a potential traditional medicinal plant for urinary tract infectionsIn vitro antioxidant activity of E. ramosissimum Desf. stem extracts by DPPH, ABTS, superoxide, hydroxyl radical scavenging, and FRAP assays. Different letters in the graph indicate significant differences (a p ≤ 0.05; b p ≤ 0.01; c p ≤ 0.001; n, no significance) in the tested extracts with the reference standard, ascorbic acidBack to article page