Changes in scavenging activities of superoxide anion radical (A), hydroxyl radical (B) and DPPH radical (C) in peel tissues of banana fruit treated with oxalic acid at 0 (○, control) and 20 mM (•) for 10 min during storage at 25 °C and 75–90% relative humidity. Data presented are the means ± standard errors (n = 3). The least significant difference (LSD) (P = 0.05) was calculated for mean separation