DPPH In this study, UV-C treated juice samples, except U60 showed significant increase in the percentage of DPPH inhibition when compared to control. The highest percentage inhibition of DPPH was 91.2%(8.99 _g AAE/ml) for U30 sample, compared to the control,84.1% (8.29 _g AAE/ml). In terms of reducing power, UV-C treated samples (U15 and U30) showed significant increase in comparison with control. The maximum increase in reducing capacity (12%) was from 360.71 _g AAE/ml to 405.75 _gAAE/ml in control and U30 sample, respectively. No significant changes were observed in percentage of DPPH inhibition after thermal treatment. Likewise, thermal pasteurized samples showed non-significant decrease in reducing ability (345.10 _g AAE/ml) when compared to the control(360.71 _g AAE/ml).