Samples AAa RORb Ripe     84.04 ± 0.47a 0.14 ± 0.01a Unripe 81.35 ± 1.25b 0.18 ± 0.06b Seed 75.35 ± 0.96c 0.25 ± 0.01c Leaves 78.03 ± 1.33c 0.29  ± 0.01d Concentration sample was 0.04 mg/ml. Values are expressed as mean ± standard deviation (n = 3). Means with different letters within a column were significantly different at the level P < 0.05. AAa Antioxidant activity index.

Table 4: Antioxidant activities of different parts of papaya extracts by β-carotene– linoleate bleaching method RORb Oxidation rate ratio.