Antioxidants are considered as the main factors in the inhibition of unwanted oxidation reactions. In this research the antioxidant potential of the fresh fruits of 4 cultivars of Malus domestica cultivated in the Kashan, Qamsar area was evaluated. The antioxidant activity of the samples were evaluated using two complementary antioxidant assays: 2,2-diphenyl-1-picrylhydrazyl (DPPH) and β-carotene/linoleic acid tests and the results were compared with the synthetic standard antioxidant butylated hydroxytoluene (BHT). Total phenolic contents of the samples are also estimated by Folin-Ciocalteu's phenol test. In both DPPH β-carotene/linoleic acid tests in the concentration of 2 mg/ml, only samples from Hossain cultivar showed moderate antioxidant activity with 63.92 ± 0.42 and 6.02 ± 0.03 inhibition percentages, respectively and other samples were only weekly active. The Folin-Ciocalteu's phenol test was also showed very little phenolic compounds for the fruits. In conclusion, week antioxidant activity was estimated for the studied apple cultivars.
Key words: Apple, Malus domestica, extract, antioxidant activity, total phenolic content.
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