evaluation of antioxidant activity of malus domestica fruit extract from kashan area

objective: antioxidants are considered as the main factors in the inhibition of unwanted oxidation reactions. materials and methods: in this research the antioxidant potential of the fresh fruits of 4 cultivars (a to d) of malus domestica (m. 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). results: 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 cultivar a showed moderate antioxidant activity with 63.92±0.42 and 6.02±0.03 inhibition percentages, respectively and other samples were weakly active. conclusion: the folin-ciocalteu's phenol test was also showed very little phenolic compounds for the fruits. in conclusion, weak antioxidant activity was estimated for the studied apple cultivars.