Investigation of physico-chemical properties and antioxidant activity of twenty Iranian pomegranate (Punica granatum L.) cultivars
2010
Tehranifar, Ali | Zarei, Mehdi | Nemati, Zahra | Esfandiyari, Behnam | Vazifeshenas, Mohamad Reza
Pomegranate is one of the native fruits of Iran which contains high genetic resources, but there are insufficient information regarding properties of the fruit. The objective of the present study was to investigate the physcio-chemical characteristics and antioxidant activity of twenty pomegranate cultivars grown in Iran. This study showed that there were significant differences among the cultivars in all measured factors except the length/diameter ratio of fruit. The fruit weight, skin percentage, aril percentage and juice percentage were within the range of 196.89-315.28g, 32.28-59.82%, 37.59-65% and 26.95-46.55%, respectively. The total soluble solids content varied from 11.37 (°Brix) to 15.07 (°Brix), pH values from 3.16 to 4.09, titratable acidity content from 0.33g 100g⁻¹ to 2.44g 100g⁻¹ and total sugars content from 13.23g 100g⁻¹ to 21.72g 100g⁻¹. The results also showed that the values of ascorbic acid ranged from 9.91mg 100g⁻¹ to 20.92mg 100g⁻¹. The total anthocyanins content was observed in pomegranate cultivars between 5.56 mg 100g⁻¹ and 30.11mg 100g⁻¹. The level of total phenolics was varied from 295.79mg 100g⁻¹ to 985.37mg 100g⁻¹. The antioxidant activity of pomegranate cultivars was found between 15.59 and 40.72%. These data demonstrated that the cultivar was the main parameter which influences the physico-chemical properties and antioxidant activity in pomegranates.
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