Fruits from the jujube plant (Ziziphus jujuba) possess health-promoting effects and medicinal properties [1]. Jujube has a long history of usage as a remedy in Iranian traditional medicine and is recommended for the treatment of some diseases [2]. The present investigated the variations in antioxidant capacity, total phenol and total flavonoid content of fruit extracts among 29 jujube ecotypes originating from Iran. The fruit tissue extract of mentioned ecotypes were obtained from methanol (85%). DPPH assay was performed for determination of antioxidant capacity of each extract. The total phenol and total flavonoids were measured by Folin-Ciocalteu and Chang method, respectively. Ardestan, Ghazi, Maroon, Shahreza and Podeh1 ecotypes showed most radical scavenge ability (DPPH), respectively, while, Hamedan, Dasht Biaz and Larim ecotypes were exhibited the least antioxidant capacity. Maximum total phenol belonged to Hamidabad, Kolaleh, Glian, Kuhpayeh2 and Natanz ecotypes, respectively, whereas the minimum phenol contents were recorded in Kamchenar, Kuhpayeh and Ghazi ecotypes. Additionally, no correlation between antioxidant capacities and total phenolic contents of extracts was found. Highest total flavonoid contents were obtained from Biazih, Hemoaralak, Kuhpayeh2, Glian and Ghazi ecotypes respectively whilst, the lowest flavonoid contents were observed in Hamidabad, Dahane Larim and Kuhpayeh. The knowledge of these diversities, found in this study, will allow a better plant exploitation related to pharmaceutical uses and also a better conduction of breeding programs for Ziziphus jujuba ecotypes.
