regional variations of antioxidant capacity and phenolic properties in the iranian jujube collection

background & aim: fruits from the jujube plant (ziziphus jujuba) possess health-promoting effects and medicinal properties. jujube has a long history of usage as a remedy in iranian traditional medicine and is recommended for the treatment of some diseases. this study investigated the variations in antioxidant capacities (aox), total phenol (tph), total flavonoid (tf) and total anthocyanin (ta) contents of fruit extracts among 29 jujube accessions originating from 7 provinces of iran. experimental: the fruits from 29 accessions were extracted with methanol (85%). dpph assay were performed for determination of antioxidant capacity of each extract. the total phenols were measured by folin-ciocalteu method and total flavonoids evaluated using the aluminum chloride colorimetric procedure while total anthocyanins were determined by ph-differential method. results & discussion: the results from the analysis of variance (anova) revealed that the examined accessions of z. jujuba were highly variable in all evaluated phytochemical traits (p