Abstract:The contents of polyphenols in jujube peel，jujube pulp and jujube kernel were determined while treating Hetian jujube，Ruoqiang jujube and Hami jujube as the research objects，and the antioxidant capacity were tested，including total antioxidant capacity，free radical scavenging capacity and hydroxyl radical and DPPH·radical.The results showed that the contents of total phenols in peels were in the order of Ruoqiang jujube（28.10 mg/g）>Hami jujube（26.61 mg/g）>Hetian jujube（25.03 mg/g），and the contents in the pulps were in the order of Hami jujube（17.26 mg/g）>Ruoqiang jujube（15.75 mg/g）>Hetian jujube（13.82 mg/g），while those in jujube kernels were almost same （about 2.0 mg/g）.In terms of antioxidant capacity，the total antioxidant activity of the crude phenolic extract from the jujube peel was the highest，and that in the jujube kernel was the lowest.The antioxidant capacity of the jujube pulp of Hami jujube was superior to the other two jujubes，including the hydroxyl radical and DPPH·radical scavenging capacity with highest rates of 88.68%and 87.40%respectively，while the scavenging rates of Hetian jujube kernels were 19.85%and 9.13%，respectively.Then the scavenging rates of Hami jujube pulp were 82.22%，80.08%.The antioxidant capacity has a positive correlation with the content of polyphenols in jujube.