The effects of hot air flowing (HAF) on reactive oxygen metabolism of harvested Xinyu tangerine were investigated in this study .The parameters of reactivated oxygen scavenging enzymes and antioxidant such as superoxide dismutase(SOD),catalase(CAT),ascorbate peroxidase (APX),peroxidase (POD),ascorbic acid ( AsA) and reduced glutathione (GSH) were examined periodly during cold storage at (5±0.5)℃.The results in-dicated that HWD significantly inhibited the MDA content of Xinyu tangerine fruit ,enhanced the activities of POD,CAT,APX and delayed the peak of SOD activity .Meanwhile,HWD maintained high content of AsA and GSH.Both efficient enzymatic and non-enzymatic antioxidant defense systems worked in concert to regulate the balance of active oxygen metabolism and protect plant cells from oxidative damage by scavenging of ROS .%以新余蜜橘果实为试材，在已有研究的基础上，研究37℃、36 h热空气处理对新余蜜橘采后活性氧代谢的影响。检测了新余蜜橘在冷藏（5±0．5）℃条件下冷藏期间自由基清除剂超氧化物歧化酶（SOD）、过氧化氢酶（ CAT）、抗坏血酸氧化酶（ APX）、过氧化物酶（ POD）的活性以及抗坏血酸（ AsA）、还原型谷胱甘肽（ GSH）的含量。试验结果表明：整个贮藏期间热空气处理显著抑制新余蜜橘果实丙二醛（ MDA）含量的增加，提高果实抗氧化酶POD、CAT和APX活性和延缓SOD活性高峰的出现，同时发现热空气处理还可以维持果实较高的AsA和GSH含量，通过活性氧酶促和非酶清除体系共同来调控采后新余蜜橘果皮中活性氧代谢的平衡，使果实体内活性氧保持在一个较低的水平，降低活性氧对其自身的危害，延缓果实的衰老进程。
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