superoxide radical

Chemiluminescence method and modified nitrous acid method were applied to determine the concentration of superoxide anion radical in plasma and erythrocyte of rats and the activity of superoxide dismutase ( SOD) respectively.

用化学荧光发光法及改良亚硝酸法分别测定大鼠血浆、红细胞内超氧阴离子浓度及血清总超氧化物岐化酶（SOD）活性。

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Results showed that crude CSPS, CSPS-1, CSPS-2 and CSPS-3 had different superoxide radical scavenging activity, hydroxyl radical scavenging activity, reducing power, lipid peroxidation inhibition effect and ferrous ion chelating activity.

结果表明，Crude CSPS、CSPS-1、CSPS-2、CSPS-3均具有不同的超氧自由基清除能力、羟自由基清除能力、还原力、脂质过氧化抑制活性、金属离子螯合能力。

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The total antioxidant activity, radical scavenging activity ( hydroxyl radical, DPPH and superoxide anion) and the reduction ability of purple potato granules were apparently superior to the conventional potato granules.

紫马铃薯全粉的总抗氧化能力、自由基清除能力（羟自由基清除能力、DPPH自由基清除能力和超氧阴离子清除能力）、还原能力均明显强于普通黄马铃薯全粉。

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Results: Along with the flavonoid in the reaction liquid, the scavenging rate shows ascending trend. When the concentration of flavonoid is 12 μ g/ ml, its scavenging rate is 95.56% and 94.12% on superoxide free radical and hydroxyl free radical respectively.

结果：随着黄酮在反应液中浓度的增加，清除率呈上升趋势，当黄酮浓度达到12μg/ml左右时，对O2·和·OH的清除率可分别高达95.56%和94.12%。

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The antioxidant activities of three kinds of lotus leaf tea infusion were studied by power reducing, DPPH radical system, linoleic acid system, Hydroxyl radical system and superoxide radical system.

采用DPPH自由基体系、亚油酸体系、还原力的测定、羟基自由基体系及超氧自由基体系对三种荷叶茶茶汤的抗氧化能力进行研究。

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The results showed that all the extracts had scavenging effects on four radicals and the scavenging capacity in order of hydroxyl radical> DPPH> alkane radical> superoxide radical.

结果表明，提取物对四种自由基均有清除作用，其清除效果依次为羟基自由基>DPPH自由基>烷基自由基>超氧阴离子自由基。

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The Effect of Superoxide Radical on the ACC Synthase from Etiolated Mungbean Seedlings

超氧阴离子自由基对绿豆黄化幼苗ACC合酶的影响

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The antioxidant activities of the purified polyphenols were evaluated in vitro by scavenging capability of DPPH free radical, superoxide anion free radical and hydroxyl free radical, total antioxidant capability, reducing power and β-carotene bleaching test.

通过测定纯化后的花生壳多酚对DPPH自由基、羟基自由基和超氧阴离子自由基的清除能力、总还原能力、总抗氧化能力及p-胡萝卜素的漂白实验来评估其抗氧化能力。

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