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- superoxide radical anion 超氧阴离子自由基
- The reaction mechanism of atomic oxygen radical anion (O(superscript -)) with ethylene (C2H4) has been investigated at the G3MP2B3 level of theory. 摘要在G3MP2B3理论水平下研究了氧负离子自由基(O(上标-))与乙烯(C2H4)的反应机理。
- Sumi, H., Yatagai, C. and Sumi, A. 1999. Superoxide radical scavenging enzymes detected in the fermented soybean natto. J. Brew. Soc. Japan 94:1016- 1018. 周淑姿、张珍田,1999。发酵大豆超氧歧化酶之纯化与抗氧化特性之研究。八十八年度国科会专题研究计画成果报告。
- However,at high protein concentration(>6.0 mg/ml),the activity became decreasing. The IC50 of scavenging superoxide radical of BWPr from sweet and tartary buckwheat was 4.1mg/ml and 3.2 mg/ml respectively. 0mg/ml浓度范围内;随着蛋白液浓度的增加;清除率近乎直线升高;而再增加蛋白液的浓度;清除率增加幅度下降;甜荞蛋白和苦荞蛋白的IC50分别为4.;1mg/ml、3
- Postharvest 2% citric acid treatment enhanced activities of POD, PAL, CAT and SOD, whereas inhibited activity of polyphenoloxidase (PPO), and reduced contents of superoxide radical (O2-). H2O2 and MDA in pears during storage. 采后2%25柠檬酸处理显著提高贮藏过程中鸭梨果实POD、PAL、CAT和SOD活性却抑制了多酚氧化酶(PPO)活性,同时还抑制了超氧阴离子(O_2~-)和H_2O_2含量上升和MDA的积累。
- Keywords dopamine;autoxidation;superoxide radical; 多巴胺;自氧化;超氧自由基;
- Study on ESR Spectrum of Radical Anion of Nitrobenzene 硝基苯阴离子基的ESR谱的研究
- The ESR spectrum of electrogenerated radical anion of nitrobenzene in aqueous 随pH值下降,硝基苯阴离子基的ESR谱由54条线变为36条线。 这种变化主要是硝基苯分子与其阴离子基之间电子交换速度增大,ESR谱线增宽,谱分辨率下降造成的。
- Keywords peroxydisulfate;silver ion;sulfate radical anion;methylorange; 过二硫酸根;银离子;硫酸根自由基;甲基橙;
- Methods: The electron spin resonance(ESR)was used to observe the scavenging effect on the superoxide anion radical(O2. 方法:采用电子自旋共振技术(ESR)分别检测大黄中主要成分对O2.;-的清除作用。结果:大黄中主要成分对O2
- IC50 of grape polyphenols on scavenging DPPH radical, superoxide anion radical and hydroxyl radical were 1. 本文对葡萄多酚抗氧化活性进行研究。
- Antioxidant activity of extracts from Isatis Indigotica was investigated with the method of scavenging hydroxyl and superoxide anion free radical. 采用清除羟自由基和超氧阴离子自由基法对大青叶抗氧化能力进行了研究。
- Antioxidant performance of extracts of seabuckthorn leaves was investigated with hydroxyl free radical system and superoxide anion free radical system. 采用羟基自由基体系和超氧阴离子自由基体系对沙棘叶提取物的抗氧化性能进行了研究。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- In the superoxide anion radical scavenging assay, only compound 6 showed relatively high effect with IC50 value of 0.88mM. 在清除超氧阴离子自由基的反应中,只有化合物6具有较高的自由基清除率,其IC50值为0.;88mM。
- He took up a radical position on this issue. 他对这个问题抱着激进的态度。
- The man turned from Radical to Conservative. 这人从激进派变成了保守派。
- MethodsUsing the pyrogallicacid autooxidation to determine the activity of three Cordyceps sp. on scavenging superoxide anion radical(O 2-). 方法采用邻苯三酚自氧化法测定3种虫草的抗氧化活性。
- The results showed that whether lotus germ water-extraction or ethanol-extraction having scavenging activities on superoxide anion and hydroxyl radical. 结果表明:无论是莲子心的水提液还是莲子心的醇提液都表现出了良好的清除超氧阴离子和羟自由基的能力。
- Radical anions of N-nitrosoindoles N-亚硝基吲哚自由基负离子