The reaction mechanism of atomic oxygen radical anion ( O-) with ethylene ( C2H4) has been investigated at the G3MP2B3 level of theory. 在G3MP2B3理论水平下研究了氧负离子自由基(O-)与乙烯(C2H4)的反应机理。
The DPPH radical scavenging activities, the reducing powers, the amount of total phenolic compounds, the inhibitory effect on hydroxyl radical and superoxide anion radical o. 测定不同分离组分对二苯代苦味酰肼自由基(DPPH)的清除活性、还原力、酚质量分数、对羟自由基和超氧阴离子自由基的抑制活性。
Meat, eggs, rice, flour, sugar and so on in the body's metabolism to bring a product to the radical anion can Piansuan blood, but these foods are rich in nutrition, is the main food. 肉、蛋、米、面、糖等在体内的代谢产物为带阴离子的酸根,可使血液偏酸,但此类食品营养丰富,是人们的主要食物。
It is concluded that a keto-enol tautomeric equilibrium of the amine radical anion existed in the solution, which is believed to be the first example of keto-enol tauto-merism concerning a stable free radical. 结果表明该自由基负离子在溶液中以酮-烯醇互变异构体存在,这可能是在稳定自由基中发现存在酮-烯醇互变异构平衡的首例。
The effects of2-ethyl-3-hydroxy-6-phenylthio-4 ( 1H)-pyridinone ( HPP) on hydroxyl radical and superoxide anion radical scavenging activity was studied. 研究2-乙基-3-羟基-6-苯硫基-4(1H)-吡啶酮(HPP)对羟自由基和超氧阴离子自由基的影响。
The reaction mechanism between atomic oxygen radical anion and benzene has been investigated using the density functional theory ( DFT). 采用密度泛函理论研究了氧负离子自由基与苯分子的反应。
Preliminary study on processing methyl-orange in the water with sulfate radical anion method 硫酸根自由基处理水中甲基橙的初步研究
The apple polyphenol extracts had stronger reducing capacity, antioxidant activity on lipid-peroxidation, and scavenging effects on hydroxyl radical, superoxide anion radical and nitroso than ascorbic acid at the same concentration. 按照以上工艺制备的苹果多酚提取物具有较强的还原能力和抗脂质过氧化活性,并对羟自山基、超氧阴离子自由基及亚硝基具有很强的清除作用,且优于同浓度的维生素C。
The sample is decomposed by oxygen flask method, sulphur is transformed into sulfuric acid radical anion. 介绍用氧瓶分解-离子色谱测定胱氨酸标准物质中硫元素含量的方法。
Investigation of the Mechanism of the Reaction between Atomic Oxygen Radical Anion and Benzene 氧负离子自由基与苯的反应机理研究
Content of hydrogen peroxide ( H 2O 2) increased and productive rate of superoxide radical anion ( O 2.) 而过氧化氢(H2O2)含量升高,超氧阴离子自由基(O2.)
Detection of radical anion of nitrobenzene in situ on palladium electrode in different solvent 不同溶剂中钯电极上硝基苯游离基的现场检测
It was suggested that GPC can scavenge hydroxyl radical and superoxide anion radical and lipid peroxyl radical in different degrees, in which the scavenging activity could be arranged in the following order: LOO. 提示葡多酚对三种活性氧自由基均有不同程度的清除作用,清除作用强度依次为LOO。
Synthesis and application of the starch copolymer were described in this paper. The starch copolymer were prepared by various method for example: free radical initiator, anion initiator and other copolymerization method. 本文介绍了淀粉共聚物的合成方法,包括自由基引发、阴离子引发和其它引发方法等;
The fullerol radical canon of C_ ( 70) is observed for the first time by laser photolysis or oxidation of sulfate radical anion SO~-in aqueous solution. 将激光光解与SO~-的氧化对比,确认了到C(70)富勒醇阳离子自由基的吸收峰。
Study on ESR Spectrum of Radical Anion of Nitrobenzene 硝基苯阴离子基的ESR谱的研究
Relationship between Superoxide Anion Radical and Anion Transport Protein of Red Blood Cell O2~-·与红细胞膜阴离子转运蛋白相互关系的研究
A non-chain radical anion mechanism induced by single electron transfer from zinc is proposed. 反应可能经锌单电子转移诱发的非链式自由基亲核取代机理。
The ESR study of the reaction system showed that this sulfonationreaction was initiated by the heat induced electron transfer between Hypocrellins and SO_2~ ( 2-) to produce the semiquinone radical anion and sulfur trioxide radical anion ( SO_3~-). 反应体系的ESP研究表明,这一磺化反应首先是通过竹红菌素和Na2SO3之间热活化的电子转移进行的。
The acetylcholine esterase ( Ache) activity, density and clearance of superoxide radical anion ( O2-) and the protein content were determined after preparation of homogenized brain. 制备大脑匀浆,测定乙酰胆碱酯酶活性、超氧阴离子自由基(O2-)浓度和清除率、蛋白含量。
The generation of superoxide radical anion in the solution detected by chemical method was also related to the incubation temperature, reaction time and the concentration of C60. 化学发光法检测反应体系产生中的超氧阴离子同样与反应温度、反应时间和C60浓度相关。
By establishing the reaction system of DPPH free radical, superoxide anion radical, hydroxyl radical and reducing power, antioxidant activity of Camellia Oleifera Polysaccharide with different doses in vitro was studied and compared with antioxidant activity of VC. 通过四种不同的体系(DPPH自由基、超氧阴离子自由基、羟自由基、还原能力)研究了油茶饼粕多糖的体外抗氧化活性,并与VC的抗氧化性进行了对照。
COO was stronger than ROO in ability of inhibition to lard oxidation, scavenging DPPH radical and superoxide anion radical ability, reducing power aswell as Fe2+ chelating ability. COO抑制猪油氧化的能力、对DPPH自由基和超氧阴离子自由基的清除能力、还原能力以及对Fe2+的螯合能力均优于ROO。
The preliminary antioxidant showed that O-DMA has the ability of scavenging both hydroxyl radical and superoxide anion. 对O-Dma进行初步抗氧化活性研究,结果表明它具有一定的清除羟自由基与超氧阴离子的能力。
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。
The study found that the separated components had a certain reducibility and ability to remove hydroxyl radical and superoxide anion. And the experimentation also indicated that they have the T cellular immunity activity. But the antibacterial activity was not obvious. 结果表明分离出的组分具有一定的还原能力、清除羟基自由基的能力和清除超氧阴离子的能力;具有一定的T细胞免疫活性,但抑菌活性不明显。
We optimized extraction process and extraction identification, determination of 46 kinds of tea the capacity of anti-hydrogen peroxide, anti-hydroxyl radical, anti-superoxide anion. 通过提取及提取工艺的确定,测定四十六种保健茶的抗过氧化氢、羟基自由基、超氧阴离子的能力。
Through experiments of eliminate DPPH, hydroxy free radical, superoxide anion and hepatocuprein, the contradict oxidation activity of volatile oil have validated. 通过清除DPPH、羟基自由基、超氧阴离子、超氧化物歧化酶实验,验证了挥发油的抗氧化活性。