羟自由基

It was found that the antioxidative and antiradical capacity of the amygdlin from almond pollen were weaker than that of ethanol extracts and supernatant after amygcllin crystallization, except hydroxyl radical scavenging capacity.

结果表明：杏花花粉中苦杏仁苷的抗氧化能力，除清除羟自由基以外均低于杏花花粉醇提物和苦杏仁苷结晶上清物。

At present, studies about function of ApoD expressed in vitro are still very little. A concentration-dependent manner of inhibition rate scavenging of hydroxyl radical and prevention nicking of the supercoiled DNA by recombinant BbApoD suggests that BbApoD probably takes part in antioxidation process in vivo widely.

目前，利用体外表达的ApoD蛋白直接测定其功能作用的研究还很缺乏，BbApoD重组蛋白对体外Fenton体系产生的羟自由基的抑制作用以及对DNA氧化损伤保护作用的浓度依赖性变化暗示了文昌鱼ApoD蛋白很可能也参与了体内的抗氧化过程。

Based on this principle, a new method was developed to determine the eliminating ratio of hydroxyl radical in fruit.

据此建立了一种测定水果对羟自由基的清除率的新方法。

Objective To study the change of hydroxyl free radicals during cerebral ischemia and reperfusion and the effect of ketamine on it.

目的 研究脑缺血和再灌流期间的羟自由基变化及氯胺酮对其影响。

The free radical scavenging effects of Meretrix meretrix hydrolysates prepared with papain,neutral protease and acid protease were investigated.

利用正交实验研究了文蛤蛋白分别经木瓜蛋白酶、中性蛋白酶、酸性蛋白酶作用后酶解物对羟自由基和超氧自由基的清除作用，优化了水解条件，并对最佳清除率下的三种酶解物进行SephadexG50凝胶柱分离，测定酶解物中抗氧化活性肽的分子量分布。

We also studied their inhibition on H2O2,UV-induced hemolysis of RBC. Sodium paeonol sulfonate was used as keep-freshing agent in tomato storage and vitamin C content, brix, acidity, weight loss, membrane permeability, soluble protein content, SOD andPOD activity was determined. The results were as follows: Paeonol and sodiumpaeonol sulfonate had remarkably inhibitory effects on Xanthmonas oryzaepv.oryzicda,Pseudomonas solanacearum Smith, Phyllosticta mali Pril.et Delac.and Rhizoctonia solani Kuhn.

在生物学活性方面，检测了丹皮酚及丹皮酚磺酸钠对植物病原菌的抑制作用，测定了其清除超氧阴离子自由基(O_2~-)、羟自由基的活性及对过氧化氢(H_2O_2)和紫外线诱导红细胞溶血的影响，并用丹皮酚磺酸钠对樱桃番茄进行了保鲜研究，测定贮藏期间番茄的维生素C含量、糖度、酸度、失重率、膜透性、可溶性蛋白含量、超氧化物歧化物及过氧化物活性等。

OBJECTIVE To study the effects of aloe-emodin and emodin on scavenging superoxide anion free radical O(superscript – subscript 2 and hydroxy free radical.

目的：研究芦荟大黄素和芦荟素对超氧阴离子自由基O(上标–下标 2、羟自由基的清除作用。

Methods The pyrogllol auto-oxidation was adopted to produce superoxide anion O(superscript - subscript 2; the system H2O2/Fe(superscript 2+) was used to produce hydroxy radical through Fenton reaction; and spectrophotometry was used to detect the clearing functions of drugs with different concentrations against O(superscript - subscript 2) and OH.

采用邻苯三酚自氧化法产生超氧阴离子自由基O(上标-下标 2，采用H2O2/Fe(上标 2+)体系通过Fenton反应产生羟自由基，用分光光度法分别测定不同浓度的药物对O(上标-下标 2)是和OH的清除作用。

Antioxidative activity of flavonoids from Lespedeza bicolor were investigated by examining the scavenging effects on hydroxyl radicals and superoxide anion O2(superscript - and the inhibitions on auto-oxidation of lard, rape seed oil, and linoleic acid, The results showed that LBF had significant scavenging functions to free radical and superoxide anion, and the scavenging effect increased with the increase of the content of LBF; LEF can remarkably inhibit auto-oxidation of lard, rape seed oil, and linoleic acid, indicating its potential as a natural antioxidant.

通过二色胡枝子黄酮(Lespedeza bicolor flavonoids， LBF)清除羟自由基、超氧阴离子的效果及抑制猪油、菜油、和亚油酸的自氧化来研究二色胡枝子黄酮的抗氧化活性。其研究结果表明，二色胡枝子黄酮对清除自由基有显著性作用，且清除率随黄酮浓度的增加而增大；能够极显著地抑制猪油、菜油、亚油酸的自氧化(P.01)，抑制作用随浓度的增大而增强。作为天然的抗氧化剂，二色胡枝子黄酮具有一定的开发利用价值。

The effect of dose rate on the radiation chemical yield ofhydroxyterephthalate in the radiolysis of aerated terephthalate aqueoussolution has been investigated,and the generation of OH by copper ion catalyzedFenton reaction has been evaluated with the help of TA.

首先研究了剂量率对对苯二甲酸剂量计的影响，然后将对苯二甲酸用于测定铜催化的类Fenton产生的羟自由基的速率，并观察了MT存在对铜催化Fenton反应产生OH自由基的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。