过氧化氢酶

In addition,the reaction rate was closely related to the quantity of enzyme and hydroge...

另外，反应速度与酶和过氧化氢的用量有关，增加酶用量或适量增加过氧化氢的用量可以明显缩短反应时间。

UV-B-induced damage in such leaves could be reduced with 0.5 mmol.L-1 NaHSO3 treatment; brown spots on the leaf surface were reduced in number, the degree of leaf wilt was reduced, degradation of chlorophyll and carotinoid was reduced and flavonoid level was increased. With the NaHSO3 treatment, the content of H2O2 in leaves of Phaseolus vulgaris under enhanc ed UV-B radiation was significantly lower than in controls, and the activities of antioxidant enzymes were higher with treatment than in controls.

结果表明：与未处理对照相比较，用0.5 mmol.L-1 NaHSO3处理的离体红芸豆叶片表面褐色斑减少、边缘蜷曲及萎蔫程度降低；且能延缓叶片中叶绿素和类胡萝卜素含量的降低；使类黄酮含量升高；叶片中过氧化物酶和抗坏血酸过氧化物酶活性升高，过氧化氢(H2O2)含量降低。

It was investigated that the immobilized catalase was affected by temperature and pH and inhibited by hydrogen peroxide.

研究了温度和pH值对酶活性的影响及过氧化氢和尿素对固定化酶的抑制作用。

Superoxide dismutase (EC 1.15.1.1;SOD) is a metal-containing enzyme that widely exist in organisms. It catalyzes the dismutation of superoxide free radical and produces hydrogen peroxide and oxygen.It plays an important role in protecting the plasmalemma from the reactive oxygen species.A recombinant plasmid pPICZA-sodM18 was constructed and after its linearization was transferred into chromosome of Pichia pastoris GS115 by electroporation.

超氧化物歧化酶(Superoxide dismutase；EC 1.15.1.1；SOD)是广泛存在于生物体内的金属酶，是机体内唯一以超氧阴离子自由基(O_2~-)为底物的酶，它能专一地催化O_2~-的歧化反应，生成过氧化氢和氧气，能有效的抵御氧自由基和其他氧化物自由基对细胞质膜的毒性，对机体防御氧化损伤起着十分重要的作用。

The preliminary stiochiometric analysis showed that when the enzyme metabolized EDDA, two acetyl groups were removed and ethylenediamine and two glyoxylates were produced in the presence of oxygen.

然后对该酶促反应进行了定量分析：结果显示在IDA氧化酶的作用下每代谢一分子的EDDA将生成二分子的乙醛酸及一分子的乙二胺，同时也检测到过氧化氢的生成。

Its substrate is glycolate produced in C3 plants by the oxidation of ribulose bisphosphate to glycerate 3-phosphate and phosphoglycolic acid.

在过氧化物酶体中，乙醇酸在乙醇酸氧化酶作用下，被氧化为乙醛酸和过氧化氢。

In this study, a novel method based on the fading of isatin is proposed to determine the glucose oxidase activity.

利用靛蓝胭脂红褪色分光光度法测定葡萄糖氧化酶催化葡萄糖溶液产生的过氧化氢浓度，经过标准曲线转换得到葡萄糖氧化酶的活力。

SO〓 injury caused a reduction of water, chlorophyll and anthocyanidin, and pH values of the grapes injured by SO〓 were decreased and the intracellular acidification of flesh could be found. SO〓 injury also inhibited activities of SOD, POD and CAT, and deceased ASA contents. Hence the membrane lipid per oxidation was accelerated and the content of MDA and relative electrical conductivity were increased. Treatment of toxic dose of SO〓 increased respiratory rate, lowered activities of PAL and PPO.

与不耐SO〓的品种&红地球&相比，耐SO〓品种&巨峰&具有较高的pH值和较大的缓冲容量，较高的超氧化物歧化酶和苯丙氨酸解氨酶活性；受SO〓刺激后，耐SO〓品种&巨峰&的超氧化物歧化酶及苯丙氨酸解氨酶活性和酚类物质含量上升幅度大于不耐SO〓的品种&红地球&；长期处于SO〓伤害环境时，耐SO〓品种&巨峰&的过氧化氢化酶活性下降幅度低于不耐SO〓的品种&红地球&。

Crude enzyme liquid alone had no function in decolorization, while mycelium had great function in decolorization. When added H2O2 and veratryl alcohol into the crude enzyme liquid, the decolorization rate had increased from 0% to more than 30%, so the H2O2 and veratryl alcohol played roles in the decolorization.

在利用粗酶液废水脱色研究时，发现粗酶液单独没有脱色作用，有菌体存在时脱色效果明显：粗酶液中加人过氧化氢和黎芦醇后，脱色率由0％增至30％以上，，因此酶与染料作用过程中也需要过氧化氢和黎芦醇作为中间体。

Wu B, Wang TH, Pan JY, Zhu XN, Zhan CY. The role of G protein, protein kinase C and Na+-H+ exchanger in endothlin-1-induced cardiomyocyte hypertrophic responses.

这些结果表明在ET-1诱导的心肌细胞肥大中ROS产生增加，而用过氧化氢酶CAT抑制ROS中的H2O2 后， ET-1诱导的心肌细胞肥大也被抑制。

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。