自氧化剂

The paper also studied the antioxidation capacity of soybean peptides in the food system and non-food system. The results showed that the soybean peptides can prolong the inducing period of the axunge oxygenation and cooperate with hydroxybenzene antioxidant which was more obvious in the food system. In the non-food system, the soybean peptides can control the autooxidation speeds of octadecadienoic acid and diphenolic compound and the effect on the latter was more obvious.

论文对大豆多肽在食物体系与非食物体系中的抗氧化性能做了研究，结果表明：大豆多肽在食物体系中能够延长油脂氧化酸败的诱导期，而且与酚类抗氧化剂协同作用，效果更为明显；在非食物体系中，大豆多肽能够抑制亚油酸的自氧化及邻苯三酚的自氧化速率，其中对后者的抑制作用较前者显著。

Autistic children often have lower levels of detoxification enzymes and antioxidants and may therefore be more susceptible to environmental toxins and food chemicals such as gluteus.

自闭症儿童往往有较低层次的解毒酶和抗氧化剂，因此可能会更容易受环境毒素和食品化学品如臀大肌。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本论文分六章，包括生物活性氧表征的研究进展、自旋标记荧光探针表征自由基的研究、利用Fe-EDTA引发对苯二甲酸芳环羟基化反应评价抗氧化剂清除羟基自由基能力的研究、荧光法表征过氧亚硝酸根的研究、螺环型罗丹明B酰肼化合物作为新型荧光探针的性质及应用的研究、结论与展望。

The composition, crystal shape, morphology, magnetic characteristic and thermal stability of the samples were characterized by powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometry and thermogravimetric analysis, respectively.

张佳 大连理工大学材料科学与工程学院，大连 116085刘顺华大连理工大学材料科学与工程学院，大连 116085冀志江中国建筑材料科学研究总院，北京 100024采用水热合成法，以(NH4)2S2O8作氧化剂，以MnSO4·H2O为锰源，制备了自生核壳结构MnO2粉体。

The effect of fuel and oxidant molarity on the reaction was investigated , and it is found that the reaction can proceed in self propagating high temperature synthesis model only when the fuel is excess .

探讨了燃料和氧化剂配比对反应的影响，发现燃料过剩是自蔓延高温合成的必备条件。

Current study found that:(1) Nicotine scavenged hydroxyl and superoxide free radical and inhibit oxidation of 6-OHDA.

我们研究发现：(1)烟碱可以有效清除活性氧自由基，能够抑制多巴胺自氧化，是一个抗氧化剂。

The effects of temperature and time on the auto-oxidation of walnut oil and antioxidation activity of several antioxidants in walnut oil were studied by oven-storage test.

以过氧化值(P0V)为指标研究了温度、时间对核桃油自氧化过程的影响及添加抗氧化剂对核桃油抗氧化性能的影响。

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 results showed that the POV of hemp seed oil was affected remarkably by temperature and time, and the effect of temperature was greater than that of time. The TBHQ had good antioxidation ability to hemp seed oil. TBHQ or BHA with isoascorbic acid or critic acid exhibited great antioxidation ability, the synergistic effect on the oil of critic acid was better than that of isoascorbic acid. When 0.02% TBHQ with 0.005% BHA and 0.01% critic acid or with 0.005%BHA and 0.01% isoascorbic acid was used in the oil, the shelf life of the oil could be prolonged from 4 months to 11~13 months at 20℃.

结果表明，温度、时间对汉麻籽油的自氧化过程有显著影响，且温度的影响更明显；叔丁基对苯二酚对汉麻籽油具有较好的抗氧化性能，柠檬酸和异Vc对TBHQ与丁基羟基茴香醚复配的复合抗氧化剂均表现出较强的协同抗氧化性能，且柠檬酸的协同抗氧化性优于异Vc；添加0.02%TBHQ+0.005%BHA+0.01%柠檬酸或0.02%TBHQ+0.005%BHA+0.01%异Vc复合抗氧化剂，可使汉麻籽油在20℃下的预贮藏时间从4个月延长至11~13个月。

At the early stage of stress (2 d and 5 d), the Pn, Tr, Ci and Gs of own-root plant were significantly decreased, while Ls was significantly increased, the inhibition of photosynthesis of own-root plant was mainly caused by stomatal factor, water use efficiency was significantly elevated, resulting from lower Pn.

在NaCl胁迫下，自根苗和嫁接苗叶片和根系中酶(SOD、POD、CAT和APX)活性和抗氧化剂含量发生明显变化，或被诱导上升，或被抑制下降，但嫁接苗各指标均显著高于自根苗，而丙二醛含量显著低于自根苗，表现出较强的抗氧化能力。

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。