槲皮素

Results Eleven compounds were isolated and identified as:quercetin(1),kaempferol(2),quercitrin(3),protocatechuic acid(4),gallic acid(5),protocatechuic acid ethyl ester(6),ethyl gallate(7),vanillic acid(8),1,5,7-trihydroxyl-3methylan...

结果得到11个化合物，分别鉴定为：槲皮素(1)、山柰酚(2)、槲皮苷(3)、原儿茶酸(4)、没食子酸(5)、原儿茶酸乙酯(6)、没食子酸乙酯(7)、香草酸(8)、1，5，7-三羟基-3-甲基蒽醌(9)、琥珀酸(10)、5-羟甲基糠醛(11)。结论化合物6、7、9、11为首次从该属植物中分离得到。

Flavonoids (hyperin, rutin, quercitrin and quercetin) and saponins compounds from Acanthopanax Senticosus Harms have been extracted by means of a microwave-assisted extraction technique.

利用微波辅助萃取法萃取刺五加中的黄酮类(金丝桃苷、芦丁、槲皮苷、槲皮素)化合物和皂苷类化合物。

Microbial transformation offers new access to gain quercetin and rhamnose.

种新型的槲皮素、鼠李糖生产方法。关键词：微生物转化；芦丁；槲皮素；鼠李糖

My company's main products: Rhynchophylline Gouteng silymarin (ethanol extract And no residual acetone) silymarin (water-soluble) silybin resveratrol daidzein emodin Suanzaoren extract of soy isoflavones curcumin, artesunate - Song Shupi extract, Hypericum perforatum extract, wild chrysanthemum extract, camptothecin, hawthorn extract, ursolic acid, corn required to extract, Maidong extract, garlic extract, ginsenosides, Chinese wolfberry extract - And asked Jing extract, green tea extract, the extract of small BAI Ju, Kushen extract, valerian extract, Salicylaldehyde glycosides, podophyllotoxin, Monascus Abulimiti of admission, puerarin extract, extract of astragalus, bitter melon extract Of, the thorn Tribulus terrestris extract, the extract of Ginkgo biloba leaves, Zhishi extract, Icariin, grape seed extract, Salvia extract yam extract, blueberry extract, the extract of Andrographolide, white Liu admission of Piti , Filed on Schisandra, Gynostemma extract, the extract of Angelica, Trifolium pratense extract, the extract of Rhodiola, soil Fritillaria saponins, Huang Chunju extract, and Cimicifuga extract, Hypericum perforatum Extract, Polygonum cuspidatum glycosides, genistein, reserpine, synephrine, sinomenine, Ciwujia glycosides, yam saponin, puerarin, peeling hormones, Kawa Ti of admission, lutein, lycopene, pumpkin seeds extract, licorice extract, nettle extract, the extract baicalin, Osthol, Asarum, saw Mr Brown extract, water Zaojiao extract, rutin extract, purple cabbage extract , Motherwort extract, Yanhusuo extract, hops extract, the extract of Magnolia officinalis, Cyclovirobuxine wood extract, Ban Langen extract, ginger extract, dandelion extract, senna extract, aloe extract , Dangshen extract, the extract of honeysuckle, quercetin, etc.

我公司主营产品：钩藤 Gouteng ·水飞蓟素·水飞蓟素·水飞蓟宾·白藜芦醇·大豆甙元·大黄素·大豆异黄酮·酸枣仁提取物·姜黄素，青蒿素松树皮提取物，连翘提取物，野菊花提取物，喜树碱，山楂提取物，熊果酸，玉米须提取物，麦冬提取物，大蒜提取物，人参总皂甙，枸杞提取物，问荆提取物，绿茶提取物，小白菊提取物，苦参提取物，缬草提取物，水杨甙，鬼臼毒素，红曲米提取物，葛根提取物，黄芪提取物，苦瓜提取物，刺蒺藜提取物，银杏叶提取物，枳实提取物，淫羊藿甙，葡萄籽提取物，丹参提取物，山药提取物，越橘提取物，穿心莲提取物，白柳皮提取物，五味子提起物，绞股蓝提取物，当归提取物，红车轴草提取物，红景天提取物，土贝母总皂甙，黄春菊提取物，黑升麻提取物，贯叶连翘提取物，虎杖甙，染料木素，利血平，辛弗林，青藤碱，刺五加甙，薯蓣皂素，葛根素，脱皮激素，卡瓦提取物，叶黄素，番茄红素，南瓜籽提取物，甘草提取物，荨麻提取物，黄芩提取物，蛇床子，细辛，锯叶棕提取物，水皂角提取物，芦丁提取物，紫甘蓝提取物，益母草提取物，延胡索提取物，啤酒花提取物，厚朴提取物，黄杨木提取物，板兰根提取物，生姜提取物，蒲公英提取物，番泻叶提取物，芦荟提取物，党参提取物，金银花提取物，槲皮素，等等

The results of HPLC tests indicated that Bt toxin in Bt transgenic cotton had not obviously affected the contents of flavonoids (mainly rutin and isoquercitrin and a few quercetin ),contradictively ,the result of combined dosage test in vitro showed that that rutin had significantly enhanced the suppression of Bt-ICP on the cotton bollworm larvae., in addition to the

采用高效液相色谱法测定转Bt基因棉花主要抗虫黄酮类化合物的的变化，结果表明外源Bt杀虫蛋白表达不会对棉花自身原有的主要抗虫黄酮类物质（包括芸香苷、异槲皮苷和含量较少的槲皮素）产生不利的影响，因此可以将Bt杀虫蛋白基因转入抗虫黄酮类物质中国农业科学院博士学位论文含量高的棉花品系。

Quercetin is one of the effective components contained in sophora japonica flower bud.3-hydroxy 4-carbonyl,4-carbonyl 5-hydroxy,and 3′,4′-dihydroxy groups of quercetin could be become chelating position with metal.

槲皮素（3，5，7，3′，4′－五羟基黄酮）是中药槐花蕾的有效成分之一。槲皮素的3－羟基4－酮基，5－羟基4－酮基及3′，4′－二羟基均为可络合部位。

RESULTS Kaempferol, quercetin and impurities were separated.

结果 槲皮素，山柰酚与相邻杂质能很好分离，其分离度分别为1.96和5.32，理论塔板数以槲皮素峰和山柰酚峰计算，分别为5121和6673；在5～100mg·L^-1内峰面积与其浓度均呈良好的线性关系（r=0.9994，0.9996），样品回收率分别为97.58％和105.67％；两成分含量以湖南张家界的最高而湖北赤壁最低。

Vitamin E and quercetin are both effective anti-oxidant, but it is still unclear whether VE and quercetin can protect nerval system of mice through crossing placenta barrier and blood-brain barrier.

维生素E和槲皮素都是有效的抗氧化剂，但VE和槲皮素是否可以通过胎盘屏障和血脑屏障对子代小鼠的神经系统产生保护作用，目前还不清楚。

However, the superheating effect may also result in the degradation of thermolabile compounds. Both the data of calculated activation energy and the results of experiments indicated that quercetin glycosides degraded under the high temperature caused by microwave irradiation.

首次从理论和实验两方面研究了微波加热对以槲皮素为甙元的黄酮甙的稳定性的影响，计算得到的活化能数据和实验结果均显示微波加热产生的高温可导致槲皮素糖甙发生分解。

It is not known whether flavonoids can be absorbed in amounts sufficient to exert an antiviral effect in humans, and therefore their possible role in the treatment of childhood exanthems remains unknown.

约黄酮类化合物抗病毒行动已观察到的试管实验。41 42 43 44 45 槲皮素，黄酮类化合物之一的，所表现出特别强烈的试管抗病毒特性； 46 47 48但是，一项研究没有找到槲皮素将有利于小鼠的病毒感染。49这不知是否黄酮类化合物可吸收的数额不足以在人体发挥抗病毒效果，因此，他们在治疗儿童exanthems可能发挥的作用仍然不得而知。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。