槲皮素

The theoretical plate numbers of kaempferol and quercetin were 5 121 and 6 673, the resolution between kaempferol, quercetin and impurities were 1.96 and 5.32, respectively.

该方法精密度、重现性和分离效果好，分析快速准确，适合于该药材及提取物中山柰酚和槲皮素含量的测定，不同产地两成分均存在一定的差别。

Zhang said the flavonoids that appeared to be the most protective included catechin , found in strawberries and green and black teas; kaempferol , found in Brussels sprouts and apples; and quercetin , found in beans, onions and apples.

章启月说，黄酮类化合物似乎是最保护包括儿茶素，发现在草莓和绿色和红茶；山奈酚，发现在布鲁塞尔举行的豆芽和苹果；和槲皮素，发现在豆类，洋葱和苹果。

The rate constants of the reactions of α-hydroxyl ethyl peroxyl radicalwith quercetin, ruitn, catechin and baicalin were determined through pulse radiolysisstudies to be 〓,〓,〓〓 and 〓, respectively.

用脉冲辐解的方法得到槲皮素、芦丁、儿茶素以及黄芩甙与α-羟乙基过氧自由基的反应速率常数分别为〓；3.4〓；〓和〓。

Quercetin was prepared by hydrolyzing rutin. Their antioxidant activities were tested using phosphomolybdate method, and compared with those of BHT and V.

采用磷钼酸盐法测定了不同质量浓度的粗提物、芦丁和槲皮素的抗氧化活性，并与BHT、V的抗氧化活性进行了比较。

AbstractObjectiveTo establish a method for determination of the content of quercetin in Phyllanthus emblica L..

目的建立余甘子药材中槲皮素含量测定的方法。

A method based on capillary electrophoresis with electrochemical detection has been developed for the separation and determination of epicatechin, kaempferol, chlorogenic acid, 4-hydroxybenzoic acid, quercetin and protocatechuic acid in hawthorn for the first time.

首次采用毛细管电泳—电化学检测法同时测定山楂中的6种活性成分：表儿茶素，山奈酚，氯原酸，4-羟基苯甲酸，槲皮素和原儿茶酸的含量。

The determination of quercitin was performed on Century SIL C18 BDS (250 mm×4.6 mm, 5μm) column, using methanol-water-phosphoric acid (V:V:V=60.00:40.00:0.02) as mobile phase at a flow rate of 0.8mLmin^(-1) and UV detection at 360 nm. The determination of gallic acid was performed on Century SIL C18 BDS (250 mm×4.6 mm, 5μm) column, using acetonitrile-water-phosphoric acid (V:V:V=5.00:95.00:0.02) as mobile phase at a flow rate of 0.8mLmin^(-1) and UV detection at 272 nm.

槲皮素的测定条件为：Century SIL C18， BDS(250.0mm×4.6mm， 5μm)色谱柱，流动相为甲醇－水－磷酸（体积比为60.00：40.00：0.02），流速为0.8mLmin^(-1)，检测波长为360nm；没食子酸的测定条件为：Century SIL C18 BDS (250.0mm×4.6mm， 5μm)色谱柱，流动相为乙腈－水－磷酸（体积比为5.00：95.00：0.02），流速为0.80mLmin^(-1)，检测波长为272nm。

It is well known that isorhamnetin is used in clinic to cure coronary artery diseases, rhamnetin is used as a fine anti-inflammatory, and these medicines are just such methylated products.

本课题通过对槲皮素甲基化的研究，力求得到五个不同位置的甲基化反应产物。

objective:to establish an rp-hplc method for the determination of quercetin in sorbaria sorbifolia.methods:the content of quercetin was determined by rp-hplc.

目的：建立珍珠梅中槲皮素反相高效液相色谱法含量测定方法。

The method is simple,convenient,and this extraction procedure is helpful for further study of extraction technology of triterpene acids of Herba euphorbiae Humifusae.

提取方法操作简单、方便，为地锦草槲皮素提取工艺的进一步研究提供了依据。

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。