槲

This dry extract contains valuable herbal substances, including the flavonoids quercetin and isoquercitrin.

这宝贵的干草药提取物含有的物质，包括类黄酮槲皮素和

The purity of isoquercitrin was isolated with a silica gel column .

酶反应产物用硅胶柱层析法提取，可以得到高纯度的异槲皮甙。

A good linearity between the peak area and the concentration was found in range of 0.001250-0.8000, 0.002500-0.1000 and 0.002500-0.1000 gL^(-1) with correlation coefficients of 0.9995, 0.9995 and 0.9981 for apigenin, luteolin and isoquercitrin respectively.

芹菜素、木犀草素和异槲皮甙的峰面积与浓度分别在0.001250~0.8000，0.002500~0.1000和0.002500~0.1000 gL^(-1)，浓度范围内呈良好的线性，线性相关系数分别为0.9995，0.9995和0.9981。

Objective to establish a method for simultaneous determination of rutin, hyperin, isoquercitrin, 4,5-O-dicaffeoyl quinic acid and isorhamnetin-3-O-glucoside in Herba Artemisiae Capillariae.

目的 建立同时测定茵陈中芦丁、金丝桃苷、异槲皮苷、4，5-O-二咖啡酰奎宁酸、异鼠李素－3-O-葡萄糖苷含量的方法，为茵陈药材的质量控制提供依据。

Through spectrographical identification, isoquercitrin prepared by this invention is ascertained that its structure is meletin-3-O- beta-D-glucopyranose, its purity is determined by purity angle which is less than purity threshold. Purity of this compound is above 99 percent through computation, corresponding to requirement of control article.

以本发明制备的罗布麻甲素经过光谱鉴定确证其结构为槲皮素-3-O-β-D-吡喃葡萄糖苷，其纯度经纯度角测定后，纯度角小于纯度阈值，经计算该化合物纯度为99％以上，符合对照品要求。

Results The linear response range was 0.9420-18.84mg L^(-1)(r=0.9995), 1.190-23.79 mg L^(-1)(r=0.9995), 1.107-22.14 mgL^(-1)(r=0.9994), 56.78-1.136×10^3 mgL^(-1)(r=0.9990) and 0.6219-12.44 mgL^(-1)(r=0.9998), respectively (n=5). The average recoveries (n=9) of rutin, hyperin, isoquercitrin, 4, 5-O-dicaffeoyl quinic acid and isorhamnetin-3-O-glucoside were 98.1%, 100.7%, 98.4%, 100.2% and 101.7%, respectively.

结果 芦丁、金丝桃苷、异槲皮苷、4，5-O-二咖啡酰奎宁酸、异鼠李素－3-O-葡萄糖苷质量浓度分别在0.942~18.84mgL^(-1)(r=0.9995)、1.190~23.79mgL^(-1)(r=0.9995)、1.107~22.14mgL^(-1)(r=0.9994)、56.78~1.136×10^3 mgL^(-1)(r=0.9990)、0.6219~12.44mgL^(-1)(r=0.9998)内与峰面积呈良好的线性关系(n=5)；方法回收率(n=9)分别为98.1%、100.7%、98.4%、100.2%、101.7%。

It can be used for determination of the content of quertetin and kaempferol in Kudindcha tablets.

结论该方法简便、快速、准确，可作为苦丁茶含片中槲皮素和山柰素的含量测定方法。

Concentrations of kaempferol and quercetin were lower.

浓度的山萘酚和槲皮素的lower。

This paper further determinated the content of quercetin and Kaempferol.

本文进一步测定了槲皮素和山奈素的含量，增加了全蚕粉的指标性成分，对家蚕的药用开发和综合利用都具有重要的意义。

Objective To develop an HPLC method for simultaneous determination of quercetin and kaempferol in Tetrastigmatis hemsleyani.

目的 建立同时测定三叶青中槲皮素和山奈酚的HPLC方法。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。