槲皮素

The contents of total flavones in Marchantia convolute were determined through developed visible spectrophotometry. The reversed phase high performance liquid chromatography was set up to determine the contents of flavonoids in Marchantia convolute.

采用改进的铝盐显色分光光度法测定拳卷地钱总黄酮含量；采用反相高效液相色谱法测定拳卷地钱黄酮类化合物中芹菜素、槲皮素和木犀草素的含量。

Objective: To estabilish an RP-HPLC method for the determination of kaempferol, naringenin and quercetin in Euonymus alatus Thunb.

目的：建立同时测定鬼箭羽中降糖活性成分山柰酚、柚皮素及槲皮素含量测定的方法。

This method was applied to the determination of farrerol and quercetin in Folium Rhododend Daurici with good results.

本法可用于满山红样品中的槲皮素和杜鹃素的测定，结果满意。

Phenolics detected in C. incanus L. bee pollen belong to flavonol, flavanols (quercetin, kaempferol, galangin, and isorhamnetin), flavones and phenylpropanoids.

酚类物质检测长梅花湖蜂花粉属于黄酮，黄烷醇（槲皮素，山奈酚，高良姜素和异鼠），黄酮和苯丙。

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

The result of study showed that quercetin promotes the proliferation of melanocytes and synthesis of melania in the skin of guinea pigs.

槲皮素对棕黄色豚鼠背部皮肤有增色作用，具有促进黑素细胞增殖和黑素合成的功能。

Objective1 To study the effects of myricetin, quercetin and kaempferol on the activity of recombinant human phosphor-inositide 3-kinase (PI3K) p110β subunit.

目的：研究杨梅素、槲皮素和山萘黄素对重组人肌醇磷脂3-激酶(PI3K) p110β催化亚基的直接作用。

Results: Myricetin and quercetin other than kaempferol showed the inhibitory effects against p110β PI3K, and their IC50 was 2.93μmol/L and 9.91μmol/L, respectively.

结果：杨梅素和榭槲皮素对重组人PI3K p110β催化亚基有抑制作用，IC50分别为2.93μmol/L和9.91μmol/L，而山萘黄素对PI3K p110β催化亚基则无抑制作用。

In order to explore molecular mechanism and inhibitory effects of flavones and flavonols on human esophageal carcinoma cells, the inhibition of proliferation and the induction of G2/M cell cycle arrest in KYSE-510 cells and OE33 cells treated with three flavones and three flavonols (quercetin, kaempferol, myricetin) were analyzed by MTT array and flow cytometry.

为了探索它们对人食管癌细胞的抑制作用和分子机制，采用MTT法和流式细胞术，鉴定了3种黄酮(木犀草素、白杨素、芹菜素)和3种黄酮醇(槲皮素、山奈酚、杨梅素)对2株人食管癌细胞(鳞癌KYSE-510和腺癌OE33)的增殖抑制作用和G2/M周期停滞的诱导作用。

Specializing in natural plant research and development, production, sales and biosynthesis of the high-tech enterprise as a whole, the existing products: ursolic acid, luteolin, kaempferol, shikimic acid, salicylaldehyde glycosides, genistein, nuciferine , matrine, oxymatrine, quercetin ...

专门从事天然植物研究开发，生产，销售和生物合成为一体的高科技企业，现有产品：熊果酸，木犀草素，山奈酚，莽草酸，水杨甙，染料木素，荷叶碱，苦参碱，氧化苦参碱，槲皮素。。。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。