槲皮醇

Results β-Stigmasterol (1), quercetin (2), myricetin 3'-methyl ether (3), syringetin-3-0-α-L-arabinofuranosid (4), ardicrenin (5) and ardisiacrispin A (6) were isolated and identified.

结果 分离并鉴定出6个化合物：β-豆甾醇(1)、槲皮素(2)、3'-甲基杨梅黄酮(3)、丁香亭－3-O-α-L-阿拉伯呋喃糖苷(4)、ardicrenin(5)和ardisiacrispin A(6)。

Quercetin,a flavonol with o-dihydroxy-benzene wasdetermined as one of major pigment of 'Concolor' wintersweet petal.

经鉴定，具邻二酚羟基的黄酮醇――槲皮素为蜡梅花瓣主要色素之一，并测定了其动态。

A SPE procedure was suggested for extracting and concentrating fisetin by using different volume fractions of ethanol in aqueous solution as the loading conditions.

分别以中药黄栌的主要成分非瑟酮为印迹分子、丙烯酰胺为功能单体及乙二醇二甲基丙烯酸酯为交联剂，通过封管聚合法合成了分子印迹聚合物；将其装于自制的固相萃取柱中，研究了以不同体积比的乙醇-水溶液为溶剂时非瑟酮在柱上的保留行为；通过优化清洗及洗脱条件，使非瑟酮与它的结构相似物槲皮素在柱上得到了很好的分离。

The TLC systems can be used to isolate and identify querctin and β-sitostero in Gynura divaricata.

以上薄层色谱条件可以较好地分离和鉴别白子菜中的槲皮素和β－谷甾醇。

Result The 7 compounds of Illicium wardii A. C. Smith fruits were β-sitosterol, daucosterol, ursolic acid, 4, 12-Di-O-methylillicinone C, 11-Epi-illicinone E, quercetin and shikimic acid.

结果］贡山八角果实中的7个化合物是β-谷甾醇、胡萝卜苷、乌索酸、4， 12-Di-O-methylillicinone C、11-Epi-illicinone E、槲皮素、莽草酸。

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。

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。

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。