查询词典 sitosterol

Second, seperate sinalbin, sinapine, 3 -sitosterol, from extract of Brassica albas seeds.

从白芥子提取物中分离得白芥子苷、白芥子碱、β-谷甾醇(β-sitosterol)。

Grape fruits could directly transfer into β-Sitosterol in grape wine and true grape wine could be identified by the existence of β-Sitosterol.

葡萄酒中的β-谷甾醇是由葡萄果实直接转化而来的，可根据β-谷甾醇的存在来鉴别真假葡萄酒。

Two of them are β-sitosterol and β-sitosterol-3-O-β-D-glucopyranoside.

经过理化性质测定和光谱分析，确定其中He为β-谷甾醇，Hi为β-胡萝卜甙，其余产物正在鉴定中。

Methods The β-sitosterol and/or total protein of Pinella were incubated at different concentrations with cervical cancer cell line SiHa. The effects of β-sitosterol and/or total protein of Pinella on the viability of cells were tested by MTT assay.

在子宫颈癌细胞SiHa的培养基中加入不同浓度的β-谷甾醇和／或掌叶半夏总蛋白培养1~7d，采用MTT比色法检测细胞的活性。

Keywords β-sitosterol;β-sitosterol derivative;synthesis;structure characterization

谷甾醇；β-谷甾醇衍生物；合成；结构表征

Results Seven known compounds: ocotillol (1), ursolic acid (2), betulin (3), lupeol (4), 1β-hydroxy-lupeol (5),β-sitosterol (6) and sitosterol-4-en-3-one (7) were isolated.

结果 分离得到7个化合物，分别鉴定为：20S，24R-环氧达玛烷－3β，25-二醇(ocotillol， 1)、熊果酸(2)、白桦脂醇(3)、羽扇豆醇(4)、1β-羟基羽扇豆醇(5)、β-谷甾醇(6)、谷甾－4-烯－3-酮(7)。

The hemisuccination process and kinetics ofβ-sitosterol and stigmasterol with succinic anhydride The reaction product ofβ-sitosterol and stigmasterol with succinic anhydride were characterized by elemental analysis,~1H NMR and ~(13)C NMR.

应用高效液相色谱对混合植物甾醇琥珀酸酯化产物中各组分的含量进行了分析测定。实验结果表明，各种植物甾醇琥珀酸单酯的分离效果较好，响应时间在10min左右，面积归一法能够快速准确地用于该过程的分析测试。

The result showed that caffeic acid (PA4) and 3-O-coumaroyl-β-sitosterol (PE1) appeared to be most synergistic compounds for combining with other compounds and chlorogenic acid (PA6) was the most antagonistic compound with other compounds on the growth inhibition of A549, a human lung cancer cell line; while any 2-compound combinations of palmitic acid, 5-hydroxy-7-methoxy- 4'-acetylisoflavone and stigmasterol (S1) appeared to be synergistic on the growth inhibition HT-29, a human colorectal cancer cell line.

由两种化合物组合的结果发现，咖啡酸(caffeic acid；PA4)或3-O-coumaroyl-β-sitosterol (PE1)与其他化合物组合时，对於抑制A549细胞增生方面有相乘的作用，另一方面，绿原酸(chlorogenic acid；PA6)与其他化合物组合时，有强烈的拮抗作用。

The result of chemistry show-colour analysis shows ,β―sitosterol extract was soluted in chloroform , and add vitriol , the interface of double liquid layer showed rose colour .β―sitosterol extract was soluted in acetic acid and add three chloridize iron--acetic acid—vitriol solution , it showed blue , then became pansy .

显色反应的结果显示，β―谷甾醇提取物于氯仿和浓硫酸反应后呈现玫瑰红色，与三氯化铁-乙酸-浓硫酸溶液反应后呈现蓝色，再变为紫罗兰色。

Coumarinyloxy)-6-methoxyl-7-hydroxycoumarin,β-sitosterol, 3-stigmast-5-en-3- 3 -D-Glucopyranoside . 3-(7-coumarinyloxy)-8-(7-hydroxycoumarin-8-yl)-7-hydroxycoumarin rhamnoside and Sucrose. Compound I , V, IX and XI were isolated from barks and stems of this plant for the first time and compound VI and VI were isolated from flowers of this plant for the first time, too.

共鉴定了其中11个化合物，根据理化性质和波谱数据鉴定确定为：丁香甙，结香甙C(Edgeworoside C Ⅱ)，7-羟基香豆素(7-hydroxycoumarin Ⅲ)，5，7-二甲氧基香豆素(5，7-dimethoxycoumarin Ⅳ)，卫矛醇，异吲哚-1，3-二酮1H-iso-Indole-1，3(2H-dione Ⅵ，西瑞香素(Daphnoretin Ⅶ)，β-谷甾醇(β-sitosterol Ⅷ)，胡萝卜甙(Daucosterol Ⅸ)，结香甙A(Edgeworoside A Ⅹ)和蔗糖。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐