类黄酮

A high-performance liquid chromatographic method for the simultaneous separation and determination of aryltetralin lignans and flavonoids in Podophyllum emodi Wall.var. chinesis Sprague was developed. The separation was performed on a Kromasil-C 18 column by gradient elution with phosphate buffer-methanol (0-13min, 50∶50, 33min, 30∶70) as mobile phase at a flow-rate of 0.8 ml/min, with detection 270nm.

首次建立了桃儿七中苦鬼臼葡萄糖甙、4-去甲基鬼臼脂素、表鬼臼脂素、苦鬼臼脂素、苦鬼臼酯酮、鬼臼脂素、鬼臼酯酮、去氧鬼臼脂素、去氢鬼臼脂素等9种木脂素以及山柰酚、槲皮素等2种黄酮类组分同时分离测定的高效液相方法。

The studies on separation of antibacterial substances and the identification by GC-MS indicate that: Eleocharis Tuberoses peel contains cholesterol, organic acids, eaters and flavonoids four types of active ingredients, and 11kinds of active material.

对荸荠皮抑菌物质纯化后进行的GC-MS鉴定结果显示：荸荠皮抑菌物质中含有甾醇类、有机酸类、酯类和黄酮类4类活性成分共11种活性物质。

Characteristics of Inclusions: After the tea is kept for a long period of time in a stall and deep fermentation processing begins, the specialties of material and manufacturing make many bioreactions occur for thorough activation of microbes to excrete extra-cellular enzymes, which impacts over 500 stuffs of tea. Theses microbes contain catechin, polyphenols, amylase, cellulose, protein, lipid ,alcohol, ketone, vitamin, microorganism, and organic acid, making them transform, isomerize and degrade, polymerize and couple, so as to produce amylase, thearubigins, theaflavins, cellulose, and microelements that other commercial teas could not produce or produce too little.

三、 内含物的特点：由于原料、制造的特别性，经长期陈化和深发酵的过程，茶叶内含物发生多种生物生化反应，充分激活微生物分泌胞外酶，作用于茶叶中的内含儿茶素、多酚、多糖、纤维素、植物素、蛋白质、脂类、醇类、酮类、维生素、微量元素、有机酸等500多种物质，使之转化、异构降解聚合耦联，生成其他商品茶无法比拟和缺乏的多糖、茶红素、茶黄素、纤维素、微量元素等，并形成以菇稀醇类为主体香气。

Results: Two of them may contain the same chemical component patterns, polyose, acid tannic, phenols, organic acid, flavonoids, anthraquinone, cardiac glycoside, triterpenoids and its saponin etc.

结果：两者所含的化学成分类型基本相同，可初步确定其可能含有多糖、鞣质、酚类、有机酸、黄酮类、蒽醌类、强心苷、三萜类化合物及其皂苷等化学成分。

The chemical constituents from Primulaceae plants are mainly flavonoids, terpenoids, sterols, organic acids, quinines, etc. These plants have effects of lowering serum uric acid level in mice, promoting bile secretion in rats, reducing bile pigment stones formation rate, immune regulation and so on.

报春花科植物中主要化学成分有黄酮类、萜类、甾醇类、有机酸类、醌类等；药理活性主要有降低小鼠的血清尿酸水平，促进大鼠胆汁分泌，减少胆色素结石的成石率，免疫调节功能等。

Flavonoid natural dyes are an important class of natural colorants, but they have some drawbacks such as lower substantivity to fiber and relatively small molar extinction coefficient; pyrazolone azo dyes have been widely applied for a long time, however, their fixation on fiber is still not perfect.

黄酮类天然染料是极其重要的一类天然色素，但存在对纤维亲和力差，摩尔消光系数低等诸多缺点：吡唑啉酮类偶氮染料尽管被长期广泛应用，但在纤维上的固色率仍不理想。

Scopoletin ameliorated the scopolamine induced on water maze and elevated plus maze in rats.

此作用与其含有较多之多酚类、黄酮类及香豆素类成分有关。

These plants have effects of lowering serum uric acid level in mice, promoting bile secretion in rats, reducing bile pigment stones formation rate, immune regulation and so on.

报春花科植物中主要化学成分有黄酮类、萜类、甾醇类、有机酸类、醌类等；药理活性主要有降低小鼠的血清尿酸水平，促进大鼠胆汁分泌，减少胆色素结石的成石率，免疫调节功能等。

Phytochemical investigation on the acetone extract of the stems of K.oblongifolia led to the isolation of 49 compounds and 31 of them were identified.They were 20 lignans,(including 11 dibenzocyclooctadienes,8 spirobenzofuranoid dibenzocycloocta -dienes,1 other lignan),9 flavones,and 1 nortriterpenoid.Among them,4 were new compounds,1 was new natural products,and 8 compounds were isolated from this family for the first time.

通过对冷饭藤的藤茎化学成分的研究，从丙酮提取物中分离得到49个化合物，鉴定了31个化合物，包括木脂素类化合物20个(联苯环辛烯类木脂素11个，螺苯骈联苯环辛烯类木脂素8个，其他类型木脂素1个)，黄酮类化合物9个，降三萜类化合物1个，其中。4个为新化合物，1个新的天然产物，8个为本科首次报道。

The bamboo liquid, which is called magic water and whose PH is 3-4, has a pleasant smell. It is a kind of bluish yellow or yellowish brown liquid which is formed while bamboos are burned and decomposed. It contains over 200 kinds of organic elements and 10 types of minerals. Its main elements are water, organic acid, phenol, ketone, alcohol.

竹酢液，日本称为魔法之水，呈酸性，PH值3-4，带天然熏香味，是竹材热解过程中得到的青黄色或黄棕色液体，其成分相当复杂含有200多种有机成分及数十种矿物质，其主要成分是水、有机酸、酚类、酮类、醇类等。

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