类黄酮

The proposed method surpassed other chromatographic alternatives in terms of limit of detection at least 10~3 folds with good reproducebility. Chapter 4 A capillary zone electrophoresis with indirect LIF detection method is developed for the simultaneous determination of six coumarin compounds (esculin, esculetin, isofraxidin, genistein, naringin and sophoricoside).

第四章建立了一种毛细管区带电泳—间接激光诱导荧光检测法同时测定6种黄酮类化合物(秦皮甲素、秦皮乙素、异秦皮定、染料木素、柚皮苷和槐角苷)的新方法，扩大了LIF检测的应用范围。

BACKGROUND: Cristata L flavonoid is a kind of plant estrin, which possesses multiple physiological function, has no toxicity and adverse effect, and is effective in treating and preventing osteoporosis.

背景：鸡冠花黄酮类化合物是一种植物性雌激素，具有多种生理功能，且无毒副作用，对骨质疏松的治疗和预防都具有良好干预效果。

This paper summarizes research adcance of flavonoids in medical value and methods of exaction and separation from different kinds of plants.

对黄酮类化合物的药用价值、提取工艺、分离方法等方面进行综述。

The extracting technology of flavone by microwave from bamboo leaf was studied in the paper.

对竹叶黄酮类物质的微波提取工艺进行了研究。

The flavone may be the main material of antioxidant activity.

黄酮类化合物可能是其抗氧化作用的主要物质基础。

It is an ideal way to extract the flavone of onion.

结论该方法采用全物理过程，无任何化学变化及污染，是提取洋葱黄酮类物质的有效途径。

Chitin, polysaccharide, vitamin and flavonoid were main anti-mutation functional factors of white wax scale.

甲壳素、多糖、维生素和黄酮类物质应为抗突变作用的主要功效成分。

The experimental results showed that pinocembrin, chrysin and galangin were the main flavonoids in Chinese propolis.

实验结果表明：乔松素、白杨素和高良姜素是中国蜂胶的主要黄酮类化合物；我国不同产地的蜂胶主要化学成分基本相同。

Eight kinds of flowers were selected including Lily, Honeysuckle, Globe amaranth, Tribute Chrysanthemum, tea plant flower, Rose, Hibiscus sabdariffa and Saffron.

选用八种常见饮用花卉，如百合花、金银花、千日红、贡菊、茶花、玫瑰花、玫瑰茄、藏红花，分别采用电感耦合等离子体发射光谱法和三氯化铝比色法检测其微量元素和黄酮类化合物的舍量。

In fact, the flavonoids occur in nature as their glycoside derivatives in which one or more sugar groups are attached to the phenolic groups

事实上，黄酮类化合物性质上属糖苷衍生物，它们出现时有一或多组糖与石碳酸组结合。

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