查询词典 catechin

objectivethe differences of the catechin, ursolic, polysaccharide, and tannide from the different segments of the succulent stem of cynomorium songaricum rupr.

目的分析锁阳肉质茎不同部位儿茶素、熊果酸、多糖和鞣质含量的差异，以期为锁阳合理用药及人工优质栽培提供理论依据。

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。

Zhang said the flavonoids that appeared to be the most protective included catechin , found in strawberries and green and black teas; kaempferol , found in Brussels sprouts and apples; and quercetin , found in beans, onions and apples.

章启月说，黄酮类化合物似乎是最保护包括儿茶素，发现在草莓和绿色和红茶；山奈酚，发现在布鲁塞尔举行的豆芽和苹果；和槲皮素，发现在豆类，洋葱和苹果。

The rate constants of the reactions of α-hydroxyl ethyl peroxyl radicalwith quercetin, ruitn, catechin and baicalin were determined through pulse radiolysisstudies to be 〓,〓,〓〓 and 〓, respectively.

用脉冲辐解的方法得到槲皮素、芦丁、儿茶素以及黄芩甙与α-羟乙基过氧自由基的反应速率常数分别为〓；3.4〓；〓和〓。

A HPLC method was used for analyzing the changes of eight major constituents, namely gallic acid, paeoniflorin sulfonate, catechin, paeoniflorin sulfonate, albiflorin, paeoniflorin, benzoic acid, pentagalloylglucose and benzoylpaeoniflorin, with the three processing procedures of decorticating, boiling and fumigating by burning of sulphur.

采用高效液相色谱法分别分析经去皮、水煮和硫磺熏制3个不同加工阶段后，白芍中没食子酸、儿茶素、芍药苷亚硫酸酯、芍药内酯苷、芍药苷、苯甲酸、五没食子酰基葡萄糖和苯甲酰芍药苷等8种主要化学成分的变化。

The most important antioxidant in white tea is EGCG, a potent catechin that neutralizes the harmful free radicals in the cells.

最重要的抗氧化剂在白茶是儿茶素，儿茶素是一种有效中和有害自由基的细胞。

It could obtain the best performance of flux, retainment of tea composition and flavor under such operate condition.

经过热加工的茶汤在蓊游离胺基酸、还原糖、catechin、EGCg、ECG比膜过滤还高，但在清除DPPH和螯合亚铁离子的表现上，却比膜过滤还要佳。

Catechin, thearubigins, and theaflavins of Tibetan tea, and products of their oxidation, degradation and complexity, contain important elements to prevent cancer, and reduce cancer and mutation so as to maintain a strong ability to kill cancer cells. The tea is also noted to prevent forms of carcinogenic nitroso compound, and restrain some enzyme that could activate carcinogen. Tibetan tea is rich in many materials, such ascatechin,β-carotene, vitamin

防癌、抗癌藏茶中茶红素、茶黄素、儿茶素以及其氧化、降解、络合产物都是重要的防癌、抗癌、抗突变的成分，有很强的杀灭癌细胞的作用；对人体致癌性亚硝基化合物的形成具有阻断功效，能抑制某些能活化致癌原的酶系；藏茶富含的多种物质，如儿茶素、β—胡萝卜素、维生素B1、B2、C、E等都有抗癌的作用。

Changes of contents of phenolic compounds (catechin, quercetin, chlorogenic acid, ferulic acid) and indoleacetic acid, and changes of activities of polyphenoloxidase and peroxydase during the cuttings rooting were determined.

蛇足石杉分别扦插于原生境土壤和灭菌土壤上，调查其生根率，测定生根过程中吲哚乙酸、酚类化合物(儿茶酚、槲皮素、绿原酸、阿魏酸)、多酚氧化酶和过氧化物酶活性的变化。

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。