在各种各样含有儿茶素（表没食子儿茶素没食子酸酯）的茶叶中，绿茶的儿茶素含量最高。
While all true teas contain EGCG (epigallocatechin-3-gallate), the various types of green tea have the most.
目的检测参加军事演习人员演习前和演习后尿儿茶酚胺含量，以探讨应激状态下尿中儿茶酚胺含量的变化。
Objective to detect the catecholamine content in urine of personnel before and after military manoeuvres to find out the change of catecholamine under stress.
在酶促氧化条件下，对模拟苹果酒体系中，儿茶素、表儿茶素、绿原酸和咖啡酸这四种单酚进行氧化聚合反应实验。
Under the condition of enzymatic oxidation, it was studied by the experiment of oxidative polymerization of catechin, epicatechin, chlorogenic acid and caffeic acid in the cider model system.
说明在非酶促氧化过程中，儿茶素和表儿茶素是在苹果酒酿造后期及陈酿过程中起主要作用的酚类物质。
It was proved that catechin and epicatechin had a leading role during the final fermentation and storage of ciders in the process of non-enzymatic oxidation.
目的：研究儿茶及儿茶提取物的质量标准。
AIM: To study the quality standard on catechu and its extract.
采用紫外分光光度法测定儿茶及儿茶提取物中活性鞣质的含量。
UV spectrophotometry was applied to determine the contents of active tannic acid in catechu and its extract.
苦涩味均较强的果实其绿原酸、儿茶素、表儿茶素、根皮素和原花青素含量最高。
In fruits with both astringent and bitter taste, the contents of chlorogenic acid, catechin, epicatechin, phloridzin, and procyanidins were the highest.
对不同季节茶树新梢不同部位鲜叶中儿茶素组分和非酯型儿茶素合成酶的变化规律进行了研究。
The changes of non-galloylated catechins and relative enzymes as well as the composition of catechins in different parts of tea shoots and in different seasons were investigated in this paper.
分析用各种提取方法制得的茶汁儿茶素单体，结果显示：鲜茶汁里egc占儿茶素总量的比例远高于常规干茶中egc占到的比例。
Analysising the monomer of the catechins in the juice. The result showed as bellow: the ratio of the EGC in total catechins is far higher than the normal in the made tea infusion.
儿茶棕染料是从一种名为儿茶的木材中提取的，这种树主要生长在印度等地。
The brown dyestuffs of Catechu are from a kind of name In order to draw in the timber of Catechu, this kind of tree mainly grows in India and other places.
以萘为底物生长时，ND6菌株的细胞提取液中既存在催化邻位裂解途径的儿茶酚1，2-双加氧酶活性，也存在催化间位裂解途径的儿茶酚2，3-双加氧酶活性。
When naphthalene was used as a substrate for growth of strain ND6, catechol 1,2-dioxygenase and catechol 2,3-dioxygenase activities were both detected in their crude extract.
以萘为底物生长时，ND6菌株的细胞提取液中既存在催化邻位裂解途径的儿茶酚1，2-双加氧酶活性，也存在催化间位裂解途径的儿茶酚2，3-双加氧酶活性。
When naphthalene was used as a substrate for growth of strain ND6, catechol 1,2-dioxygenase and catechol 2,3-dioxygenase activities were both detected in their crude extract.
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