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葡萄籽中含有的儿茶素是一种酚类抗氧化剂。Catechin is a phenol antioxidant found in grape seeds.

儿茶素属于多酚类的一种，其中以茶叶的含量最多。The catechin is one kind of polyphenol. It is made up of four isomers.

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杉树木质纤维素对酯型儿茶素类选择性吸附的研究。Study on the specific adsorption of catechin gallates by cedar lignocellulose.

这为儿茶素氧化聚合物的制取及分离提供了一条新思路。This HPLC method might provide a new way to separate oxy-polymers of catechin.

结果和结论有柚皮甙、橙皮甙和儿茶素硫酸酯的生成。Results and Conclusion Naringin , hesperidin and catechin sulfate were produced.

儿茶酚的效力是维生素C的100倍，是维生素E的25倍。Catechin is 100 times more potent than vitamin C and 25 times more potent than vitamin E.

论文首次对微生物降解落叶松单宁为儿茶素的过程进行了研究。Microbial degradative process from larch tannin to catechin was studied for the first time.

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该文首次用高效液相建立了帽蕊木茎皮中儿茶素质量分数的测定方法。To determine the mass fractions of catechin in the stem bark of Mitragyna rotundifolia Kuntze.

对超声辅助法提取茶多酚和儿茶素的条件进行了研究。Affecting factors of extracting tea polyphenols and catechin assisted by ultrasonic wave were investigated.

科学已经证明绿茶儿茶酚能限制形成过量胆固醇。It has been proven and demonstrated that green tea catechin restricts the excessive buildup of cholesterol.

绿茶儿茶酚，跟红茶里含有的一样，都对流行性病毒有很强的影响。Green tea catechin and theaflavin, which are both present in black tea, have a strong effect on the flu virus.

儿茶精发现了在导致食物中毒和杀害毒素由那些细菌生产的绿茶可能杀害细菌。Catechin found in green tea can kill bacteria which causes food poisoning and kills the toxins produced by those bacteria.

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同时，拥有抗病毒能力的绿茶酚可能在对抗艾滋病病毒上也有一些作用。It is also thought that the anti viral capability of green tea catechin may have some beneficial effect on the AIDS virus.

本文研究了茶叶儿茶素对发根农杆菌的抑制作用并进行了抗酚菌株的筛选。This paper investigated inhibition of Agrobacterium rhizogenes by tea catechin and screening of the anti-polyphenol strain.

结果表明，大叶种茶的儿茶素的抗氧化作用强于小叶种茶。The results show that the antioxidant ability of tea catechin of large leaf tea is more intense than that of small leaf tea.

费鲁齐目前正在从事一项研究，在实验室动物身上研究柑橘类果汁和维生素C是否能增加儿茶素的吸收水平。Ferruzzi is currently conducting a study examining whether citrus juices and vitamin C increase catechin absorption in lab animals.

此处，还发现茶叶中的咖啡碱和儿茶素类能使血管壁松弛，增加血管的有效直径，通过血管舒张而使血压下降。In addition, it is found that caffeine and catechin in dark tea can soften vessel and diastole vessel to realize blood pressure reduction.

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香草醛法测定了黄烷-3-醇单体和原花青素的总量，HPLC法测定了黄烷-3-醇单体的含量。Flavan -3 -ol and proanthocyanidin were determined by vanillin assay, expressed by catechin equivalents, and flavan-3-ol determined by HPLC.

由此可以认为，茶叶中影响N-亚硝化反应的主要成分为茶多酚，尤为茶儿茶素。Thus, it might be concluded that blocking effect on NPRO formation was mainly due to tea polyphenolic compounds especially tea catechin in tea.

白茶，特别是白毫银针，富含多种氨基酸和抗氧化剂-多酚中的儿茶素。White Tea, especially White Hair Silver Needle, has high contents of free amino acids and active antioxidants with catechin in its Tea Polyphenols.