1·Singapore scientists found that catechins, a natural compound in tea, protect brain cells from damaging protein build-up over the years, maintaining the brain's cognitive capability.
新加坡研究人员发现，茶叶含有天然化合物儿茶酚，能阻止有害蛋白累积、保护脑细胞、维持大脑认知能力。
2·These are thought to adhere to a kind of polyphenols known as catechins, preventing them from carrying out their health-making work.
研究者认为它们会附着在一种叫儿茶酚的多酚上，使之无法发挥保健功效。
3·Catechins may also prevent DNA damage caused by carcinogens.
儿茶酚还可能预防致癌物质引起DNA损伤。
1·There are other questions too, including what dose of green tea catechins is ideal.
也有一些别的问题，包括多少剂量的绿茶儿茶素是理想的。
2·Atherosclerosis was induced in quails by feeding high lipid food and effect of catechins on development of atherosclerosis was observed.
用高脂饲料诱发鹌鹑动脉粥样硬化，观察了儿茶素对动脉粥样硬化模型的影响。
3·If you drink alcohol, a little red wine may be a heart-healthy choice. Resveratrol and catechins, two antioxidants in red wine, may protect artery walls.
如果你喝酒的话，一点红酒也许是对心脏有益的选择。红酒中含有两种抗氧化剂，白藜芦醇和儿茶素，可以保护血管壁。
4·Although there are many ways to prepare tea catechins, the solvent extraction and the iron-precipitation are mainly applied in the industrial technology.
制备儿茶素的方法很多，但目前工业化制备技术主要集中于溶剂萃取法和金属离子沉淀法。
5·Preparaing theaflavins from the oxidation of tea catechins in vitro simulated fermentation were studies. Two ways of preparing theaflavins was compared.
对儿茶素通过体外酶促氧化和化学氧化定向制备茶黄素进行了研究，并对两种制备途径进行了比较。