It was proved that this method was convenient and precise, which could also be used for determination of catechins, theanine and alkaloid in tea and tea extracts.

该方法检测方便、定量准确，可用于茶叶及其提取物中多组分的同时分离检测，也可应用于茶叶尤其是绿茶的指纹图谱研究。

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Objective to investigate growth inhibitory effect of tea extracts on Helicobacter pylori in vitro.

目的探讨茶叶提取液对幽门螺杆菌的抑制作用。

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Black tea extracts are normally produced by a hot or boiling water extraction process usually a countercurrent process.

红茶的提取物通常是用热水或沸水通过逆流萃取工艺来制取的。

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Caffeine, guanine, taurine and green tea extracts all have these properties, says Ron Mendel, who has done research on diet drinks that combine these ingredients.

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Since October, the list of products that has entered the country from Japan included soybean curd, dried noodles, boiled mushrooms, radish paste, cooking sauces, roasted seaweed, flavouring extracts, tea bags, wheat flour, food additives and tofu.

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