作者: Kosuke Kurumano , Mai Yoshida , Shuhei Kameyama , Takeshi Minami
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摘要: The concentrations of elements in Chinese tea infusions after both one-minute and overnight extractions were measured the contents compared with those leaves. Leaves from 13 plants ten provinces China collected; seven green tea, four oolong two black tea. When major elements, Ca, Fe, K, Mg, P, S, Zn, measured, leaves did not differ, except for Zn. Ca content infusion tended to be high. Furthermore, when infused overnight, elemental differed depending on percentage K was highest approximately 100 % extracted infusion. sixteen rare earth nine detected: Sc detected all leaves, Pr ten, Tm Y nine, La In contrast, 8 out teas one minute, seven, Ce five, four, Nd three, one. eleven teas, Ce, Nd, eight, three. From these results, is easily it thought that are included many eluted into a infusion, even if time only minute.