摘要
采用ICP-OES法测定了普洱茶和晒青毛茶中16种矿质元素的含量,分析了不同产地和不同等级普洱茶样品之间的差异。结果表明,普洱茶中16种矿质元素的含量分别为16.68(B)、3306.64(Ca)、272.18(Fe)、806.05(Al)、14522.80(K)、2054.96(Mg)、682.09(Mn)、0.25(Mo)、487.71(Na)、3628.98(P)、2350.90(S)、173.78(Si)、61.77(Zn)、2.48(Ni)、0.15 mg/kg(Co),Hg在全部样品中均未检出;10种矿质元素(Mn、Na、Zn、Ca、Fe、Al、K、Mg、Ni和Co)在普洱茶中的含量水平都要显著高于晒青毛茶(P<0.05);8种矿质元素(Ca、Fe、Al、K、Mg、S、Ni和Co)的含量水平在4个不同产地的普洱茶样品之间有显著差异(P<0.05);除Ni、Hg外,不同级别普洱茶矿质元素的含量无显著差异(P>0.05)。
The contents of sixteen mineral elements in Pu-erh tea and sun-dried green tea were determined by ICP-OES, and their contents differences in Pu-erh tea with different grades and in different producing areas were also compared. The contents obtained in mg kg-1 for the elements analyzed were 16.68（B）, 3306.64（Ca）, 272.18（Fe）, 806.05（Al）, 14522.80（K）, 2054.96（Mg）, 682.09（Mn）, 0.25（Mo）, 487.71（Na）, 3628.98（P）, 2350.90（S）, 173.78（Si）, 61.77（Zn）, 2.48（Ni）, 0.15（Co） and undetectable （Hg）. The contents of the Mn, Na, Zn, Ca, Fe, Al, K, Mg, Ni and Co in Pu-erh tea were observed to be much higher those in Sun-dried green tea（P〈0.05）. Significant differences in the content of Ca, Fe, Al, K, Mg, S, Ni and Co were observed in Pu-erh tea with different producing areas（P〈0.05）. However, there were no significant differences in the content of the studied elements except Ni in Pu-erh tea with different grades（P〉0.05）.
出处
《茶叶科学》
CAS
CSCD
北大核心
2013年第5期411-419,共9页
Journal of Tea Science
基金
国家自然科学基金(31000317)
关键词
普洱茶
矿质元素
产地
等级
含量
Pu-erh tea, mineral elements, producing area, grades, content
