黑苦荞茶中6种微量元素溶出率的研究
Journal of Qinghai Normal University(2015)
Abstract
利用火焰原子吸收光谱法测定四川凉山州黑苦养茶茶液中的铁、镁、锌、钙、钾、锰6种元素的溶出率.结果表明:茶叶中含有丰富的微量元素,各元素含量从高到低依次是:K>Ca>Fe> Mg> Zn> Mn;各元素溶出率从高到低依次为:Mg>K>Mn>Fe> Zn> Ca;相同条件下,不同元素的溶出率与该元素在茶叶中存在形态相关;所有元素均在初泡茶液中含量最高,此后溶出率随浸泡次数增加而降低.
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