巴西市售茶饮中 12 种微量元素的调查
Investigation of twelve trace elements in herbal tea commercialized in Brazil.
机构信息
Institute of Food Technology, Av. Brasil 2880, Jd. Chapadão, P.O. Box 139, 13070-178, Campinas, SP, Brazil; Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
Institute of Food Technology, Av. Brasil 2880, Jd. Chapadão, P.O. Box 139, 13070-178, Campinas, SP, Brazil.
出版信息
J Trace Elem Med Biol. 2019 Mar;52:111-117. doi: 10.1016/j.jtemb.2018.12.004. Epub 2018 Dec 8.
In this study twelve trace elements were investigated in herbal tea commercialized in Brazil. Boldo, Chamomile, Mate and Peppermint tea samples were acquired in Brazil local markets and both herbs and their infusions were evaluated. Trace elements were classified in two groups: poorly (Al, As, Ba, Cd, Cr, Fe, Pb and Se) and moderately (Cu, Mn, Ni and Zn) extractable. This patterned showed that even levels above threshold established by Brazilian and MERCOSUR regulations were observed in herbal tea (Cd and Pb in 89% and 78% of mate and peppermint tea samples, respectively), their infusions did not presented toxic levels. The estimative of exposure and dietary intake revealed important values for a daily consumption of a single cup of herbal infusion and an unique composition was also verified for herbal tea samples: although age and origin was unavailable, multivariate analysis classified the samples in four distinct groups.
本研究调查了巴西商业化草本茶中的 12 种微量元素。在巴西当地市场购买了 Boldo、洋甘菊、马黛茶和薄荷茶样本，并对草药及其浸液进行了评估。微量元素分为两组：不易提取（Al、As、Ba、Cd、Cr、Fe、Pb 和 Se）和中度提取（Cu、Mn、Ni 和 Zn）。这种模式表明，即使在巴西和南方共同市场规定的阈值以上，也观察到了草药茶中的水平（89%的马黛茶和 78%的薄荷茶样本中的 Cd 和 Pb），但其浸液并未呈现出毒性水平。暴露和膳食摄入量的估计值显示，对于每天饮用一杯草药浸液的摄入量来说，这是一个重要的数值，并且还验证了草药茶样本的独特组成：尽管年龄和来源不可用，但多元分析将样本分为四个不同的组。
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