Multi-element analysis of mineral and trace elements in medicinal herbs and their infusions
Multi-element analysis of mineral and trace elements in medicinal herbs and their infusions
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DOI：
10.1016/j.foodchem.2012.05.002
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发表时间：
2012-11-15
期刊：
影响因子：
8.8
通讯作者：
Kozik, V.
中科院分区：
文献类型：
--
作者：
Pytlakowska, K.;Kita, A.;Kozik, V.
在波兰用于医疗目的的草药及其浸剂中测定了12种矿物质和微量元素（Al， B, Ba, Fe, Zn, Mn, Mg， K, Na， P, Cu， Sr和Ca），如洋甘菊（Matricaria chamomilla L），薄荷（Mentha xpiperita），茉莉（melissa officinalis），鼠尾草（Salvia officinalis），荨麻（Urtica dioica），椴树（Tilia vulgaris）和圣约翰草（Hypericum calycinum）。采用干法消化法测定总浓度，湿法消化法测定浸剂溶出度。采用ICP-OES法测定中药及其浸剂中的元素浓度。用NCS DC 73349灌木枝叶认证标准物质进行了准确度和精密度验证。草本植物叶片中元素总浓度的测定结果表明，除K和P外，所有草本植物的元素含量均在μ g/g范围内，且各元素含量差异较大。此外，根据提取效率的实验结果，将中药浸剂中的元素分为3个特定的组：高可提取（>55%），包括K；中等可萃取（20-55%），包括Mg、Na、P、B、Zn和Cu，较难萃取(
Twelve mineral and trace elements (Al, B, Ba, Fe, Zn, Mn, Mg, K, Na, P, Cu, Sr, and Ca) were determined in the herbs and their infusions consumed for medical purposes in Poland such as chamomile (Matricaria chamomilla L), peppermint (Mentha xpiperita), melissa (Melissa officinalis), sage (Salvia officinalis), nettle (Urtica dioica), linden (Tilia vulgaris) and St. John's wort (Hypericum calycinum). Dry digestion procedure for total concentration and wet digestion procedure for infusions were applied under optimized conditions for dissolution of medicinal herbs. Element concentrations in herbs and their infusions were determined by ICP-OES. The accuracy and precision were verified against NCS DC 73349 - bush branches and leaves certified reference material. The result of total concentrations of elements in herb leaves shows that all herbs contain most of the elements, except K and P, in the mu g/g range, and that elemental concentrations varied widely. Moreover, on the basis of experimental results for the extraction efficiencies, the elements in herb infusions were classified into three specific groups: highly-extractable (>55%) including K; moderately-extractable (20-55%) including Mg, Na, P, B, Zn and Cu and poorly-extractable (