Abstract：
A solid phase chemical fractionation (SPCF) of the Mn in hot infusions prepared from commercial samples of roasted (RM) and green mate (GM) using a chelating resin Chelex 100 (NH4+ form) was performed to assess the relative lability of this essential trace element (ETE). In addition, total Mn contents in the RM and GM samples and their infusions were determined by flame atomic absorption spectrometry. Total polyphenol (TP) contents and the presence of soluble melanoidins (SM) were correlated with the Mn solubility in the RM and GM infusions. From the SPCF study, it was possible to observe that the soluble Mn forms in the mate infusions were essentially associated with relatively noninert chemical species (98.4-99.7%), suggesting that they may be potentially bioavailable. In addition, the soluble Mn contents in the GM infusions were 20.5% higher than those found in the RM. Mn solubility in the (RM) infusions was highly and directly correlated (r = 0.99) with the soluble TP, while in the GM infusions, it was high and inversely correlated with soluble TP (r = -0.87). On the other hand, Mn solubility in the RM and GM infusions was weakly correlated with the SM. It should be stressed that GM infusions can contribute with 57 and 44% more than the RM infusions to the recommended adequate intake of Mn established for females and males, respectively. Moreover, this work is the first to evaluate and compare the relative lability of Mn and its solubility in the RM and GM infusions.
摘要：
使用螯合树脂Chelex100（NH4形式）对从焙烧（RM）和绿色伴侣（GM）的商业样品制备的热输液中的Mn进行固相化学分馏（SPCF），以评估这种必需微量元素的相对不稳定性（ETE）。此外,用火焰原子吸收光谱法测定RM和GM样品及其输液中的总Mn含量。总多酚（TP）含量和可溶性类黑色素（SM）的存在与RM和GM输注中的Mn溶解度相关。根据SPCF的研究，可以观察到，在mate输注中的可溶性Mn形式基本上与相对非惰性的化学物质（98.4-99.7％）有关，表明它们可能具有潜在的生物可利用性。此外,转基因输液中的可溶性锰含量比RM中的可溶性锰含量高20.5%。Mn在（RM）输液中的溶解度与可溶性TP高度直接相关（r=0.99），而在转基因输液中，它与可溶性TP呈负相关（r=-0.87）。另一方面,RM和GM输注中的Mn溶解度与SM弱相关。应该强调的是，转基因输液可以比RM输液多57％和44％，以推荐的女性和男性锰摄入量。分别。此外，这项工作是第一个评估和比较Mn的相对不稳定性及其在RM和GM输注中的溶解度。
