Evaluation of mineral composition of tea from senescent leaf of Montrichardia linifera (arruda) schott (araceae) by flame atomic absorption spectrometry (FAAS)

[摘要] Levels of Ca, Mg, Fe, Zn, Cu and Mn were determinated by FAAS in the tea and dry matter from senescent leaf from Montrichardia linifera, plant used in folk medicine Amazon. The content of these metals that are transferred of the leaf to the infusions have presented significant reductions, however, the Mn values in the infusion may exceed the tolerable daily intake (11 mg) if consumption of this tea is greater than 1.0 L per day. So the tea of senescent leaves of M. linifera may be considered as a toxic beverage and thus its use is not advised.

[学科分类] 化学（综合）

[关键词] Montrichardia linifera;tea;mineral composition.