Evaluation of aluminum lability in yerba mate infusions by adsorptive cathodic stripping voltammetry

Química Nova

Anjos, Vanessa Egéa dos¹  Quináia, Sueli Pércio¹  Universidade Estadual de Ponta Grossa, Ponta Grossa, Brasil¹  Campos, Bruna Kauely de¹  Prazeres, Jéssica Pacheco dos¹  Torres, Yohandra Reyes¹  Universidade Estadual do Centro-Oeste, Guarapuava, Brasil¹ 

关键词: speciation;    aluminum;    tea;    1;    2-dihydroxyanthraquinone-3-sulfonic acid.;   

DOI  :  10.5935/0100-4042.20140226

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Infusions of yerba mate obtained at different stages of industrialization were evaluated to determine the bioavailable fraction of Al. Adsorptive Cathodic Stripping Voltammetry using DASA (complexing agent) was applied to determine the labile fraction of Al at pH 5.0 and pH 8.0 for the total fraction of dissolved Al. The results indicate that on average 60% of Al is complexed with organic compounds, minimizing their bioavailability; however, the labile fraction exceeds by up to 4 times the maximum weekly intake recommended by the World Health Organization.

【 授权许可】

Unknown