Influence of the extraction methodology on the methylxanthines content of maté (Ilex paraguariensis a. St.-Hil., aquifoliaceae)

Quimica nova

Schenkel, Eloir P.¹  Gnoatto, Simone C. B.²  Bassani, Valquiria L.²  Coelho, Geraldo C.³ 

[1] Universidade Federal de Santa Catarina, Florianópolis, Brasil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil;Universidade de Ijuí, Ijuí, Brasil

关键词: mate;    Ilex paraguariensis;    methylxanthines.;   

DOI  :  10.1590/S0100-40422007000200012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Ilex paraguariensisA. St. -Hil. is a native species of southern South America. The caffeine contentin Ilex paraguariensis leaves has been considered an important qualityparameter for maté-derived products. In this work different extractionmethods for the determination of these methylxantines are compared. The influenceof the extraction conditions on the methylxanthine yields was evaluated. Extractionby decoction with acidic aqueous solution (H2SO4 4N) presentedthe higher efficiency in the theobromine extraction. The extraction in a Soxhletwith acidic aqueous solution and decoction with acidic aqueous solution showedthe highest caffeine yield. For the concomitant theobromine and caffeine quantification,the decoction with acidic aqueous solution is suggested.

【 授权许可】

CC BY