Influence of the extraction methodology on the methylxanthines content of mate (Ilex paraguariensis A. St.-Hil., Aquifoliaceae)

被引：31
|
作者：
Gnoatto, Simone C. B.
Bassani, Valquiria L.
Coelho, Geraldo C.
Schenkel, Eloir P.
机构：
[1] Univ Fed Rio Grande do Sul, Fac Farm, BR-90610000 Porto Alegre, RS, Brazil
[2] Univ Ijui, Dept Biol & Quim, BR-98700000 Ijui, RS, Brazil
[3] Univ Fed Santa Catarina, Dept Ciencias Farmaceut, BR-88040900 Florianopolis, SC, Brazil
来源：
QUIMICA NOVA | 2007年 / 30卷 / 02期
关键词：
mate; Ilex paraguariensis; methylxanthines;
D O I：
10.1590/S0100-40422007000200012
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
INFLUENCE OF THE EXTRACTION METHODOLOGY ON THE METHYLXANTHINES CONTENT OF MATE (Ilex paraguariensis A. ST.-HIL., AQUIFOLIACEAE). Ilex paraguariensis A. St. -Hil. is a native species of southern South America. The caffeine content in Ilex paraguariensis leaves has been considered an important quality parameter for mate-derived products. In this work different extraction methods for the determination of these methylxantines are compared. The influence of the extraction conditions on the methylxanthine yields was evaluated. Extraction by decoction with acidic aqueous solution (H2SO4 4N) presented the higher efficiency in the theobromine extraction. The extraction in a Soxhlet with acidic aqueous solution and decoction with acidic aqueous solution showed the highest caffeine yield. For the concomitant theobromine and caffeine quantification, the decoction with acidic aqueous solution is suggested.
引用
收藏
页码：304 / 307
页数：4
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