HPLC Method to Assay Total Saponins in Ilex paraguariensis Aqueous Extract

نویسندگان

  • Simone C.B. Gnoatto
  • Eloir P. Schenkel
  • Valquiria L. Bassani
چکیده

Ilex paraguariensis St. Hilaire é uma espécie sul-americana da qual ramos e folhas são utilizados para o preparo de uma bebida de grande consumo em alguns países da América do Sul. A planta é conhecida como “erva-mate” em português ou “yerba-mate” em espanhol. Tendo em vista o potencial uso das saponinas como tensoativo bem como o seu potencial terapêutico, o presente trabalho propõe um método de extração e quantificação para as saponinas presentes em Ilex paraguariensis. As saponinas foram extraídas por decocção, hidrolisadas e quantificadas por CLAE e detecção em UV. A concentração de saponinas foi expressa em ácido ursólico (saponinas totais). O método cromatográfico mostrou linearidade na concentração de 13,5 a 135 μg mL. O extrato aquoso apresentou uma concentração de saponinas totais de 352 μg mL. Os resultados sugerem a possibilidade de adaptação do método para doseamento de saponinas com núcleo triterpênico em extratos de outras plantas.

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تاریخ انتشار 2005