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Chemical composition of hydroethanolic extracts from Siparuna guianensis, medicinal plant used as anxiolytics in Amazon region
Negri, Giuseppina; Santi, Daniel de; Tabach, Ricardo.
Afiliação
  • Negri, Giuseppina; Universidade Federal de São Paulo. Departamento de Psicobiologia. BR
  • Santi, Daniel de; Universidade Federal de São Paulo. Departamento de Psicobiologia. BR
  • Tabach, Ricardo; Universidade Federal de São Paulo. Departamento de Psicobiologia. BR
Rev. bras. farmacogn ; 22(5): 1024-1034, Sept.-Oct. 2012. ilus, tab
Article em En | LILACS | ID: lil-649634
Biblioteca responsável: BR1.1
ABSTRACT
Siparuna guianensis Aubl., Siparunaceae, is used as anxiolytic plants in folk medicine by South-American indians, "caboclos" and river-dwellers. This work focused the evaluation of phenolic composition of hydroethanolic extract of S. guianensis through HPLC-DAD-ESI/MS/MS. The constituents exhibited protonated, deprotonated and sodiated molecules and the MS/MS fragmentation of protonated, deprotonated and sodiated molecules provided product ions with rich structural information. Vicenin-2 (apigenin-6,8-di-C-glucoside) was the main constituent found in S. guianensis together quercetin-3,7-di-O-rhamnoside and kaempferol-3,7di-O-rhamnoside. A commercial extract of Passiflora incarnata (Phytomedicine) was used as surrogate standard and also was analyzed through HPLC-DAD-ESI/ MS/MS, showing flavones C-glycosides as constituents, among them, vicenin-2 and vitexin. The main constituent was vitexin. Flavonols triglycosides was also found in low content in S. guianensis and were tentatively characterized as quercetin-3O-rutinoside-7-O-rhamnoside, quercetin-3-O-pentosyl-pentoside-7-O-rhamnoside and kaempferol-3-O-pentosyl-pentoside-7-O-rhamnoside. Apigenin and kaempferol derivatives had been reported as anxiolytic agents. Flavonoids present in this extract were correlated with flavonoids reported as anxiolytics.
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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Idioma: En Revista: Rev. bras. farmacogn Assunto da revista: FARMACIA Ano de publicação: 2012 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil

Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Idioma: En Revista: Rev. bras. farmacogn Assunto da revista: FARMACIA Ano de publicação: 2012 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil