title: Phenolic constituents of the Chilean herbal tea Fabiana imbricata R. et P.
abstract: "Pichi" or "pichi romero" (Fabiana imbricata R. et. P., Solanaceae) is a Chilean plant used as a tea in the Andean regions of Chile and Argentina. A very simple and direct method was developed for the qualitative analysis of polyphenols in the tea by high-performance liquid chromatography (HPLC) with diode array detection and electrospray ionization tandem mass spectrometry. The phenolic constituents identified in the teas were chlorogenic acid (3-O-caffeoylquinic acid), p-hydroxyacetophenone, scopoletin and quercetin derivatives. The glycosides were mainly glucosides from p-hydroxyacetophenone and scopoletin while di- and tri-glycosides from quercetin were the main flavonoids. The content of the main phenolic compounds in the teas (g/100 g lyophilized infusion) was 0.8-1.9 % for scopoletin, 0.4-6.2 % for p-hydroxyacetophenone and 2.1-4.3 % for rutin, respectively. The health-promoting properties reported for this herbal tea can be associated with the presence of several phenolics with known antioxidant, diuretic and antiinflammatory activity.
authors.affiliation: Instituto de Química de Recursos Naturales, Laboratorio de Química de Productos Naturales, Universidad de Talca, Casilla 747, Talca, Chile. equispe@utalca.cl
authors.forename: Cristina
authors.initials: C
authors.lastname: Quispe
authors.forename: Ezequiel
authors.initials: E
authors.lastname: Viveros-Valdez
authors.forename: Guillermo
authors.initials: G
authors.lastname: Schmeda-Hirschmann
mesh_terms: D000098:Acetophenones / Q000032:analysis; D001118:Argentina; D001628:Beverages / Q000032:analysis*; D002677:Chile; D002726:Chlorogenic Acid / Q000032:analysis; D005419:Flavonoids / Q000032:analysis*; D006027:Glycosides / Q000032:analysis; D006801:Humans; D010636:Phenols / Q000032:analysis*; D028321:Plant Preparations / Q000737:chemistry*; D011794:Quercetin / Q000032:analysis; D012431:Rutin / Q000032:analysis; D012603:Scopoletin / Q000032:analysis; D019657:Solanaceae / Q000737:chemistry*
chemical_list: D000098:Acetophenones; D005419:Flavonoids; D006027:Glycosides; D010636:Phenols; D028321:Plant Preparations; D002726:Chlorogenic Acid; D012431:Rutin; D011794:Quercetin; C031335:4-hydroxyacetophenone; D012603:Scopoletin