title: Scientific validation of synergistic antioxidant effects in commercialised mixtures of Cymbopogon citratus and Pterospartum tridentatum or Gomphrena globosa for infusions preparation.
abstract: Pterospartum tridentatum (L.) Willk., Gomphrena globosa L. and Cymbopogon citratus (DC) Stapf. are examples of medicinal plants with antioxidant properties on their own, but that can be improved when mixed. In the present work, the antioxidant activity and phenolic compounds were determined in the infusions prepared from the individual plants, and from mixtures of these plants in different proportions. P. tridentatum > C. citratus > G. globosa was the order observed for antioxidant efficacy, which can be related to their different composition in phenolic compounds. Synergism was the main effect observed among the tested mixtures, mainly for the infusions prepared from the plants in proportion 40%:60% (either P. tridentatum and C. citratus; or G. globosa and C. citratus). The infusion obtained with 40% of P. tridentatum and 60% of C. citratus gave the highest antioxidant properties. The present study validates the commercialisation of the studied plants combined in specific proportions.
authors.affiliation: Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal.
authors.forename: Custódio Lobo
authors.initials: CL
authors.lastname: Roriz
authors.affiliation: Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal. Electronic address: lillian@ipb.pt.
authors.forename: Lillian
authors.initials: L
authors.lastname: Barros
authors.affiliation: Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal.
authors.forename: Ana Maria
authors.initials: AM
authors.lastname: Carvalho
authors.affiliation: GIP-USAL, Faculty of Pharmacy, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain.
authors.forename: Celestino
authors.initials: C
authors.lastname: Santos-Buelga
authors.affiliation: Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, 5301-855 Bragança, Portugal. Electronic address: iferreira@ipb.pt.
authors.forename: Isabel C F R
authors.initials: IC
authors.lastname: Ferreira
mesh_terms: D027703:Amaranthaceae / Q000737:chemistry*; D000975:Antioxidants / Q000032:analysis*; D050859:Betacyanins / Q000032:analysis; D031743:Cymbopogon / Q000737:chemistry*; D004357:Drug Synergism; D039761:Genista / Q000737:chemistry*; D010636:Phenols / Q000032:analysis*; D010936:Plant Extracts / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry; D015203:Reproducibility of Results
chemical_list: D000975:Antioxidants; D050859:Betacyanins; D010636:Phenols; D010936:Plant Extracts
keywords: Antioxidants; Cymbopogon citratus; Gomphrena globosa; Infusions; Phenolic compounds; Pterospartum tridentatum; Synergism