title: Chemical Composition and Antioxidant Activity of Euterpe oleracea Roots and Leaflets.
abstract: Euterpe oleracea(açaí) is a palm tree well known for the high antioxidant activity of its berries used as dietary supplements. Little is known about the biological activity and the composition of its vegetative organs. The objective of this study was to investigate the antioxidant activity of root and leaflet extracts ofEuterpe oleracea(E.oleracea) and characterize their phytochemicals.E.oleracearoots and leaflets extracts were screened in different chemical antioxidant assays (DPPH-2,2-diphenyl-1-picrylhydrazyl, FRAP-ferric feducing antioxidant power, and ORAC-oxygen radical absorbance capacity), in a DNA nicking assay and in a cellular antioxidant activity assay. Their polyphenolic profiles were determined by UV and LC-MS/MS.E.oleracealeaflets had higher antioxidant activity thanE.oleraceaberries, and leaflets ofOenocarpus bacabaandOenocarpus bataua, as well as similar antioxidant activity to green tea.E. oleracealeaflet extracts were more complex than root extracts, with fourteen compounds, including caffeoylquinic acids andC-glycosyl derivatives of apigenin and luteolin. In the roots, six caffeoylquinic and caffeoylshikimic acids were identified. Qualitative compositions ofE. oleracea,Oenocarpus bacabaandOenocarpus bataualeaflets were quite similar, whereas the quantitative compositions were quite different. These results provide new prospects for the valorization of roots and leaflets ofE. oleraceain the pharmaceutical, food or cosmetic industry, as they are currently by-products of the açaí industry.
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. christel.brunschwig@gmail.com.
authors.forename: Christel
authors.initials: C
authors.lastname: Brunschwig
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. louis-jerome.leba@univ-guyane.fr.
authors.forename: Louis-Jérôme
authors.initials: LJ
authors.lastname: Leba
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. mona.saout@gmail.com.
authors.forename: Mona
authors.initials: M
authors.lastname: Saout
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. karine.martial@univ-guyane.fr.
authors.forename: Karine
authors.initials: K
authors.lastname: Martial
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. didier.bereau@univ-guyane.fr.
authors.forename: Didier
authors.initials: D
authors.lastname: Bereau
authors.affiliation: UMR QUALITROP, Université de Guyane, Campus Universitaire de Troubiran, P.O. Box 792, 97337 Cayenne Cedex, French Guiana, France. jean-charles.robinson@univ-guyane.fr.
authors.forename: Jean-Charles
authors.initials: JC
authors.lastname: Robinson
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology; D047310:Apigenin / Q000032:analysis; D065748:Euterpe / Q000737:chemistry*; D047311:Luteolin / Q000032:analysis; D010084:Oxidation-Reduction; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D011801:Quinic Acid / Q000031:analogs & derivatives / Q000032:analysis
chemical_list: D000975:Antioxidants; D010936:Plant Extracts; C472707:caffeoylquinic acid; D011801:Quinic Acid; D047310:Apigenin; D047311:Luteolin
keywords: Euterpe oleracea; antioxidant activity; açaí