title: Oenocarpus bacaba and Oenocarpus bataua Leaflets and Roots: A New Source of Antioxidant Compounds.
abstract: Native palm trees fruit from the Amazonian rainforest, Oenocarpus bacaba and Oenocarpus bataua, are very often used in the diet of local communities, but the biological activities of their roots and leaflets remain poorly known. Total phenolic content (TPC) and antioxidant activity of root and leaflet extracts from Oenocarpus bacaba and Oenocarpus bataua were assessed by using different chemical assays, the oxygèn radical absorbance capacity (ORAC), the 2,2-diphenyl-l-picrylhydrazyl (DPPH) free radical-scavenging capacity and the ferric-reducing ability of plasma (FRAP). Cellular antioxidant activity and cytotoxicity were also measured in Normal Human Dermal Fibroblasts. The polyphenolic composition of Oenocarpus extracts was investigated by LC-MS(n). Oenocarpus leaflet extracts were more antioxidant than root extracts, being at least as potent as Euterpe oleracea berries known as superfruit. Oenocarpus root extracts were characterized by hydroxycinnamic acids (caffeoylquinic and caffeoylshikimic acids), while leaflet extracts contained mainly caffeoylquinic acids and C-glycosyl flavones. These results suggest that leaflets of both Oenocarpus species could be valorized as a new non-cytotoxic source of antioxidants from Amazonia, containing hydroxycinnamic acids and flavonoids, in the pharmaceutical, cosmetic or agri-food industry.
authors.affiliation: Universit&#233; de Guyane, UMR QUALITROP, 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: Universit&#233; de Guyane, UMR QUALITROP, 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: Universit&#233; de Guyane, UMR QUALITROP, 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: Universit&#233; de Guyane, UMR QUALITROP, 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: Universit&#233; de Guyane, UMR QUALITROP, 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: Universit&#233; de Guyane, UMR QUALITROP, 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* / Q000633:toxicity; D028023:Arecaceae / Q000737:chemistry* / Q000378:metabolism; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D010636:Phenols / Q000737:chemistry / Q000633:toxicity; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D025341:Principal Component Analysis; D053719:Tandem Mass Spectrometry
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts
keywords: C-glycosyl flavones; LC-MS/MS; Oenocarpus bacaba; Oenocarpus bataua; antioxidant activity; cellular assay; hydroxycinnamic acids; leaf; roots