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Título

Chemical composition and antioxidant activity of tronchuda cabbage internal leaves

AutorFerreres, Federico ; Sousa, Carla; Pereira, José Alberto; Vrchovská, Vendula; Valentão, Patricia; Seabra, Rosa M.; Andrade, Paula B.
Palabras claveTronchuda cabbage internal leaves
Brassica oleracea L. var. costata DC
Phenolics
Organic acids
Antioxidant capacity
Fecha de publicación13-oct-2005
EditorSpringer
CitaciónEuropean Food Research and Technology 222(1-2): 88-98 (2006)
ResumenA phytochemical study was undertaken on the internal leaves of tronchuda cabbage (Brassica oleracea L. var. costata DC). Seventeen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-ESI-MS n and HPLC/DAD, respectively: quercetin 3-O-sophoroside-7-O-glucoside, 3-p-coumaroylquinic acid, kaempferol 3-O-sophoroside-7-O-glucoside, kaempferol 3-O-(caffeoyl)-sophoroside-7-O-glucoside, sinapoyl gluc-oside acid, kaempferol 3-O-(sinapoyl)-sophoroside-7-O-glucoside, kaempferol 3-O-(feruloyl)-sophoroside-7-O-glucoside, kaempferol 3-O-(p-coumaroyl)-sophoroside-7-O-glucoside, 4-p-coumaroylquinic acid, sinapic acid, kaempferol 3-O-sophoroside, 3 isomeric forms of 1,2-disinapoylgentiobiose, 1-sinapoyl-2-feruloylgentiobiose, 1,2,2-trisinapoylgentiobiose and 1,2′-disinapoyl-2-ferul-oylgentiobiose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified and quantified. The hot water extract of tronchuda cabbage internal leaves was investigated for its capacity to act as a scavenger of DPPH• radical and reactive oxygen species (superoxide radical, hydroxyl radical and hypochlorous acid), exhibiting antioxidant capacity in a concentration dependent manner against all radicals.
Descripción11 pages, 9 figures, 6 tables.-- Printed version published Jan 2006.
Versión del editorhttp://dx.doi.org/10.1007/s00217-005-0104-0
URIhttp://hdl.handle.net/10261/17845
DOI10.1007/s00217-005-0104-0
ISSN1438-2377 (Print)
1438-2385 (Online)
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