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Título

Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds: Phytochemical characterization and antioxidant potential

AutorFerreres, Federico ; Sousa, Carla; Valentão, Patricia; Seabra, Rosa M.; Pereira, José Alberto; Andrade, Paula B.
Palabras claveTronchuda cabbage seeds
Brassica oleracea L. var. costata DC
Phenolic compounds
Organic acids
Antioxidant capacity
Fecha de publicación2007
EditorElsevier
CitaciónFood Chemistry 101(2): 549-558 (2007)
ResumenTronchuda cabbage (Brassica oleracea L. var. costata DC) seeds were studied for their chemical composition and antioxidant capacity. Thirteen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-MS/MS-ESI and HPLC-DAD, respectively: two sinapoylgentiobiose isomers, three sinapoylglucose isomers, kaempferol-3-(sinapoyl)sophorotrioside-7-glucoside, sinapoylcholine, kaempferol-3,7-diglucoside-4′-(sinapoyl)glucoside, three disinapoylgentiobiose isomers, 1,2,2′-trisinapoylgentiobiose and 1,2-disinapoylglucose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified and quantified by HPLC-UV. The aqueous extract of tronchuda cabbage seeds 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. These results may be attributed to the high content of hydroxycinnamic derivatives and ascorbic acid.
Descripción10 pages, 6 figures, 3 tables.
Versión del editorhttp://dx.doi.org/10.1016/j.foodchem.2006.02.013
URIhttp://hdl.handle.net/10261/17652
DOI10.1016/j.foodchem.2006.02.013
ISSN0308-8146
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