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Título

New C-Deoxyhexosyl Flavones and Antioxidant Properties of Passiflora edulis Leaf Extract

AutorFerreres, Federico ; Sousa, Carla; Valentão, Patricia; Andrade, Paula B.; Seabra, Rosa M.; Gil-Izquierdo, Ángel
Palabras clavePassiflora edulis
C-deoxyhexosyl flavones
Mass spectrometry
Flavonoids
Antioxidant
Fecha de publicación15-nov-2007
EditorAmerican Chemical Society
CitaciónJournal of Agricultural and Food Chemistry 55(25): 10187-10193 (2007)
ResumenThe flavonoids present in passion fruit (Passiflora edulis) leaves were identified by a high-performance liquid chromatography–diode array detection–tandem mass spectrometry (HPLC–DAD–MS/MS) method. Sixteen apigenin or luteolin derivatives were characterized, which included four mono-C-glycosyl, eight O-glycosyl-C-glycosyl, and four O-glycosyl derivatives. With the exceptions of C-hexosyl luteolin and C-hexosyl apigenin, all the compounds exhibited a deoxyhexose moiety. Moreover, the uncommon C-deoxyhexosyl derivatives of luteolin and apigenin have been identified for first time in P. edulis by HPLC–DAD–MS/MS. The antioxidative capacity of passion fruit leaves was checked against DPPH radical and several reactive oxygen species (superoxide radical, hydroxyl radical, and hypochlorous acid), revealing it to be concentration-dependent, although a pro-oxidant effect was noticed for hydroxyl radical.
Descripción7 pages, 8 figures, 1 table.
Versión del editorhttp://dx.doi.org/10.1021/jf072119y
URIhttp://hdl.handle.net/10261/17679
DOI10.1021/jf072119y
ISSN1520-5118 (Online)
0021-8561 (Print)
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