New C-deoxyhexosyl flavones and antioxidant properties of Passiflora edulis leaf extract

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Federico Ferreres (Autor) Outra; Carla Sousa (Autor) REIT; Patocia Valentao (Autor) FFUP; Paula B Andrade (Autor) FFUP; Rosa M Seabra (Autor) Outra; Angel Gil Izquierdo (Autor) Outra

Revista

Título: Journal of Agricultural and Food Chemistry

Vol. 55 Nº 5

Páginas: 10187-10193

ISSN: 0021-8561

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 38 Citações

ISI Web of Science

Scopus - 54 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

CORDIS: Ciências da Saúde

Outras Informações

ID Authenticus: P-004-5SE

DOI: 10.1021/jf072119y

Resumo (PT): The 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. <br> <br> <a target="_blank" href="http://pubs.acs.org/doi/abs/10.1021/jf072119y"> Texto integral</a> <br> <br>

Abstract (EN): The 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7