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Título: Tronchuda cabbage flavonoids uptake by Pieris brassicae
Autor: Ferreres, F.
Sousa, C.
Valentão, P.
Pereira, J.A.
Seabra, R.M.
Andrade, P.B.
Palavras-chave: Pieris brassicae L. larvae
Tronchuda cabbage
Brassica oleracea L. var. costata DC
Issue Date: 2007
Editora: Elsevier
Citação: Phytochemistry. ISSN 0031-9422. 68:3 (2007) p. 361-367.
Resumo: The flavonoid pattern of larvae of cabbage white butterfly (Pieris brassicae L.; Lepidoptera: Pieridae) reared on the leaves of tronchuda cabbage was analysed by HPLC-DAD-MS/MS-ESI. Twenty flavonoids were identified or characterised, namely 16 kaempferol and four quercetin derivatives. Kaempferol 3-O-sophoroside, a minor component of tronchuda cabbage, was found to be the main component in P. brassicae (15.8%). Apart from this, only two other flavonoids present in significant amounts in tronchuda cabbage (kaempferol 3-O-sophoroside-7-O-glucoside and kaempferol 3-O-sophoroside-7-O-sophoroside) were found in the larvae. The larvae have high amounts of quercetin derivatives (18.5%), which were present only in trace amounts in tronchuda cabbage extracts, suggesting that P. brassicae is able to selectively sequester these flavonoids. The occurrence of a high content of flavonoids not detectable in tronchuda cabbage extracts indicates that P. brassicae larvae are able to metabolize dietary flavonoids.
ISSN: 0031-9422
Appears in Collections:PTV - Artigos em Revistas Indexados ao ISI
CIMO - Artigos em Revistas Indexados ao ISI

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