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Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Pieris brassicae L. larvae Tronchuda cabbage Brassica oleracea L. var. costata DC Flavonoids
Contexto Educativo
Citação
Ferreres, F.; Sousa, C.; Valentão, P.; Pereira, J.A.; Seabra, R.M.; Andrade, P.B. (2007). Tronchuda cabbage flavonoids uptake by Pieris brassicae. Phytochemistry. ISSN 0031-9422. 68:3, p. 361-367
Editora
Elsevier