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Advisor(s)
Abstract(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.
Description
Keywords
Pieris brassicae L. larvae Tronchuda cabbage Brassica oleracea L. var. costata DC Flavonoids
Citation
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
Publisher
Elsevier