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Advisor(s)
Abstract(s)
Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds were studied for their chemical composition and antioxidant capacity.
Thirteen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-MS/MS-ESI and HPLC-DAD,
respectively: two sinapoylgentiobiose isomers, three sinapoylglucose isomers, kaempferol-3-(sinapoyl)sophorotrioside-7-glucoside, sinapoylcholine,
kaempferol-3,7-diglucoside-40-(sinapoyl)glucoside, three disinapoylgentiobiose isomers, 1,2,20-trisinapoylgentiobiose and
1,2-disinapoylglucose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified
and quantified by HPLC-UV. The aqueous extract of tronchuda cabbage seeds was investigated for its capacity to act as a scavenger
of DPPH- radical and reactive oxygen species (superoxide radical, hydroxyl radical and hypochlorous acid), exhibiting antioxidant
capacity in a concentration-dependent manner against all radicals. These results may be attributed to the high content of hydroxycinnamic
derivatives and ascorbic acid.
Description
Keywords
Tronchuda cabbage seeds Brassica oleracea L. var. costata DC Phenolic compounds Organic acids Antioxidant capacity
Citation
Ferreres, F.; Sousa, C.; Valentão, P.; Seabra, R.M.; Pereira, J.A.; Andrade, P.B. (2007). Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds: phytochemical characterization and antioxidant potential. Food Chemistry. ISSN 0308-8146. 101:2, p. 549-558
Publisher
Elsevier