Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds:: Phytochemical characterization and antioxidant potential

被引:57
作者
Ferreres, Federico
Sousa, Carla
Valentao, Patricia
Seabra, Rosa M.
Pereira, Jose A.
Andrade, Paula B.
机构
[1] CSIC, Res Grp Qual Safety & Bioact Plant Foods, Dept Food Sci & Technol, CEBAS, Espinardo 30100, Murcia, Spain
[2] Univ Porto, REQUIMTE, Serv Farmacognosia, Fac Farm, P-4050047 Oporto, Portugal
[3] CIMO, ESAB, P-5301855 Braganca, Portugal
关键词
tronchuda cabbage seeds; Brassica oleracea L. var. costata DC; phenolic compounds; organic acids; antioxidant capacity;
D O I
10.1016/j.foodchem.2006.02.013
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
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-4'-(sinapoyl)glucoside, three disinapoylgentiobiose isomers, 1,2,2'-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. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:549 / 558
页数:10
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