2024-03-29T11:27:18Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/178452019-02-14T10:15:13Zcom_10261_72com_10261_6col_10261_325
00925njm 22002777a 4500
dc
Ferreres, Federico
author
Sousa, Carla
author
Pereira, José Alberto
author
Vrchovská, Vendula
author
Valentão, Patricia
author
Seabra, Rosa M.
author
Andrade, Paula B.
author
2005-10-13
A phytochemical study was undertaken on the internal leaves of tronchuda cabbage (Brassica oleracea L. var. costata DC). Seventeen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-ESI-MS n and HPLC/DAD, respectively: quercetin 3-O-sophoroside-7-O-glucoside, 3-p-coumaroylquinic acid, kaempferol 3-O-sophoroside-7-O-glucoside, kaempferol 3-O-(caffeoyl)-sophoroside-7-O-glucoside, sinapoyl gluc-oside acid, kaempferol 3-O-(sinapoyl)-sophoroside-7-O-glucoside, kaempferol 3-O-(feruloyl)-sophoroside-7-O-glucoside, kaempferol 3-O-(p-coumaroyl)-sophoroside-7-O-glucoside, 4-p-coumaroylquinic acid, sinapic acid, kaempferol 3-O-sophoroside, 3 isomeric forms of 1,2-disinapoylgentiobiose, 1-sinapoyl-2-feruloylgentiobiose, 1,2,2-trisinapoylgentiobiose and 1,2′-disinapoyl-2-ferul-oylgentiobiose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified and quantified. The hot water extract of tronchuda cabbage internal leaves 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.
European Food Research and Technology 222(1-2): 88-98 (2006)
1438-2377
http://hdl.handle.net/10261/17845
10.1007/s00217-005-0104-0
1438-2385
http://dx.doi.org/10.13039/501100001871
http://dx.doi.org/10.13039/501100000780
Tronchuda cabbage internal leaves
Brassica oleracea L. var. costata DC
Phenolics
Organic acids
Antioxidant capacity
Chemical composition and antioxidant activity of tronchuda cabbage internal leaves