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Título

Influence of Two Fertilization Regimens on the Amounts of Organic Acids and Phenolic Compounds of Tronchuda Cabbage (Brassica oleracea L. Var. costata DC)

AutorSousa, Carla; Valentão, Patricia; Rangel, Joana; Lopes, Graciliana; Pereira, José Alberto; Ferreres, Federico ; Seabra, Rosa M.; Andrade, Paula B.
Palabras claveTronchuda cabbage
Brassica oleracea L. var. costata DC
Organic acids
Phenolic compounds
Organic and conventional production
Fecha de publicación15-oct-2005
EditorAmerican Chemical Society
CitaciónJournal of Agricultural and Food Chemistry 53(23): 9128-9132 (2005)
ResumenA phytochemical study was undertaken on tronchuda cabbage (Brassica oleracea L. var. costata DC) cultivated under conventional and organic practices and collected at different times. Six organic acids (aconitic, citric, ascorbic, malic, shikimic, and fumaric acids) were identified and quantified by HPLC-UV. Qualitative and quantitative differences were noted between internal and external leaves. Analysis of the phenolics of the internal leaves was achieved by HPLC-DAD, and the phenolic profile obtained was revealed to be distinct from that of the external leaves. By this means were identified and quantified 11 compounds: 3-p-coumaroylquinic acid, kaempferol 3-O-sophoroside-7-O-glucoside, kaempferol 3-O-(caffeoyl)sophoroside-7-O-glucoside, kaempferol 3-O-(sinapoyl)sophoroside-7-O-glucoside, kaempferol 3-O-(feruloyl)sophoroside-7-O-glucoside, kaempferol 3-O-sophoroside, two isomeric forms of 1,2-disinapoylgentiobiose, 1-sinapoyl-2-feruloylgentiobiose, 1,2,2‘-trisinapoylgentiobiose, and 1,2‘-disinapoyl-2-feruloylgentiobiose. In general, internal leaves exhibited more constant chemical profiles.
Descripción5 pages, 3 figures, 2 tables.
Versión del editorhttp://dx.doi.org/10.1021/jf051445f
URIhttp://hdl.handle.net/10261/17883
DOI10.1021/jf051445f
ISSN1520-5118 (Online)
0021-8561 (Print)
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