Influence of two fertilization regimens on the amounts of organic acids and phenolic compounds of tronchuda cabbage (Brassica oleracea L. Var. costata DC)

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Sousa, C (Author) REIT; Valentao, P (Author) FFUP; Rangel, J (Author) Other; Lopes, G (Author) Other; Pereira, JA (Author) Other; Ferreres, F (Author) Other; Seabra, RA (Author) Other; Andrade, PB (Author) FFUP

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 53

Pages: 9128-9132

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 53 Citations

Scopus - 55 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-000-0FC

DOI: 10.1021/jf051445f

Abstract (EN): A 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5