Phenolic Compounds in External Leaves of Tronchuda Cabbage (Brassica oleracea L. var. costata DC)

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• 作者：Federico Ferreres ; Patrí ; cia Valentã ; o ; Rafael Llorach ; Cristina Pinheiro ; Lí ; gia Cardoso ; José ; A. Pereira ; Carla Sousa ; Rosa M. Seabra ; and Paula B. Andrade
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2005
• 出版时间：April 20, 2005
• 年：2005
• 卷：53
• 期：8
• 页码：2901 - 2907
• 全文大小：108K
• 年卷期：v.53,no.8(April 20, 2005)
• ISSN：1520-5118

文摘

Glycosylated kaempferol derivatives from the external leaves of tronchuda cabbage (Brassica oleraceaL. var. costata DC) characterized by reversed-phase HPLC-DAD-MS/MS-ESI were kaempferol 3-O-sophorotrioside-7-O-glucoside, kaempferol 3-O- (methoxycaffeoyl/caffeoyl)sophoroside-7-O-glucoside,kaempferol 3-O-sophoroside-7-O-glucoside, kaempferol 3-O-sophorotrioside-7-O-sophoroside, kaempferol 3-O-sophoroside-7-O-sophoroside, kaempferol 3-O-tetraglucoside-7-O-sophoroside, kaempferol3-O-(sinapoyl/caffeoyl)sophoroside-7-O-glucoside, kaempferol 3-O-(feruloyl/caffeoyl)sophoroside-7-O-glucoside, kaempferol 3-O-sophorotrioside, kaempferol 3-O-(sinapoyl)sophoroside, kaempferol 3-O-(feruloyl)sophorotrioside, kaempferol 3-O-(feruloyl)sophoroside, kaempferol 3-O-sophoroside, andkaempferol 3-O-glucoside. These acylated derivatives are reported for the first time in nature, withthe exception of kaempferol 3-O-(sinapoyl)sophoroside. Quantification of the identified compoundswas achieved by HPLC-DAD and carried out in samples cultivated under conventional or organicpractices and collected at different times. In general, samples from organic production exhibited highertotal phenolics content than those from conventional practices collected in the same period.Keywords: Tronchuda cabbage; Brassica oleracea L. var. costata DC; kaempferol derivatives; HPLC-DAD-MS/MS-ESI; HPLC-DAD