Flavonoids detection by HPLC-DAD-MS-MS in lemon juices from Sicilian cultivars

Journal of Agricultural and Food Chemistry
Corrado CaristiUgo Leuzzi

Abstract

High-performance liquid chromatography-diode array detector (HPLC-DAD) coupled with electronspray mass spectrometry (ESI-MS) was used to detect the flavonoid profile in lemon juices obtained from the main Sicilian cultivars (Femminello comune, Monachello, and Interdonato). Significant amounts of an unusual constituent were found in the lemon juice of the above-mentioned cultivars together with eriocitrin, hesperidin, and diosmin. Following purification by preparative HPLC, the structure was assigned as 6,8-di-C-glucopyranosyldiosmetin by means of DAD-UV, ESI-MS-MS, and (1)H NMR analysis. Three other minor components were also detected. One of these presented a flavone nature, and spectral data and literature references both suggested a 6,8-di-C-glucopyranosylapigenin structure. The different contents of eriocitrin, hesperidin, diosmin, and above minor components in the cultivars allow juices to be readily differentiated.

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Citations

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Oct 8, 2011·Journal of Agricultural and Food Chemistry·Suri Roowi, Alan Crozier
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