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Distribution of C- and O-glycosyl flavonoids, (3-hydroxy-3-methylglutaryl)glycosyl flavanones and furocoumarins in Citrus aurantium L. juice
- Barreca, Davide, Bellocco, Ersilia, Caristi, Corrado, Leuzzi, Ugo, Gattuso, Giuseppe
- Food chemistry 2011 v.124 no.2 pp. 576-582
- Citrus aurantium, antioxidant activity, ethers, flavanones, glycosides, orange juice, psoralens
- The qualitative and quantitative flavonoid and furocoumarin composition of crude sour orange (Citrus aurantium L.) juice was determined via reverse-phase LC–DAD–ESI–MS–MS analysis. In a single course, a comprehensive chromatographic profile of 14 compounds (furocoumarins, C- and O-glycosyl flavonoids) was obtained. Seven flavonoids and a furocoumarin were identified for the first time in sour orange juice: three C-glucosides (lucenin-2, vicenin-2 and lucenin-2, 4′-methyl ether), two O-glycosides (rhoifolin 4′-glucoside and narirutin 4′-glucoside), two 3-hydroxy-3-methylglutaryl flavanone glycosides (melitidin and brutieridin) and a furocoumarin (epoxybergamottin). Furthermore, the antioxidant activity of sour orange juice was assessed by means of ABTS ⁺ and DPPH radical scavenging assays.