title: Simultaneous analysis of adrenergic amines and flavonoids in citrus peel jams and fruit juices by liquid chromatography: part 2.
abstract: Citrus species are rich sources for various bioactive compounds such as flavonoids, adrenergic amines, limonoids, and coumarins. Six adrenergic amines and 20 flavonoids in the jams and juices of Citrus species were analyzed by high-performance liquid chromatography with a C18 reversed-phase column using gradient mobile phase of sodium acetate buffer (pH 5.5) and acetonitrile at a flow rate of 1.0 mL/min with detection at 254, 280, and 330 nm. Synephrine was present in levels from 3.65 to 60.66 mg/L in 48 Citrus juices and 0.018-1.02 mg per serving in 32 Citrus jams. The content of these amines and flavonoids varied to a large extent depending on the type of the Citrus species used. The method has been successfully applied to the determination of adrenergic amines and flavonoids in several samples of Citrus fruit juices and jams.
authors.affiliation: National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, The University of Mississippi, MS 38677, USA. bavula@olemiss.edu
authors.forename: Bharathi
authors.initials: B
authors.lastname: Avula
authors.forename: Sampath K
authors.initials: SK
authors.lastname: Upparapalli
authors.forename: Ikhlas A
authors.initials: IA
authors.lastname: Khan
mesh_terms: D000588:Amines / Q000032:analysis / Q000737:chemistry; D001628:Beverages; D002021:Buffers; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002851:Chromatography, High Pressure Liquid; D002853:Chromatography, Liquid / Q000379:methods*; D002957:Citrus; D005419:Flavonoids / Q000032:analysis*; D005502:Food; D005504:Food Analysis / Q000379:methods*; D008956:Models, Chemical; D019346:Sodium Acetate / Q000737:chemistry; D013578:Synephrine / Q000032:analysis / Q000737:chemistry; D013997:Time Factors
chemical_list: D000588:Amines; D002021:Buffers; D005419:Flavonoids; D019346:Sodium Acetate; D013578:Synephrine