title: HPLC determination of isoflavone levels in osage orange from the Midwest and southern United States.
abstract: The fruit of the Maclura pomifera tree is a sustainable source for the pharmacologically interesting isoflavones, osajin and pomiferin. A reversed-phase HPLC method was developed to identify osage orange samples with high isoflavone content and to determine the optimum conditions for sample preparation. Analytical run time was 8 min at a flow rate of 1 mL/min using a gradient of acetonitrile in H2O (0.1% formic acid) and UV peak detection at 274 nm. The method was validated for specificity, accuracy, precision, and limits of detection and quantitation (LOD/LOQ). The method was applied to determine the levels of osajin and pomiferin in extracts prepared from different samples of osage orange growing in the Midwest and southern United States. Results demonstrated the effect of different variables, such as sample preparation, geographical location, and growth stage, on the levels of osajin and pomiferin in analyzed samples.
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, Chicago State University, Chicago, Illinois, United States.
authors.forename: Ketur
authors.initials: K
authors.lastname: Darji
authors.forename: Cristina
authors.initials: C
authors.lastname: Miglis
authors.forename: Ashley
authors.initials: A
authors.lastname: Wardlow
authors.forename: Ehab A
authors.initials: EA
authors.lastname: Abourashed
mesh_terms: D001578:Benzopyrans / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D007529:Isoflavones / Q000032:analysis*; D031624:Maclura / Q000737:chemistry*; D015146:Midwestern United States; D015203:Reproducibility of Results; D014481:United States
chemical_list: D001578:Benzopyrans; D007529:Isoflavones; C474837:pomiferin; C485800:osajin