Capillary Electrophoretic Determination of Synephrine and Naringenin in Trifoliate Orange

Capillary electrophoresis was applied to the determination of synephrine and naringenin in trifoliate orange.Effective separation of synephrine and naringenin was achieved in 30 mmol·L-1 sodium tetraborate solution of pH 10.0.Contents of synephrine and naringenin found in a typical sample of trifoliate orange were 0.724 2 mg·g-1 with RSD′s (n=5) 5.9% and 0.904 7 mg·g-1 with RSD′s (n=5) 3.8% respectively.Average values of recovery found by this method were 89.1% for synephrine and 99.6% for naringenin.