Standardization of Celery Seed Extract and capsules
The standard NBP was applied for the standardization of the extract and final capsule powder. The HPLC analysis revealed that the amount of NBP in aqueous-ethanolic (20/80, v/v) extract was 15.68 mg/g. According to the collected data, the NBP amount in each capsule was 5.23 ± 0.06 mg. Figure 1 represents chromatograms of standard methanolic solution of NBP (10 µg/mL) and celery seed capsule powder (1000 µg/mL).