✦ LIBER ✦

Determination of berberine in Rhizoma coptidis and its preparations by non-aqueous capillary electrophoresis

✍ Scribed by Song-gang Ji; Yi-feng Chai; Guo-qing Zhang; Yu-tian Wu; Dong-sheng Liang; Zi-ming Xu

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 46 KB
Volume: 13
Category: Article
ISSN: 0269-3879
DOI: 10.1002/(sici)1099-0801(199911)13:7<439::aid-bmc907>3.0.co;2-u

No coin nor oath required. For personal study only.

✦ Synopsis

A non-aqueous capillary electrophoretic method was established for the determination of berberine in Rhizoma coptidis and its preparations. The effects of organic solvent and the concentrations of sodium acetate were studied, which showed that berberine in extracts of traditional Chinese medicine can be separated successfully in a buffer solution of 75 mmol/L of sodium acetate in methanol containing 1 mol/L of acetic acid. The simple and rapid method was linear in the range 25-200 mg/mL of berberine and had a good reproducibility, with the relative standard deviation below 2%. Non-aqueous capillary electrophoresis is a satisfactory system for the analysis of alkaloids in traditional Chinese medicine.

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