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A sensitive, simple, rapid, and efficient high-performance thin-layer chromatographic (HPTLC) method has been developed and validated for the analysis of berberine in marketed Ayurvedic formulations containing Berberis aristata DC for regulatory purposes. Chromatography of methanolic
extracts of these formulations was performed on silica gel 60 F254 aluminum-backed TLC plates of 0.2 mm layer thickness. The plate was developed up to 66 mm with the ternary-mobile phase butanolacetic acidwater (8 + 1 + 1, v/v/v) at 33 5C with 5 min of tank saturation. The marker,
berberine, was quantified at its maximum absorbance of 350 nm. The limit of detection and limit of quantitation values were found to be 5 and 10 ng/spot. The linear regression analysis data for the calibration plot showed a good linear relationship with correlation coefficient 0.9994 in the
concentration range of 10 to 50 ng/spot for berberine with respect to peak area. The instrumental precision was found to be 0.49 coefficient of variation (CV), and repeatability of the method was 0.73 CV. Recovery values from 98.27 to 99.11 indicate excellent accuracy of the method. The developed
HPTLC method is very accurate, precise, and cost-effective, and it has been successfully applied to the assay of marketed formulations containing B. aristata for determination of berberine.
Document Type: Research Article
Utkal University, Pharmacognosy and Phytochemistry Division, University Department of Pharmaceutical Sciences, Vani Vihar, Bhubaneswar-751004, Orissa, India. 2:
Centre for Rural Development and Technology IIT, Delhi, India.
Publication date: September 1, 2008
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The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.