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HPTLC determination of caffeine in stimulant herbal products and power drinks. J Pharm Biomed Anal 2004 Nov 15;36(3):617-20

Date

11/04/2004

Pubmed ID

15522538

DOI

10.1016/j.jpba.2004.06.029

Scopus ID

2-s2.0-7444262420 (requires institutional sign-in at Scopus site)   53 Citations

Abstract

The caffeine content of selected herbal products and energy drinks available in the Saudi market was determined by HPTLC-UV densitometric analysis. Pre-coated HPTLC silica gel plates (20cm x 10cm) were used for the analysis. The solvent system consisted of ethyl acetate-methanol (85:15, v/v), and caffeine was detected at 275nm. The developed method was validated for specificity, repeatability (C.V. < 5%), recovery (98.90 +/- 3.46), and accuracy (99.84 +/- 2.87). The levels of caffeine were 4.76-13.29% (w/w) and 0.011-0.032% (w/v), for the herbal products and the energy drinks, respectively.

Author List

Abourashed EA, Mossa JS

Author

Ehab A. Abourashed PhD Professor in the School of Pharmacy Administration department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Beverages
Caffeine
Chromatography, High Pressure Liquid
Dietary Supplements
Plant Preparations