HPTLC determination of caffeine in stimulant herbal products and power drinks. J Pharm Biomed Anal 2004 Nov 15;36(3):617-20
Date
11/04/2004Pubmed ID
15522538DOI
10.1016/j.jpba.2004.06.029Scopus ID
2-s2.0-7444262420 (requires institutional sign-in at Scopus site) 53 CitationsAbstract
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 JSAuthor
Ehab A. Abourashed PhD Professor in the School of Pharmacy Administration department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
BeveragesCaffeine
Chromatography, High Pressure Liquid
Dietary Supplements
Plant Preparations