HPTLC determination of caffeine in stimulant herbal products and power drinks

被引：43

作者：

Abourashed, EA ^{[1
]}

Mossa, JS ^{[1
]}

机构：

[1] King Saud Univ, Coll Pharm, Dept Pharmacognosy, Riyadh 11451, Saudi Arabia

来源：

JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS | 2004年 / 36卷 / 03期

关键词：

HPTLC; caffeine; dietary supplements; herbal products; energy drinks;

D O I：

10.1016/j.jpba.2004.06.029

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 275 nm. 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. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：617 / 620

页数：4

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