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Colorimetric Assay of Caffeine in Crude Drugs and in Pharmaceutical Preparations

 

作者: MohamedS. Karawya,   AlyMohmed Diab,   NaglaZ. Swelem,  

 

期刊: Analytical Letters  （Taylor Available online 1984）
卷期: Volume 17, issue 1  

页码: 77-88

 

ISSN:0003-2719

 

年代: 1984

 

DOI:10.1080/00032718408065266

 

出版商: Taylor & Francis Group

 

关键词: Caffeine;Theobromine;Theophylline;Mur-exide color reaction;Coffee;Tea;Cola-type drinks;Opiate;Street samples;Determination

 

数据来源: Taylor

 

摘要:

The well known Hurexide reaction for purine bases was modified and optimized for the quantification of caffeine in crude drugs, refreshing drinks and pharmaceuticals. The method was also applied for the detection and assay of caffeine in mixtures of illegal opiate samples. It was also applied to assay theobromine and theophylline alongside with caffeine in their natural and synthretic mixtures after a simple separating procedure depending on their different basicities.

 

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