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Publication Date
Wed Mar 29 2017
Journal Name
Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)
Volume
19
Issue Number
2
DOI
10.31351/vol19iss2pp48-53
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bijps-506
Gravimetric Estimation of Caffeine in Different Commercial Kinds of Tea Found in the Iraqi Market
Maha
Dhuha
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          Caffeine (1,3,7-trimethylxanthine), which is the most widely consumed stimulant in the world, had been isolated and estimated gravimetrically in fifteen  different commercial kinds of tea found in the Iraqi market.The kinds of tea were chosen according to their differences in the degree of fermentation and the method of processing i.e. black , gray and  green . The isolated caffeine was identified by melting point, sublimation, TLC, chemical tests, UV , IR , HPLC and CHNO analysis.                                                                                                              

Key words: Caffeine, Purine, tea.  

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