Determination of Caffeine and some other Drugs in Cappuccino, Nescafe, Cacao, Coffee samples collected from some Libyan Markets using High Performance Liquid Chromatography (RP-HPLC)
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Published:2021-12-30
Issue:4
Volume:20
Page:149-155
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ISSN:2521-9200
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Container-title:Journal of Pure & Applied Sciences
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language:
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Short-container-title:JOPAS
Author:
Elmanfe Galal M.,Khalifa Hana O.,Khreit Osama,Abduljalil Omukalthum
Abstract
This study aims to determine the caffeine and detection of some other drugs (which has commonly spread and caused suicides in the recent years in El-Bieda city - Libya) in cappuccino, nescafe, cacao and coffee samples using Reversed Phase - High Performance Liquid Chromatography (RP-HPLC). In the presented study, seventeen samples were collected from some Libyan markets. A rapid, simple and reliable extraction method is developed and validated for the determination of caffeine and other drugs in the samples under study using dichloromethan, n-hexane and methanol as the extracting solvents. The method is validated over a wide linear range of 2 – 10 µg/ml with correlation coefficients being consistently greater than 0.999. The minimum caffeine level was observed in the Nesquik (Cacao), Nestle Italiana S.P.A sample (2.9129 µg/ml), while the Nestla (Nescafe), Asbania sample showed the highest caffeine content (598.5315 µg/ml). The RP-HPLC measurements indicate that the results of caffeine concentrations in samples under study are in the range of 2.9129 - 598.5315 µg/ml with an average of 221.8630 µg/ml. The measurements by HPLC methods indicate that the samples under study are free from other drugs: (olanzapine, diazepam and alprazolam). The caffeine content in all the samples analyzed in this study are within the allowable limits set by the US Food and Drugs Administration and documented values.
Publisher
Sebha University
Subject
General Materials Science
Cited by
1 articles.
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