[Determination of caffeine content in some beverages]
Arab Journal of Pharmaceutical Sciences. 2009; 3 (10): 57-62
in Arabic
| IMEMR
| ID: emr-103467
ABSTRACT
Caffeine [1,3,5-trimethylxanthine], a mild addicting drug was isolated and characterized from soft drinks, tea, coffee, mate and cacao commercially available in Syria. Isolation was done by liquid-liquid extraction using chloroform as an extracting solvent. Quantification of the caffeine isolated was done by High performance liquid chromatography with UV/Vis detector [275 nm] and UV/Vis spectrophotometer at the same lamda[max]. In HPLC, acetate buffer [pH=4.5] and methanol [11] was used as mobile phase. The obtained results were compared with caffeine content in various beverages as mentioned in US Food and Drug Administration tables
Search on Google
Index:
IMEMR (Eastern Mediterranean)
Main subject:
Spectrophotometry, Ultraviolet
/
Beverages
/
Buffers
/
Chloroform
/
Chromatography, High Pressure Liquid
/
Methanol
/
Acetates
Language:
Arabic
Journal:
Arab J. Pharm. Sci.
Year:
2009
Similar
MEDLINE
...
LILACS
LIS