Spectrophotometric Determination of Caffeine in Selected Pakistani Beverages
Journal Title: Journal of Food Processing & Beverages - Year 2017, Vol 5, Issue 1
Abstract
Amount of caffeine in beverages gained much attention due to its various toxicological effects. However, limited data is available especially for store brands beverages. In order to assess the caffeine content, thirty different samples of soft drinks, energy drinks and tea samples were collected from Hyderabad, Pakistan. Quantification of caffeine was done by using in-house validated UV-Visible spectrophotometer. Accuracy and precision of the methods was checked by standard addition method. Tea sample (Tapal danedar) contains the highest amount of caffeine (111 μg/mL) with an average value of 89 μg/mL. Energy drinks (Mad Croc Cola) contain next higher amount of caffeine (90 μg/mL) with an average value of 47 μg/mL. The pH of all analyzed samples was found to be in the acidic range (2.88- 5.01) which is hazardous for adolescent teeth. This data will provide useful information for Pakistani regulatory authorities to set standards for additives in different types of beverages.
Authors and Affiliations
Zahid Shar
Keywords
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