This experiment
did to determine the pH, levels of caffeine concentration in five soft drinks
and four energy drinks available in local market of Pakistan.
pH were measured
by pH meter. Quantitative estimation of caffeine concentration in drinks was
performed by a simple and fast
standard UV spectrophotometric method (Perkin Elmer
lambda 35 UV/Vis spectrometer) using carbon tetrachloride as the extracting
solvent at 270 nm wavelengths.
The minimum
caffeine level of soft drinks was observed in Brand-3(10.69 mg/serving), while
Brand-5 showed the highest caffeine content (42.17 mg/serving) showing a range
from 10.6 to 42.17 mg/serving.
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