Comparison of caffeine concentration in premix instant coffee / Moneyzawati Mahmood

This project was done to determine the caffeine concentration in the premix coffee The HPLC method was used to determine the caffeine concentration of the premix instant coffee. The main objective of this project was to determine the caffeine concentration of the premix instant coffee of 5 in 1, 6 in 1 and 7 in 1 instant coffee from the market. The highest caffeine concentration in 5 in 1 instant coffee was Gold Choice premix coffee (142.36 ppm) and the lowest caffeine concentration was Ali Cafe premix coffee sample (107.68 ppm). For 6 in 1 premix coffee, the highest concentration was in Agogo premix coffee that contains 171.81 ppm and the lowest caffeine concentration was Vikof premix coffee that contains 116.54 ppm. Caffeine concentration was the highest in Radix 7 in 1 premix coffee that contains 130.30 ppm and the lowest was Sawda 7 in 1 premix coffee that have 86.13 ppm of caffeine. From each types of premix coffee, the 6 in 1 premix instant coffee formulation contains the highest caffeine concentration while the lowest was the 7 in 1 premix.