Comparative UV-Spectroscopic Analysis of Different Local Brands of Black Tea Available in Maharashtra Region (India) for the Presence of Caffeine

Caffeine is a well-known stimulant which present in tea leaves. Caffeine has drawn more attention due to its physiological effects beyond that of its stimulatory effect. Consumers are interested in knowing the exact amounts of caffeine existing in different brands of tea powder available in the market. However, limited data exist, especially for store brands. The objective of the present research work was to estimate and compare caffeine content of different local brands of black tea available in Maharashtra region (India) using validated UV-Spectroscopic method. The caffeine content of various brands of tea powder used in Maharashtra region (India) was found in the range of 2.51 % to 3.19 %.