Abstract

SIMULTANEOUS ESTIMATION OF CAFFEINE AND BENZOIC ACID IN SOFT DRINKS BY USING UV-VISIBLE SPECTROSCOPY

Vasubabu Padarthi*, Dr. K. N. Vidyadhar, Pudi Durgasyam, Yasarapu Manoj, Meka
Jhansy Saranya and Mokara Laxmi Priya

Abstract

Five brands of soft drinks were analyzed for benzoic acid and caffeine content by using simultaneous estimation method. The soft drink includes Thums up, Limca, Coca cola, Sprite and Mountain dew. The result shows that the pH of soft drinks ranges from 1.8 to 2.8. The amount of benzoic acid and caffeine is determined by using simultaneous estimation method. In this process, it was found that amount of benzoic acid was low in Mountain dew. The caffeine content in soft drinks was only found in Thums up, Coca cola and Mountain dew and remaining other samples the presence of caffeine absorbance under UV spectrophotometry are not detected.

Keywords: Soft drinks, Benzoic acid, Caffeine, Simultaneous equation, UV Spectrophotometry.