Vol. 11, Issue 8 (2022)

Author(s):
Abdul Rehman, Y Srinivas, Ashoksuraj BS and S Shanmugasundaram

Abstract:
Tea (Camellia sinensis L.) is amongst the most popular beverages around the globe. Tea contains polyphenols and flavonoids, which have huge health significance. Hence, polyphenols and flavonoids can be considered as good indicator for tea quality. In the present investigation four different tea varieties i.e., Nilgiri, Darjeeling, Assam and Munnar were analyzed for their moisture content, water activity, total phenol content and total flavonoid content using UV-visible spectrophotometer. The total amounts of phenol content and total flavonoids were determined by Folin-Ciocalteu and Aluminium chloride method respectively. The total phenol was obtained as in the range of 20.76 ± 0.010 to 25.97 ± 0.027 mg gallic acid equivalent (GAE)/g of dry weight and flavonoids were expressed between 45±0.012 to 53.84±0.017 mg/g of catechin equivalents (mg/g of Catechin of extracted compound) for the sample taken. Nilgiri and Assam tea infusion were determined to have the highest phenol and total flavonoid contents i.e., 25.97 ppm and 53.84 ppm respectively.