Assam fresh leaves and green tea containing 21.485 and 20.710% of total polyphenols, respectively,
were extracted using water with various tea:water ratio and pH to obtain tea extract enriched in phenolic
compounds
Ratio of tea to water and pH affected the amount of total polyphenol, tannins, caffeine and total
amino acids in both extract. The optimum extraction condition, were 1:20 of tea:water ratio at pH 4 and 5 in fresh
leaves and green tea extracts, respectively