DOI: 10.21276/sajp.2018.7.1.3

Pages: 11-19

Six marketed brands of Ispahani tea grown in Bangladesh viz; Best leaf, Best quality (BOP), Blender's choice, Best quality (PD), Zareen and Tea Bags were studied before expiry dates to screen out their active components that are responsible for qualitative status (viz; Caffeine, Total Polyphenol (TP), Theaflavin (TF), Thearubigin (TR), Highly Polymerized Substances (HPS), Total Liquor Colour (TLC), Briskness Index (BI), Colour Index (CI) and nutrient elements (N, P, K, Ca and Na). All the studied parameters were found to have been varied with brands. The values of caffeine and TP were found to be varied from 2.83% (Blender's choice) to 2.35% (Best leaf) and 17.70% (Best leaf) to 14.55% (Blender's choice) respectively. Similarly, the estimated values of TF, TR, HPS, TLC and CI were detected to be maximum in Blender's choice but maximum BI was in Best leaf tea whereas minimum TF, TR, TLC, BI and CI were detected in Zareen tea but minimum HPS was in tea bags. In contrast, the total amount of studied nutrient contents (N, P, K, Ca and Na) was determined to be the highest in Best quality-BOP (10.08%) and the lowest in Zareen tea