Estimation of Caffeine, Niacin and Calorie Content in Tea Commonly Consumed by Dhaka City Residents

Mb Hosen, Nc Karmokar, Mar Bhuiyan, J Khanam, Mk Rahman


Tea is largest consuming drink in the world. Many health claims is attributed towards the tea
due to its distinguished phytochemical array. Role of tea is well established as a
neutraceutical and many studies elucidate its pharmacological worth. The objective of this
study was to calculate the calorie content by determining total lipid, crude fiber, total protein
and available carbohydrate contents and estimation of caffeine and niacin content in
Bangladeshi teas. The lipid, crude fiber, protein and available carbohydrate contents of the tea
samples were found to be in the range of 3.25-5.53, 10.15-15.41, 12.97-17.08 and 4.78-6.21
g/100g fresh weight respectively while calorie contents were found in the range of 83.54-
101.46 Kcal/100g fresh weight of tea. The total caffeine and niacin content in teas ranged
from 1.31 - 3.58 and 0.038 – 0.056 g/100g fresh weight respectively. Tea leaf contained the
highest amount of caffeine (3.58 g/100g) and niacin (0.056 g/100g). As tea has different
health effects it is essential to estimate the update nutrient contents of tea.


Caffeine, Camellia sinensis, Fermented, Niacin, Tea.

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