Chemical composition of Green Tea
SL no. Elements Percentage
1. Proteins (15-20% dry weight)
2. Amino acids(suchas Theanineor 5-N-Ethylglutamine,
Glutamic acid, Trypto-phan, Glycine, Serine, Aspartic
acid, Tyrosine, Valine, Leucine, Threonine, Arginine,
and Lysine)
(1-4% dry weight)
3. Carbohydratessuch as Cellulose, Pectins, Glucose,
Fructose, and Sucrose
(5-7% dry weight)
4. Minerals and trace elements(such as Calcium,
Magnesium, Chromium, Manganese, Iron, Copper,
Zinc, Molybdenum, Selenium, Sodium, Phosphorus,
Cobalt, Strontium, Nickel, Potassium, Fluorine, and
Aluminum)
5% dry weight)
5. Lipids(linoleic and alinolenicacids)
6. Sterols(stigmas-terol)
Vitamins (B, C, E),
Xanthicbases (Caffeine, theophylline)
Pigments (chlorophyll, Carotenoids)
Volatile compounds(Aldehydes, Alcohols, Esters,
Lactones, hydrocarbons)
Most of the green tea polyphenols(GTPs) are Flavonols,commonly known as ‘Catechins’.