Table 1.

Chemical composition of a cup coffee (150 ml) made from 7.5 g of coffee powder [5].

Constitute of coffee	Amount (mg) in 1 cup of coffee
Caffeine	80-170
Protein	100
Water soluble polysaccharides	410-432
Saccharose	13.5
Monosaccharides (glucose and fructose)	7
Volatile acids (formic acid and acetic acid)	24
Nonvolatile acids (lactate, pyruvate, tartrate, and citrate)	27
Chlorogenic acids	250-292
Lipids	13.5
Trigonelline	27
Nicotinic acid	1.4
Volatile aromatic compounds	7
Minerals	240
Others	460