Table 2: Average chemical composition of coffee beans (g/100 g dry weight) (modified from [7]) .

Component C. arabica G. robusta
Polysaccharides 49.8 54.4
Glucides 9.1 7.4
Proteins and aminoacids 10.3 11.3
Aliphatic acids 1.1 1.2
Chlorogenic acids 6.5 10.0
Lipids 16.2 10.0
Minerals (as ashes) 4.2 4.4