Molecular Breeding of Advanced Microorganisms for Biofuel Production

Table 1

Comparison of butanol with ethanol and gasoline.

Fuel	Caloric value (MJ/L)	Air-fuel ratio	Research octane number
Butanol	29.2	11.2	96
Ethanol	21.2	3	129
Gasoline	32.5	14.6	91–99