Ethanol Production from Extruded Thermoplastic Maize Meal by High Gravity Fermentation with Zymomonas mobilis

Table 2

Ethanol yield during fermentation of yellow maize with or without extrusion treatment at 20 or 12°P wort with Zymomonas mobilis (ATCC 31822).

Treatment	°P	L (EtOH)/flour Kg	L (EtOH)/starch Kg
Ground maize	12	0.272 ± 0.016	0.387 ± 0.027
	20	0.305 ± 0.011	0.432 ± 0.011
Extruded maize	12	0.312 ± 0.020	0.437 ± 0.042
	20	0.330 ± 0.100	0.468 ± 0.014