The effect of extrusion on characteristics of destarched corn fiber was investigated. Extrusion was conducted
at a screw speed of 300 rpm, feed rate of 100 g/min, feed moisture content of 30%, melt temperature
of 140 C and die diameter of 3 mm. After extrusion, characteristics of raw and extruded
destarched corn fiber were compared. Raw and extruded destarched corn fibers were enzymatically
saccharified and fermented using Saccharomyces cerevisiae (ATCC 24858). Extrusion pretreatment
resulted in low crystallinity index, significant decrease in degree of polymerization and microstructure
disruption of destarched corn fiber for enzymatic saccharification. This provides a significant increase in
xylose yield for fermentation. Significant increase in protein digestibility and free amino nitrogen were
additional benefits of extrusion for yeast nutrient in fermentation. Therefore, extruded destarched corn
fiber significantly increased (p < 0.05) ethanol yield (29.08 g/L) and higher conversion (88.79%) by
improving the physiochemical and functional properties for saccharification and fermentation
The effect of extrusion on characteristics of destarched corn fiber was investigated. Extrusion was conducted
at a screw speed of 300 rpm, feed rate of 100 g/min, feed moisture content of 30%, melt temperature
of 140 C and die diameter of 3 mm. After extrusion, characteristics of raw and extruded
destarched corn fiber were compared. Raw and extruded destarched corn fibers were enzymatically
saccharified and fermented using Saccharomyces cerevisiae (ATCC 24858). Extrusion pretreatment
resulted in low crystallinity index, significant decrease in degree of polymerization and microstructure
disruption of destarched corn fiber for enzymatic saccharification. This provides a significant increase in
xylose yield for fermentation. Significant increase in protein digestibility and free amino nitrogen were
additional benefits of extrusion for yeast nutrient in fermentation. Therefore, extruded destarched corn
fiber significantly increased (p < 0.05) ethanol yield (29.08 g/L) and higher conversion (88.79%) by
improving the physiochemical and functional properties for saccharification and fermentation
การแปล กรุณารอสักครู่..
