Can a high-shear extrusion system extract oil from corn germ?
As technologies continue to advance, high-shear extrusion systems may offer a more efficient alternative for extracting oil from wet processed corn germ. Extrusion systems like the Anderson Dox Extruder eliminate the need for separate steam heating and drying steps required in traditional stack cooking vessels.
How is corn germ oil extracted from milled corn germ?
Corn germ oil was extracted from milled corn germ using diluted aqueous ethanol as solvent. Batch extractions were carried out in 500 mL glass reactor vessels which were series connected with a constant temperature water bath machine (MP-501 A, Shanghai Yiheng Scientific Instrument Co., Ltd., China).
How does a Dox extruder work?
By combining several processes into one machine, the Dox Extruder can double the capacity of a downstream press, essentially cutting energy usage in half. After extrusion, a screw press like the Anderson Oil Expeller® can extract the oil more efficiently, ultimately extending the equipment’s wear life.
What is corn germ?
Corn germ is a substantial byproduct of the wet milling and alcohol industry of corn. Corn germ (dry) contains 35–56 % oil, with linoleic acid (C18:2) being the predominant fatty acid (49–61.9 %) and the highest level of tocopherol and phytosterol amongst all vegetable oils, which is a cost-effective resource for healthy nutritious oil.