Grinding oilseeds prior to oil extraction may enlarge the interface between material particles and aqueous solvent or enzyme, and then enhance free oil yield. In previous research, colloid milling was employed to mill corn germs (Dickey et al. 2010 ). In this study, a dry milling method was developed to grind corn germ.
How is oil extracted from corn germs?
An improved aqueous extraction method has been established for extraction of oil from corn germs. This method primarily included steam explosion pretreatment and aqueous ethanol extraction. Process variables such as steam pressure, resident time, particle size and ethanol concentration were investigated.
What is corn germ oil?
Corn germ contains a lot of nutrients such as protein, fat and vitamins. The protein content is about 15%, fat content is about 45% (of which 85% are unsaturated fatty acids based on oleic acid and linoleic acid), otherwise, about 8 % of dietary fiber. Corn germ oil is the oil extracted from corn germ at low temperature.
What is corn germ?
Corn germ is a substantial byproduct of the wet milling and alcohol industry of corn. Corn germ (dry) contains 35¨C56 % oil, with linoleic acid (C18:2) being the predominant fatty acid (49¨C61.9 %) and the highest level of tocopherol and phytosterol amongst all vegetable oils, which is a cost-effective resource for healthy nutritious oil.