During the wet milling process, the germ is isolated from the starch using cyclone separators, washed, and dried. The dried germ contains about 50% oil, in which the oil constitutes about 85% of the total amount of oil present in the corn. The oil is produced by first expelling the germ and then extracting the expeller cake with n -hexane.
Can oil and protein extracts be recovered from corn germ?
Oil and proteins were successfully recovered from corn germ by a biorefinery scheme. Oil extraction yield and TPC of oils were influenced by the polarity of solvents. The protein content of recovered extracts ranged from 20 to 48%. The functionality of protein extracts depended on the defatting pretreatment.
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 oil processing by-products?
Corn (Zea mays L.) is one of the most relevant and cultivated cereals. During the processing of corn, especially in obtaining edible oil, large quantities of by-products are generated, called corn germ oil processing by-products. In this sense, this chapter provides…