Various organic solvents and water have been used for the extraction of corn germ oil. The most common commercial process for obtaining oil from corn germ is extraction by n -hexane because of its high extraction efficiency and low process cost.
What are the methods used for extraction of maize (Zea mays L) germ oil?
Methods used for extraction of maize ( Zea mays L.) germ oil – a review The composition of corn oil obtained by the alcohol extraction of ground corn Sequential extraction processing of flaked whole corn: alternative corn fractional technology for ethanol production Corn oil production process.
What is commercial plant germ oil?
Commercial plant germ oil is mainly taken from cereal grain like corn, wheat, and rice bran oil, etc. The germ represents 2%–3% of the grain (corn germ represents 5%), and it is removed during the milling process. The lipid content in the germ varies with the grain types and sometimes it can be as high as 60%.
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.
How is corn germ extracted from starch?
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.
What is corn germ oil?
Corn germ oil is a nutritious and healthy edible oil. It has a transparent golden yellow color and a fragrant fragrance. It is called “liquid gold” by Western countries. Corn germ oil contains 80–85% of unsaturated fatty acids, oleic acid, linoleic acid, and α-linolenic acid. The content of linoleic acid is as high as 56%.