How to extract oil from corn germ during flour processing?
This work aimed the recovery of oil and protein fractions from corn germ (CG) generated as a by-product during flour processing. Several oil extraction techniques were investigated: hexane at room temperature, hexane at 45 °C, supercritical carbon dioxide (Sc-CO 2) and Soxhlet with hexane and ethanol.
How is corn germ extracted?
The germs were kept in paper bags in the darkened room. The moisture content in the corn germ, determined by drying germ to constant weight at 105 °C, was 3.3 g/100 g. Before oil extraction, the corn germ was ground by a domestic grinder (Braun, Germany) for 2 min.
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 oil recovered from ground corn germ?
Corn germ oil (CGO) was recovered from the ground corn germ by maceration using n-hexane at the ranges of the temperature and the solvent:germ ratio (…