• 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 ¡ãC, supercritical carbon dioxide (Sc-CO 2) and Soxhlet with hexane and ethanol.
  • 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 are the TPC values of corn oil extracted by hexane?
  • The TPC values of oils extracted at 45 ¡ãC and boiling hexane are consistent with those reported by Shende and Sidhu (2015) for corn oil extracted by hexane (76 mg GAE/kg oil). The highest yield of extraction (37.7 g oil/100 g CG) was obtained by the Soxhlet ethanol method.
  • Does dry milling separate endosperm from corn germ?
  • Although the CG of these three studies were obtained by dry milling, they were not separated from endosperm in the same way. The tempering-degerming process implemented to achieve the corn germ-bran mixture may let more endosperm fractions attached to the germ than the dry mechanical degerming and bran separation implemented by Castelmais.
  • How is pure starch extracted from corn kernels?
  • Pure starch is industrially isolated from corn kernels by a process called dry- or wet-milling that lets the corn germ (CG) as the main residue.
  • How does oil extraction work?
  • The pressing process results in fresh oil, which is collected in plastic sediment containers below. An integrated pump then transports the oil to the plate filter, where residues are effectively removed from the oil.