For extraction of corn oil, compressed carbon dioxide is fed in a SFE reactor, which contains the flaked germ, with temperature close to 50°C and pressure between 351 and 562 kg/cm 2. After depressurizing the system, the oil is collected in a reservoir.
What is solvent extraction of corn germ?
Solvent extraction of corn germ is the process of greater industrial use because it allows the effective extraction of practically all the corn oil leaving a defatted germ meal with less than 1% residual oil.
What is corn germ oil?
Most of the commercial corn oil is extracted from the germ and this is commonly known as ¡°corn germ oil.¡± The germ from wet-milling operations (see Chapter 18) is recovered with up to 50% oil, which must be quickly processed because of its low microbiological and chemical stability.
What is enzymatic extraction of corn oil?
The enzymatic extraction of corn oil is especially promising when applied simultaneously with purely mechanical expelled oil because it significantly enhances yield. The aqueous enzymatic method was developed to extract oil from corn germ without hexane or other organic solvents.