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Preparation of corn oil

TIME:2014-11-03 10:16:33FROM: AUTHOR:
Preparation of corn oil are mainly extracted from corn germ, corn oil, there are two ways: First, press method, adapted to small and medium sized oil refinery;...

Preparation of corn oil are mainly extracted from corn germ, corn oil, there are two ways: First, press method, adapted to small and medium sized oil refinery; the second is solvent extraction method, adapted to large-scale oil refinery; the third is water enzymatic method, the law in recent years development of new methods to.
At present, most companies find the country produced using corn germ oil press, using this technology the production of corn germ oil, which yield only reach 65%, only a few large companies on the basis of the use of the press law adopted on the same time the solvent extraction method to produce corn germ oil, both of which technology to make corn germ oil output rate reaches 97%.
1, the pre-press process and the general use of screw press. In order to guarantee access to higher oil yield, in addition to satisfying the above conditions, press the pressure 69 MPa or more. After the press cake residue control in the 6% to 7%, cake moisture content of 3% to 4%, for safety reasons, the finished cake moisture should be adjusted to about 12% is appropriate.

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2, leaching moisture corn germ production must be controlled in an appropriate range in order to meet the rear of the pre-press, leaching step for man Baptist blank moisture requirements, but also conducive to the stick when rolling billet roller, easy to make corn germ is pressed into uniform sheet, to reduce the residual oil to create favorable conditions for the blank. After drying to the water blank suitable water is 10% to 11%. Prevent an increase in the blank piece powder degrees, the thickness should be controlled at 0.35 ~ 0.45mm more appropriate. Steamed fried, pre-press, cooling can further alter the structure of the material inside and outside the embryo grain, protein coagulation degeneration, reduce oil molecules outward diffusion resistance, while the regulation of human prepreg moisture and temperature. For pre-press extraction process corn germ, which requires people prepreg moisture control in about 4% to 6% is appropriate. For the 6th solvent oil is concerned, the prepreg temperature is preferably in the 50 ~ 55 ℃. Leaching, purification, evaporation, solvent recovery steam mention leaching process to produce by conventional procedures to operate.