Corn germ oil extraction
Corn oil (maize oil) is oil extracted from the germ of corn (maize). Its main use is in cooking, has high nutritional value, where its high smoke point makes refined corn oil a valuable frying oil. It is also a key ingredient in some margarines. Corn oil is generally less expensive than most other types of vegetable oils. One bushel of corn contains 1.55 pounds of corn oil (2.8% by weight).
Corn germ oil processing
Basic process of corn germ oil press technology: clean up—crushing—flaking—cooking—corn germ oil pressing—corn germ oil extraction—-corn germ oil refining.
Huatai corn germ oil processing line include pretreatment, extraction, refining plant.
The production of corn oil generally includes two steps: germ separation and maize germ oil pressing.
Corn germ separation
The first step of corn oil processing is the separation of corn germ. There are 3 kinds of corn germ separation methods: dry method, wet method and half-wet (semi-wet) method.
Corn germ pre-pressing process
Generally use screw oil press. To ensure higher oil yield, in addition to meet the above conditions, the pressure of corn oil press shall be above 69 MPa. After pressing, residual oil in the cake is controlled at 6% to 7%, and the moisture content of the cake is 3% ~ 4%. For safety reasons, the moisture content of the cake shall be adjusted to 12%.
Corn oil solvent extraction
The moisture content of the corn germ must be controlled in a proper range to meet later pre-pressing and solvent extraction process moisture requirements. At the same time, proper moisture content is also conducive to the corn germ flakes do not stick to the rolling stock, easy to make maize embryos pressed into uniform slices, and create favorable conditions to reduce residual oil in flakes. The suitable water content of the dried flakes is 10% ~ 11%. To prevent the powder of the flakes, the thickness should be controlled at 0.35 ~ 0.45mm. Steaming, pre-pressing and cooling can further change the internal and external structure of the germ particles, so that the protein can be frozen and modified to reduce the resistance of the oil molecules spread outward, at the same time adjust the moisture and temperature of the material. For the corn germ in pre-pressing &solvent extraction technology, the water requirement of the material shall be controlled at 4% ~ 6%. For 6# solvent oil, the temperature of the feeding corn germ flakes is better controlled at 50 ~ 55℃. The operation of the corn germ solvent extraction, purification, evaporation and solvent recovery is conducted as normal solvent extraction process.
We are more professional in corn germ oil plant turnkey project
Master good or bad of each production technology process will directly affect the quality and yield of corn germ oil, so for continuously research and development of corn germ oil press process is very important,henan huatai has professional research and development team of corn germ oil oil press technology, continuous improvement the technology ,improved the quality and yield of corn germ oil.
We have more than 200 running oil processing plant around the world and have extensive experience in oil mill construction. If you are interested in our Corn Germ Oil Press Machine/Corn Germ Oil Extraction Machine, please leave us a message.