Datetime: 2023-07-09 12:08:43 Visit: 0
Pretreatment:
The first step is embryo extraction, embryo extraction is one of the key links of corn oil pressing equipment. According to the different anti-crushing ability of corn embryo and endosperm, the endosperm is crushed by pressing equipment, and then the corn embryo is screened by screening equipment. General corn can extract 4% to 8% of corn embryo, requiring the proposed germ to contain less water, high purity, no impurities, no mildew.
The next is to remove impurities, to clean up thoroughly before pressing, remove impurities, can be purified by vibrating sieve, to remove impurities such as slag and powder in the germ, and improve the purity of the germ. If there are many impurities in the germ, it will not only waste food, but also reduce the oil yield.
The water content of the newly extracted corn germ is about 13%, which is far from the water requirement of human squeezing, therefore, it is necessary to properly bake and dry before pressing, and reduce the water content of the germ to less than 9% to increase the pressing effect.
Pressing:
Press to ensure that the cake temperature is about 100 degrees, so as to facilitate the oil, corn germ oil content is high, can be used twice pressing method, that is, after a press, the corn germ is crushed and steamed again, wrapped in cake, press, press often pay attention to the oil road. The oil yield of corn germ is generally 16%-20%.
The crude oil extracted from the corn oil pressing equipment can be used as cooking oil after 24 hours of natural precipitation, which needs to be refined.
Refining:
Corn oil processing equipment The refining process of corn oil production, whether using oil press press or direct leaching and pre-pressing leaching, the equipment used in the refining corn oil process is basically the same.
1.Crude oil - general refining process - filtration - hydration - deodorization - refined corn oil
2.Crude oil - special refining process (alkali refining - decolorization - dewaxing - impurity removal) - refined corn oil
