Cottonseed is the seed of cotton crop. The cotton taken from the cotton boll is called seed cotton, and the cotton fibers rolled from the seed cotton are called lint cotton. After the lint is removed from the seed cotton, the cottonseed can be obtained. Cottonseed has a hard brown shell on the outside and varies in shape and size. There are embryos in the seed hull, which is the main part of cottonseed, also known as seed kernels. Seed kernels contain 35-45% oil, 39% protein and 0.2-2% gossypol.
2. Screen out impurities and use vibrating screen to remove impurities.
3. Crushing makes cottonseed more suitable for subsequent processing.
4. Stir-fry, oil is heated, adjust water to ideal state.
5. Extruding or pressing can be done with an extruder to make the raw materials more suitable for leaching, or with a hydraulic press or a screw press to extract more oil.
6. Leaching, solvent extraction, get more oil, or skip this step directly.
7. Refining, which is simply described as removing water, acid, impurities with heavy color, and the odor of oil caused by raw materials.
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