Rapeseed is one of the eight major oil crops in the world. Canada, China, India, Pakistan, and EU countries are the major producers of rapeseed. The oil content in rapeseed is 30-45%, and the protein content is 15-20%. Many people will choose rapeseeds oil as their main cooking oil, so buy a rapeseeds oil press machines, and opening a rapeseed oil mill is a good choice. Next, Benteng Machinery will introduce you to everything about rapeseeds oil extraction.
Ⅰ. Advantages of Rapeseeds Oil
Rapeseed oil is rich in vitamin E, carotene, a variety of fatty acids, phospholipids, etc. Rapeseed oil also has the effect of relaxing blood vessels and delaying aging. Therefore, rapeseed oil is very beneficial to the human body, and the absorption rate of rapeseeds oil by the human body can reach 99.99%.
Ⅱ. Process flow of rapeseeds oil
Cold pressing: cleaning-oil pressing-oil filtering
Hot pressing: cleaning-steaming-frying-oil pressing-oil filtering-refining
1. Cleaning: remove impurities so that their content is less than 0.5%
2. Steaming and frying: make the temperature of the oil reach 110-120 degrees, and the moisture content is about 1-1.5%
3. Oil extraction: the thickness of the cake is controlled at 1-1.5mm, and the residual oil rate is less than 6.5%
4. Oil filter: It can filter out the residue and impurities in the oil.
5. Refining: After refining, the oil can be directly used, eaten and sold.
Ⅲ. Complete set of equipment for extracting rapeseeds oil
Vibrating screen-frying pan-oil press-oil filter-refining
Ⅳ. Precautions for Pressing Rapeseeds Oil
1. Fried seeds.
In the process of frying seeds, the process of long-term frying with low fire, high-moisture frying, and low-moisture pressing is adopted.
The purpose of frying over low heat is to make the protein denaturation of the raw material more thorough. When frying seeds with high water content, the content of water in the crude oil is reduced, thereby reducing the color of the crude oil. The pressing temperature is high and the water content is low, so that the residual oil rate in the cake can be reduced. It has been proved by practice that using this method can significantly improve the yield of oil and the quality of oil.
2. Squeezing oil.
Raise the preheating temperature of the oil press equipment to about 110-140 degrees, then pour the fried rapeseed directly into the oil press for pressing, and observe that the oil quality is golden, and the oil cake is flaky and strip-shaped, which is normal. The cake must be formed, if it is not formed, the thickness of the cake needs to be adjusted and controlled.
Ⅴ. Oil Yield of Rapeseeds
The average oil yield of rapeseed is 40%, so if there are 100 kg of rapeseed, about 40 kg of rapeseed oil can be obtained. If the oil yield of your rapeseed is too low, it may be due to the relatively low quality of the rapeseed, or it may be the quality problem of the oil press that leads to the low oil yield.
Ⅵ. Rapeseeds Oil Press Machines
Benteng Machinery is a manufacturer specializing in the production of oil press machines for 30 years. The quality of our rapeseeds oil press machines is very good, and our many customers all give us good feedback and full of praise for our machines. There are many advantages, such as: high oil yield, high output, durable, low noise, simple and convenient operation, etc. One or two people can operate an oil press, which saves labor costs and occupies a small area.