Soybean oil is a common edible oil and a commonly used edible oil in our daily life. It is rich in unsaturated fatty acids, vitamin E, protein and other substances and has rich effects, so it is loved by people. The commonly used soybean oil production processes include pressing and leaching. The pressing method is divided into cold pressing and hot pressing. However, many people think that soybean oil is not suitable for cold pressing. Why is this?
Before answering this question, let’s briefly understand the cold-pressing and hot-pressing processes:
Cold-pressed oil and hot-pressed oil are similar in processing technology. They both apply pressure to the oil through an oil press to squeeze the oil out of the oil. The main difference between hot-pressed and cold-pressed is that the oil is produced during the production process. Temperatures vary during the oil process. The cold pressing process is to select high-quality oils and press them in an environment below 60°C to extract oil. The cold pressing process retains the nutrients of the oil relatively intact and maintains the natural flavor and color of the oils; the hot pressing process is to first pass the oils through high temperature Steaming and frying causes a series of changes inside the oil, destroying the cells of the oil, denaturing the protein, and reducing the viscosity of the oil, making it more suitable for squeezing to extract oil and increasing the oil yield.
Many people think that soybean oil is not suitable for cold pressing because soybean oil contains a beany smell. The beany smell is caused by the presence of linolenic acid and is linoleic acid and needs to be removed by refining equipment, and cold pressing is harmful to The requirements for raw materials are relatively high. For example, immature or bad soybeans may contain aflatoxin, which is a first-level carcinogen. Aflatoxin B1 contained in it is the most toxic. If it is not handled properly or is accidentally ingested, will destroy the cell tissue of the liver, and may cause acute poisoning, such as abdominal distension, diarrhea, nausea, vomiting, etc., seriously damaging the quality of cold-pressed oil, so people will feel that there is a safety hazard.
Regardless of the oil production process, it must be refined and meet national standards before it can be sold on the market, so consumers do not have to worry about the quality of the finished oil. Which process to adopt mainly depends on the needs of users. Therefore, when choosing processing equipment, you must choose a solution that is suitable for development. If you don’t know much about this aspect, you must choose to cooperate with a large and powerful manufacturer. , not only the quality of the equipment is guaranteed, but the selection plan is also scientifically designed, coupled with perfect after-sales service, the production work can be completed safely and orderly!
