Researcher Huang Fenghong from the Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and others have developed a complete set of process equipment for microwave puffed rapeseed peeling and low temperature pressing rapeseed oil.

Compared with European countries, the development of rapeseed cold pressing technology in China started relatively late. Rapeseed peeling, microwave drying, and twin-screw presses developed by Wuhan University of Light Industry and China Oil Crops Research Institute have promoted the progress of cold pressing technology, but There is still a gap between domestic technology and equipment and foreign countries. For example, the cold pressing temperature of a German company is 40 degrees, and the domestic temperature is relatively high at 60-65 degrees. poor.

In recent years, with the continuous improvement of people's living standards, people are increasingly favoring cold-pressed oil in terms of edible oil. Cold-pressed oil has pure natural characteristics, which avoids the adverse effects of traditional high-temperature oil-pressing processing. The natural flavor and color of the oil are preserved in the cold-pressed finished oil, and the physiologically active substances in the oil are completely preserved ( vitamin E has anti-aging function, sterol has the effect of strengthening the skin and enhancing the function of human metabolism ) , and the original flavor of the cold-pressed oil is It is a choice for healthy living.

But not all oils are suitable for cold pressing. Take soybeans, canola, cottonseed, peanuts, and sesame as examples. The beany smell in soybean oil, the spicy taste in canola oil, and the cotton in cottonseed oil are all suitable for cold pressing. Phenolic toxins and aflatoxins in deteriorated oil must be refined to remove them. The aroma of sesame oil and fragrant peanut oil can only be obtained through hot pressing. Small-pressed strong coriander oil products tend to be flavorful, while cold-pressed rapeseed oil is better than color and natural ingredients.