Natural VE can eliminate free radicals, resist oxidation, enhance the body's immunity, and has significant effects on delaying aging, preventing and treating cancer and cardiovascular diseases. It is widely used in the fields of food, cosmetics, and health products.

Natural VE mainly exists in some animal and plant tissues, such as wheat germ oil, soybean oil, and by-products of the oil and fat processing industry such as deodorized fractions and oil residues. Tochiophenol is the most active component in natural VE, and the United States Pharmacopeia stipulates that the purity of tocopherol added to food must not be lower than 96%.

The deodorized fraction (SODD) of soybean oil generally contains only 3% to 5% VE, so there is increasing research on the purification process of natural VE, but the purity of the products is not high. Molecular distillation, as an emerging and mild liquid-liquid separation technology, has the advantages of low operating temperature, high system vacuum degree, short material heating time, and high separation degree. It is particularly suitable for separating high boiling point, thermosensitive, and easily oxidizable tocopherols.

Through multi-stage molecular distillation technology, high-purity VE can be obtained with high product yield.