Lipositol, composition and product comprising same and preparation method of the product

The application provides a lipositol, a composition and a product comprising the same and a preparation method of the product. The preparation method includes following steps: (S1): performing an enzymically degumming process with phospholipase C to a residue of vegetable hair oil or hydrated oil to obtain an enzymicated oil residue; (S2): purifying the enzymicated oil residue with a first organic solvent, a second organic solvent and a low-carbon alcohol to obtain the lipositol product, wherein the first organic solvent is selected from one or more of the group of n-hexane, diethyl ether, petroleum ether, chloroform, benzene, dichloromethane and methanol; and the second organic solvent is selected from one or more of the group of acetone, methyl acetate and ethyl acetate. In the application, the content of the phospholipid in the oil residues treated by the enzymical treatment process through the phospholipase C can satisfy a requirement of raw materials of the lipositol. Meanwhile, by means of the first organic solvent, the second organic solvent and the low-carbon alcohol for removing impurities in the enzymicated oil residue, the lipositol is greatly increased in yield and the content of PI therein. In addition, the operations of purifying processes in the preparation method are simple and are easy to control.