EDIBLE PLANT OIL WHICH WERE REMOVED SATURATED FATTY ACID THEREFROM AND CHEMICAL PROCESS THEREOF

摘要

A method of manufacturing edible oil in which saturated fatty acid is removed by subjecting edible vegetable oil to chemical treatment to remove saturated fatty acid and reconstituting with unsaturated fatty acid is provided. The edible oil contains useful components for the body and is beneficial to human body. First, edible vegetable oil is trans-esterified with C1-8 alkanol in the presence of C1-8 alkoxide catalyst of alkali or alkaline earth metals, neutralized with organic acid or inorganic acid and removed in the alkanol to produce an alkyl ester mixture of saturated and unsaturated fatty acid. Second, the alkyl ester mixture of saturated and unsaturated fatty acid is reacted with urea dissolved in C1-8 alkanol to remove a complex of fatty acid alkyl ester and urea. Then 3mol of the separated unsaturated fatty acid alkyl ester is mixed with triglyceride comprising C1-8 low molecular weight fatty acid and trans-esterified with C1-8 alkanol in the presence of C1-8 alkoxide catalyst of alkali or alkaline earth metals. The vegetable oil is selected from corn oil, bean oil rape seed oil, grape seed oil, linseed oil, sesame oil, olive oil, perilla oil, walnut oil, pine-nut oil, peanut oil, sunflower oil, safflower oil, cotton seed oil, palm oil, red pepper oil, rice bran oil, pumpkin seed oil, green tea oil, Almond oil, evening primrose oil and hazelnut oil.