Abstract: On the basis of adsorption and desorption experiments on the ion-exchange resin column, natural tocopherol purification technology was studied. After the purification by the ion exchange resin, the yield of tocopherol is between 89.8%～ 91.6% and the purity of tocopherol is above 85%. By means of the displacement chromatography, separation of tocopherol homologen is achieved, and the purity of 90% β+γ-tocopherol and 80% δ-tocopherol are obtained.

Key words: tocopherol, ion exchange technology, strong base ion exchange resin, replacement chromatography, fixed bed