【摘要】 目的 :　研究生育酚在菜籽油精炼过程中的含量与组成变化。方法 :　采用 HPLC法测定生育酚的含量与组成。结果 :　生育酚含量 :毛菜油为 0 .1 30 % ,经脱胶碱炼后为 0 .1 1 9% ,经脱色后为 0 .0 83% ,经脱臭后为 0 .0 69% ;流向副产物中的生育酚为毛油中的 47.1 %。经脱胶碱炼、脱色和脱臭后 ,α-生育酚含量下降率分别为 33.1 % ,49.3%和 1 .7%。结论 :　精炼完成后 ,菜籽油中生育酚、α-生育酚含量均显著下降 ,α-生育酚在生育酚中的比例亦降低。在进行工艺优化、副产物利用及菜籽油氧化稳定性评价时必须考虑这一变化更多还原

【Abstract】 Objective: To clarify the changes of content and composition of tocopherol in rapeseed oil during the refining process. Methods: The content and composition of tocopherol was determined by HPLC. Results: The content of tocopherol in oil is: crude oil 0.1298%, degummed and neutralized oil 0.1189 %, bleached oil 0.0825%, deodorized oil 0.0686%. Compared to crude oil, the total tocopherol content decreased 47.1% after the whole refining process,and the α-tocopherol content decreased 33.1%,66.4%,66.7% after degumming and neutralization, bleaching, deodorization, respectively. Conclusion: The content of tocopherol and α-tocopherol decreases significantly as well as the relative proportion of α-tocopherol in total tocopherol after refining.These changes must be taken into account during the refining technology optimization, utilization of by-products and evaluation of oxidant stability of rapeseed oil .更多还原