棉籽油脱臭馏出物中生育酚的分子蒸馏工艺研究

[目的]优化棉籽油脱臭馏出物中生育酚的分子蒸馏工艺。[方法]以棉籽油脱臭馏出物为原料,分别按单因素试验和正交试验设定参数进行分子蒸馏,分别对压强、蒸发面温度、进料速度、刮膜转速等操作参数进行考察。[结果]经过单因素试验和正交试验的分析得出:在压强为2.0 Pa,蒸发面温度为95℃,进料速度为0.5滴/s,刮膜转速为300 r/min的条件下,生育酚纯度和蒸馏效率均达到最优,其生育酚含量为31.5%、重组分与轻组分之比(R)为0.25。[结论]该研究为新疆棉籽油脱臭馏出物附加值的提升提供理论和实践依据。

Study on the Molecular Distillation Technology of Tocopherol from Cotton Seed Oil Deodorizer Distillate

[Objective] The research aimed to optimize the molecular distillation technology of tocopherol from cotton seed oil deodorizer distillate.[Method]With cotton seed oil deodorization distillate as raw material,the parameters of molecular distillation was set by the single factor test and orthogonal test,the operating parameters such as pressure,evaporation surface temperature,feeding speed and scraped film speed were investigated.[Result]After the single factor test and orthogonal test,the optimal conditions were as follows:the pressure was 2.0 Pa,the evaporation surface temperature was 95 °C,the feeding speed was 0.5 drops/s,the scraped film speed was 300 r/min.Under these conditions,the purity and distillation efficiency of tocopherols were the best,the tocopherol content was 31.5%,the ratio of the heavy constituents and the light constituents was 0.25.[Conclusion]The study provids the theoretical and practical basis for the improvement of the added value of cotton seed oil deodorizer distillate in Xinjiang.