浸提法提取杏仁油工艺参数优化

摘要

以苦杏仁为原料，采用有机溶剂浸提法对提取杏仁油参数进行了优化。通过单因素试验和正交试验，探讨了不同因素对浸提法提取杏仁油提取率的影响，确定了正己烷提取杏仁油的最佳提取参数。结果表明：苦杏仁中的脂肪含量49．58％，各因素对杏仁油提取率的影响程度由大到小依次是料液比、提取温度、提取时间、溶剂浓度。正己烷提取杏仁油的最佳工艺参数：料液比1∶11，浸提温度65℃，浸提时间2 h，溶剂浓度60％。在此条件下，杏仁油的提取率为90．02％。%Taking bitter almond as raw material,the extraction parameters of almon d oil by the organic solvent extraction method is investigated.The effects of different influence factors on the extraction yield of almond oil are discussed and the parameters are optimized by single-factor test and orthogonal experiment.The results show that the fat content in bitter almond is 49.58%,the impact order of the influence factors is ratio of solid and liquid>extraction temperature>extraction time>solvent concen-tration.The obtained optimum extraction parameters are solid and liquid ratio of 1∶1 1 ,extraction temperature of 65 ℃,extraction time of 2 h,and solvent concentration of 60%.The oil yield under the optimum condition is 90.02%.