摘要
米糠油由于解脂酶的作用导致其酸价高、色泽深且精炼困难,由于化学脱酸存在精炼率低、助剂残留、炼耗高及副反应多等诸多弊端,使物理法蒸馏脱酸针对高酸值米糠油精炼优势凸显。研究了蒸馏脱酸的精炼效果,考察了脱酸后酸值、色泽的变化。通过单因素与正交试验,优化了米糠油蒸馏脱酸的工艺条件。正交试验以真空度、蒸馏温度和蒸馏时间为因素,获得的最佳条件是真空度90 k Pa,时间1.7 h,蒸馏温度215℃。
Because of role of lipase, rice bran oil is high in acid value, dark in color and difficult in refining. There are many disadvantages in chemical deacidification, such as low refining rate, residual additives, high refining cost and many side effects. Physical distillation acid refining of rice bran oil with high acid value has advantage highlights. Refining effect of distil- lation deacidification was studied, and change of acid value and color after deacidification was investigated. Rice bran oil distil- lation deacidification process condition was optimized through single factor and orthogonal experiment. Orthogonal test was based on vacuum, distillation temperature and distillation time. Optimum conditions were vacuum degree 90 kPa, time 1.7 h, distil- lation temperature 215℃.
出处
《农业工程》
2017年第4期89-91,共3页
AGRICULTURAL ENGINEERING
基金
辽宁省大学生创新创业训练计划"高酸值米糠油物理法蒸馏脱酸的实验研究"(项目编号:201610166021)
关键词
米糠油
蒸馏脱酸法
通气量
游离脂肪酸
Rice bran oil, Distillation acid method, Ventilatory capacity, Free fatty acid （FFA）
