高谷维素米糠油二次碱炼脱酸工艺的优化  

Optimization of Re-refining Deacidification Process of Rice Bran Oil with High Oryzanol

作　　者：屈岩峰 韩茜宇 李淑珍 QU Yanfeng;HAN Xiyu;LI Shuzhen(School of Public Health,Dali University,Dali 671003;Heilongjiang International Travel Health Care Center,Harbin 150090;College of Basic Medical Sciences,Shenyang Medical College,Shenyang 110034)

机构地区：[1]大理大学公共卫生学院,大理671003 [2]黑龙江国际旅行卫生保健中心,哈尔滨150090 [3]沈阳医学院基础医学院,沈阳110034

出　　处：《食品工业》2021年第8期130-134,共5页The Food Industry

摘　　要：米糠油中含有丰富的不饱和脂肪酸、维生素E、甾醇、谷维素等营养成分,其中具有多种生理功能的谷维素含量接近3%。但在米糠油的精炼过程中,谷维素损失较大。以酸值和谷维素保留率为指标,对米糠油的二次碱炼脱酸工艺进行优化,通过单因素试验和正交试验得到二次碱炼的最佳工艺条件:碱液质量分数12%,碱炼脱酸温度50℃,碱炼脱酸时间30 min。以该工艺脱酸得到的米糠油产品谷维素保留率高达89.8%,酸值为0.79 mg KOH/g,色泽较浅。Rice bran oil was rich in unsaturated fatty acids,vitamin E,sterols,oryzanol and other nutrients.The content of oryzanol with multiple physiological functions was close to 3%.In the refining process of rice bran oil,oryzanol was lost greatly.The acid value and the retention rate of oryzanol were used as evaluation indexes to optimize the re-refining deacidification process of rice bran oil.Re-refining deacidification process conditions of rice bran oil were optimized through single factor experiment and orthogonal experiment.The concentration of alkali solution was 12%,the temperature of deacidification was 50℃and the time of deacidification was 30 min.The results showed that the retention rate of oryzanol was 89.8%,the acid value was 0.79 mg KOH/g,and the color was light.

关 键 词：米糠油 二次碱炼 脱酸 谷维素 优化 

分 类 号：TS224[轻工技术与工程—粮食、油脂及植物蛋白工程]