高酸值米糠油同步脱酸脱蜡工艺  

Simultaneous deacidification and dewaxing of high acid value rice bran oil

作　　者：邹曼 王娟 何东平 胡传荣 高盼 ZOU Man;WANG Juan;HE Dongping;HU Chuanrong;GAO Pan(College of Food Science and Engineering,Wuhan Polytechnic University,Wuhan 430023,China;Key Laboratory of Bulk Grain and Oil Intensive Processing,Ministry of Education,Wuhan Polytechnic University,Wuhan 430023,China)

机构地区：[1]武汉轻工大学食品科学与工程学院,武汉430023 [2]大宗粮油精深加工教育部重点实验室,武汉430023

出　　处：《中国油脂》2021年第7期14-19,共6页China Oils and Fats

摘　　要：以95%乙醇为萃取剂,采用溶剂法对高酸值米糠原油进行同步脱酸脱蜡,以脱酸率、脱蜡率为指标,通过单因素试验和正交试验优化高酸值米糠油同步脱酸脱蜡工艺条件。结果表明:高酸值米糠油脱酸脱蜡最佳工艺条件为卵磷脂添加量0.15%(以95%乙醇质量计)、萃取时间40 min、萃取温度60℃、料液比1∶2.5、萃取次数4次,在最佳工艺条件下米糠油的脱酸率和脱蜡率分别为99.45%和99.86%,精炼得率为65.67%,谷维素、植物甾醇和维生素E保留率分别为87.88%、97.64%和95.15%。With 95% ethanol as extractant, the free fatty acid and wax in high acid value rice bran oil were removed simultaneously by solvent method. Using single factor experiment and orthogonal experiment, the process conditions for simultaneous deacidification and dewaxing of high acid value rice bran oil were optimized with the deacidification rate and dewaxing rate as indicators. The results showed that the optimal process conditions were obtained as follows: dosage of lecithin 0.15%(based on 95% ethanol mass), extraction time 40 min, extraction temperature 60℃, ratio of material to liquid 1∶2.5, and the extraction times 4. Under the optimal conditions, the deacidification rate, dewaxing rate of rice bran oil and refining yield were 99.45%, 99.86% and 65.67% respectively, and the retention rates of oryzanol, phytosterols and vitamin E were 87.88%, 97.64% and 95.15% respectively.

关 键 词：高酸值米糠油 脱酸脱蜡 营养成分 

分 类 号：TS225.1[轻工技术与工程—粮食、油脂及植物蛋白工程] TS224.6[轻工技术与工程—食品科学与工程]