酸浸超声预处理辅助水酶法提取火麻籽油  

Technology for aqueous extraction of hempseed oil by ultrasound-assisted acid immersion pretreatment

作　　者：王宇凡 张文斌 徐琳娜[1,3] WANG Yufan;ZHANG Wenbin;XU Linna(Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province,Jiangnan University,Wuxi 214122,China;School of Food Science and Technology,Jiangnan University,Wuxi 214122,China;Grain and Oil Quality Monitoring Institute in Suzhou Province,Suzhou 215007,China)

机构地区：[1]江苏省食品安全与质量控制协同创新中心,江苏无锡214122 [2]江南大学食品学院,江苏无锡214122 [3]苏州市粮油质量监测所,江苏苏州215007

出　　处：《食品与发酵工业》2021年第23期169-175,共7页Food and Fermentation Industries

基　　金：国家食品科学与工程一流学科建设项目(JUFSTR20180202);油脂与蛋白高功能性增值产品绿色制造研发与示范项目(2016YFD0401404)。

摘　　要：为高效提取火麻籽油,在探索火麻籽预处理条件的基础上,探究了预处理辅助水代法提取火麻籽油的工艺技术。结果表明,火麻籽经过酸浸超声波协同预处理后,在经过3次剪切粉碎和7次精细粉碎后粒径可减小至12.13μm左右,显著提高了水代法提取火麻籽油的提油率,清油得率从预处理前的47.41%提高到82.23%,乳状液和渣相中油脂含量分别降至12.30%和2.14%。进一步优化水代法的工艺条件后,在料液比1∶3(g∶mL),pH 10.0,提取温度60℃,提取时间1.5 h条件下,乳状液经枯草杆菌蛋白酶破乳后,总油得率达到95.36%。后续实验表明,酸浸超声辅助水代法得到的火麻籽油各项理化品质良好,符合国家标准;脂肪酸组成与对照组无显著性差异。该研究为高效提取火麻籽油和利用火麻资源提供了一种新思路,具有广阔的应用前景。To efficiently extract hempseed oil,this study explored the pretreatment conditions of hempseed and explored the technology of extracting hemp seed oil by pretreatment-assisted aqueous extraction processing.Aqueous extraction processing(AEP)is an environmentally friendly method to extract oil from various plants at a moderate temperature.The results showed that the particle size of hempseed was reduced to 12.13μm after three times of shearing and 7 times of fine grinding after ultrasonic-assisted acid immersion,which significantly improved the extraction of hempseed oil by AEP.Free oil yield increased from 47.41%to 82.23%after pretreatment,and the oil in emulsion and sediment phase decreased by 12.30%and 2.14%respectively.The process optimization results of AEP were as follows:solid-to-liquid ratio of 1∶3(g∶mL),pH 10.0,extraction temperature at 60℃and extraction for 1.5 h,the total oil yield reached 95.36%after the emulsion was demulsified by subtilisin.Experiments showed that the physicochemical quality of hempseed oil obtained by AEP with ultrasonic-assisted acid immersion was good and in line with national standards.There was no significant difference in fatty acid composition between the pretreatment and the control group.This research provides a new idea for the efficient extraction of hempseed oil and utilization of hemp resources,which has broad application prospects.

关 键 词：火麻籽油 预处理 酸浸 超声波 水代法 

分 类 号：TQ645.1[化学工程—精细化工]