不同萃取方式对小麦胚芽油品质的影响  

Effects of different extraction technologies on wheat germ oil quality

作　　者：张磊[1] 芮家鑫 周晗雨 孙俊[1] ZHANG Lei;RUI Jiaxin;ZHOU Hanyu;SUN Jun(School of Food and Biological Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学食品与生物工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2018年第6期678-682,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：中国博士后科学基金资助项目(2015M581746);江苏省自然科学基金资助项目(BK20150492);江苏省博士后科学基金资助项目(1501105B);江苏大学高级人才科研启动基金资助项目(14JDG159)

摘　　要：研究了亚临界、超声和有机溶剂方式对小麦胚芽油萃取的影响,分析了小麦胚芽油的水分含量、得率、萃取率、酸价、过氧化值、茴香胺值、皂化值、脂肪酸组成和α-VE含量,及其对小麦胚芽油品质的影响.其中,亚临界萃取得到的小麦胚芽油得率、萃取率、皂化值、不饱和脂肪酸含量和α-VE含量最高,分别为(10. 37±0. 12)%,(90. 52±0. 12)%,176. 19 mg·g-1,86. 70%和9 252. 20mg·kg-1,但其酸价、过氧化值和茴香胺值最低,分别为8. 95 mg·g-1,2. 18 mmol·kg-1和0. 46.有机溶剂浸提得到的小麦胚芽油得率、萃取率、皂化值、不饱和脂肪酸含量和α-VE含量最低,分别为(7. 78±0. 15)%,(67. 89±0. 15)%,159. 89 mg·g-1,75. 80%,7 526. 00 mg·kg-1,其酸价、过氧化值和茴香胺值最高,分别为11. 37 mg·g-1,3. 18 mmol·kg-1和0. 96.因此,不同萃取方式对小麦胚芽油的品质会产生一定影响,比较可得亚临界萃取方式获得的小麦胚芽油品质相对较好,提取效率相对较高.To investigate the effects of subcritical,ultrasonic and organic solvent methods on the extraction of wheat germ oil,the corresponding moisture content,yield,extraction rate,acid value,peroxide value,anisidine value,saponification value,composition of fatty acid and Vitamin E(V E)were measured.The results show that yield,extraction rate,saponification value,unsaturated fatty acid andα-V E are the highest by subcritical extraction technology with the values of(10.37±0.12)%,(90.52±0.12)%,176.19 mg·g^-1,86.70%and 9 252.20 mg·kg^-1,respectively.However,acid value,peroxide value and anisidine value are the least with the values of 8.95 mg·g^-1,2.18 mmol·kg^-1 and 0.46,respectively.Yield,extraction rate,saponification value,unsaturated fatty acid andα-V E are the least by organic solvent extraction with the values of(7.78±0.15)%,(67.89±0.15)%,159.89 mg·g^-1,75.80%and 7 526.00 mg·kg^-1,respectively.However,acid value,peroxide value and anisidine value are the highest with the values of 11.37 mg·g^-1,3.18 mmol·kg^-1 and 0.96,respectively.The extraction technology has obvious effect on wheat germ oil quality,and the quality of wheat germ oil is the best by the subcritical extraction technology.

关 键 词：小麦胚芽油 亚临界萃取 超声萃取 有机溶剂萃取 品质 

分 类 号：TS224.4[轻工技术与工程—粮食、油脂及植物蛋白工程]