SUPERCRITICAL-FLUID FRACTIONATION OF THERMALLY OXIDIZED CANOLA OIL

被引：8

作者：

HANSEN, SL ^{[1
]}

ARTZ, WE ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT FOOD SCI,URBANA,IL 61801

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 1994年 / 71卷 / 06期

关键词：

HEATED OIL HIGH-PERFORMANCE SIZE-EXCLUSION CHROMATOGRAPHY; LIGHT-SCATTERING DETECTOR; OXIDATION; POLYMERIZATION; SUPERCRITICAL FLUID EXTRACTION AND FRACTIONATION;

D O I：

10.1007/BF02540588

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Supercritical fluid extraction procedures were developed to fractionate thermally oxidized canola oil. Canola oil was heated in a sealed glass ampoule for 72 h at 200 degrees C in a forced convection oven. After heating, the percentages of triacylglycerol (TAG) trimer, dimer, monomer and lower-molecular weight (LMW) compounds in the heated oil sample (as determined by high-performance size-exclusion chromatography) were 3.0, 8.4, 81.3 and 7.3%, respectively. The LMW compounds included diacylglycerols, monoacylglycerols and free fatty acids. Fractions of TAG monomer of approximately 98% purity were isolated after extraction at 408 atm for 45 min. After a second extraction at 442 atm for 45 min, a TAG dimer fraction of 95% purity was isolated. Recoveries of TAG monomer and dimer were 96 and 87%, respectively.

引用

页码：615 / 618

页数：4

共 28 条

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