Subcritical extraction of flaxseed oil with n-propane: Composition and purity

被引：73
|
作者：
Zanqui, Ana Beatriz [1 ]
de Morais, Damila Rodrigues [3 ]
da Silva, Claudia Marques [1 ]
Santos, Jandyson Machado [3 ]
Marques Gomes, Sandra Terezinha [1 ]
Visentainer, Jesui Vergilio [1 ]
Eberlin, Marcos Nogueira [3 ]
Cardozo-Filho, Lucio [2 ]
Matsushita, Makoto [1 ]
机构：
[1] Univ Estadual Maringa, UEM, Dept Chem, BR-87020900 Maringa, Parana, Brazil
[2] Univ Estadual Maringa, UEM, Dept Chem Engn, BR-87020900 Maringa, Parana, Brazil
[3] Univ Estadual Campinas, UNICAMP, Inst Chem, ThoMSon Mass Spectrometry Lab, BR-13083970 Campinas, SP, Brazil
来源：
FOOD CHEMISTRY | 2015年 / 188卷
关键词：
Flaxseed oil; Subcritical fluid extraction; Tocopherol; Phytosterol; SUPERCRITICAL CO2 EXTRACTION; CHROMATOGRAPHIC ANALYSIS; PHYTOSTEROL CONTENT; PHASE; CHIA;
D O I：
10.1016/j.foodchem.2015.05.033
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Flaxseed (Linum usitatissimum L.) oil was obtained via subcritical n-propane fluid extraction (SubFE) under different temperatures and pressures with an average yield of 28% and its composition, purity and oxidative stability were compared to oils obtained via conventional solvent extraction methods (SEMs). When the oxidative stability was measured by differential scanning calorimetry, the oil was found to be up to 5 times more resistant to lipid oxidation as compared to the SEM oils. Direct infusion electrospray ionization mass spectrometry (ESI-MS) analysis showed characteristic and similar TAG profiles for SubFE and SEMs oils but higher purity for the SubFE oil. The flaxseed oil content of beta-tocopherol, campesterol, stigmasterol and sitosterol were quantified via GC MS. SubFE showed to be a promising alternative to conventional SEM since SubFE provides an oil with higher purity and higher oxidation stability and with comparable levels of biologically active components. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：452 / 458
页数：7
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