Comparison of the regiospecific distribution from triacylglycerols after chemical and enzymatic interesterification of high oleic sunflower oil and fully hydrogenated high oleic sunflower oil blend by carbon-13 nuclear magnetic resonance

•Sunflower oil and hydrogenated sunflower oil blends.•Enzymatic interesterification.•Chemical interesterification.•Triacylglycerol fatty acids regiospecific analysis by 13C NMR. The nutritional and organoleptic attributes of oils can proceed via interesterification of oils blends catalyzed by enzyme...

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Published in:Food chemistry 2016-12, Vol.212, p.641-647
Main Authors: Lopes, Thiago I.B., Ribeiro, Marilene D.M.M., Ming, Chiu C., Grimaldi, Renato, Gonçalves, Lireny A.G., Marsaioli, Anita J.
Format: Article
Language:English
Subjects:
13C NMR
Ascomycota - enzymology
Carbon Isotopes - chemistry
Catalysis
Enzymes, Immobilized - chemistry
Esterification
Fatty Acids - chemistry
Fatty Acids, Unsaturated - chemistry
Fourier Analysis
Helianthus
High oleic sunflower oil
Hydrogen
Hydrogenation
Interesterification
Lipase - chemistry
Magnetic Resonance Spectroscopy
Plant Oils - analysis
Regiospecificity
Solvents - chemistry
Stereoisomerism
Sunflower Oil
Thermomyces lanuginosus
Triglycerides - chemistry
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Summary:•Sunflower oil and hydrogenated sunflower oil blends.•Enzymatic interesterification.•Chemical interesterification.•Triacylglycerol fatty acids regiospecific analysis by 13C NMR. The nutritional and organoleptic attributes of oils can proceed via interesterification of oils blends catalyzed by enzymes or chemicals. Enzymatic interesterification processes are preferred due the regiospecific outcome. Traditionally, monitoring of distribution of fatty acids (FA) in glycerol backbone is performed by enzymatic and chromatographic methods that are time-consuming, involving a series of chemical manipulations employing large volumes of organic solvents. Alternatively, carbon-13 nuclear magnetic resonance (13C NMR) is a fast and reliable technique that could be applied to determine the saturated and unsaturated FA distribution of the triacylglycerols (TAGs) present in high oleic sunflower oil (SO) and fully hydrogenated high oleic sunflower oil (HSO) blends and their interesterification products. The enzymatic interesterification was conducted employing the immobilized lipase from Thermomyces lanuginosus (Lipozyme TL IM), the results show that the process was not completely regiospecific at sn-1,3 positions, due to the spontaneous acyl migration from position sn-2 to sn-1,3.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2016.06.024