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dc.contributor.authorKleiner, Leslie
dc.date.accessioned2014-03-04T20:27:43Z
dc.date.available2014-03-04T20:27:43Z
dc.date.issued2012-05
dc.identifier.otherkleiner_leslie_201205_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/kleiner_leslie_201205_ms
dc.identifier.urihttp://hdl.handle.net/10724/28015
dc.description.abstractStearidonic acid (SDA, 18:4 ω-3) is a polyunsaturated fatty acid that is a metabolic intermediate in the conversion of α-linolenic acid (ALA, 18:3 ω-3) to eicosapentaenoic acid (EPA, 20:5 ω-3). The objective of this research was to explore methods to obtain SDA enriched triacylglycerols (TAGs) and/or their derivatives, from modified soybean oil (MSO) containing ~25% SDA. Argentation silica gel column chromatography led to the isolation of SDA ethyl esters of 97% purity and 71% yield, in a scaled-up process. Enzymatic transesterification (acidolysis) was used to produce a SL with 53.46 ± 1.85% SDA (36.37 ± 3.14% at the sn-2 position). Lipase-catalyzed concentration of SDA by partial hydrolysis of MSO resulted in unhydrolyzed TAG, 1,3-diacylglycerols, 2,3(1)-diacylglycerols, and monoacylglycerols with 58.66 (65.71 at the sn-2 position), 71.22, 70.22 (52.90 at the sn-2 position), and 59.43% SDA, respectively. All the SDA enriched products could have potential use as nutraceutical compounds.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectAcidolysis
dc.subjectArgentation silica gel column chromatography
dc.subjectHydrolysis
dc.subjectStearidonic acid
dc.subjectStructured lipids
dc.subjectWinterization
dc.titleEnrichment of modified soybean oil and its derivatives in stearidonic acid by chemical and enzymatic technology
dc.typeThesis
dc.description.degreeMS
dc.description.departmentFood Science and Technology
dc.description.majorFood Science
dc.description.advisorCasimir Akoh
dc.description.committeeCasimir Akoh
dc.description.committeeWilliam L. Kerr
dc.description.committeeMark A. Harrison


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