| Characterization of stearidonic acid soybean oil enriched with palmitic acid produced by solvent-free enzymatic interesterification. | |
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MedLine Citation:
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PMID: 21830790 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Stearidonic acid soybean oil (SDASO) is a plant source of n-3 polyunsaturated fatty acids (n-3 PUFAs). Solvent-free enzymatic interesterification was used to produce structured lipids (SLs) in a 1 L stir-batch reactor with a 1:2 substrate mole ratio of SDASO to tripalmitin, at 65<sup>o</sup>C for 18 h. Two SLs were synthesized using two immobilized lipases, Novozym 435<sup>®</sup> and Lipozyme TL IM<sup>®</sup>. Free fatty acids (FFAs) were removed by short-path distillation. SLs were characterized by analyzing FFA and FA (total and positional) content, iodine and saponification value, melting and crystallization profiles, tocopherols, and oxidative stability. The SLs contained 8.15 and 8.38% total stearidonic acid and 60.84 and 60.63% palmitic acid at the sn-2 position for Novozym 435 SL and Lipozyme TL IM SL, respectively. The SLs were less oxidatively stable than SDASO due to a decrease in tocopherol content after purification of the SLs. The saponification values of the SLs were slightly higher than the SDASO. The melting profiles of the SLs were similar but the crystallization profiles differed. The triacylglycerol (TAG) molecular species of the SLs were similar to each other with tripalmitin being the major TAG. SDASO's major TAG species contained stearidonic and oleic acids or stearidonic, α-linolenic and γ-linolenic acids. |
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Authors:
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Sarah A Teichert; Casimir C Akoh |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-10 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: - ISSN: 1520-5118 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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