Chemical and Stability Characteristics of Structured Lipids from Borage (Borago officinalis L.) and Evening Primrose (Oenothera biennis L.) Oils |
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| Authors: | SPJN Senanayake F Shahidi |
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| Affiliation: | Authors Senanayake and Shahidi are with Dept. of Biochemistry, Memorial Univ. of Newfoundland, St. John's, Newfoundland, CanadaA1B 3X9. Direct inquiries to author Shahidi (E-mail: ) |
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| Abstract: | ABSTRACT: Structured lipids of borage and evening primrose oils containing n-3 fatty acids were produced via acidolysis catalyzed by lipase from Pseudomonas sp. The structured lipids were characterized, and their oxidative stability evaluated under Schaal oven conditions at 60 °C by measuring conjugated dienes (CD), 2-thiobarbituric acid reactive substances (TBARS) and headspace volatile analysis. Among the oils examined, enzymatically modified products gave rise to higher (p # 0.05) CD, TBARS, and headspace volatiles as compared to those of their unmodified counterparts. Introduction of highly unsaturated fatty acids and removal of endogenous antioxidants such as tocopherols might be responsible for this observation. |
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| Keywords: | structured lipids borage oil evening primrose oil oxidative stability Pseudomonas sp lipase |
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