title: Production and stability of structured lipids from algal oils and capric acid.
abstract: This study aimed to incorporate capric acid (CA) into selected algal oils, namely arachidoinc acid single cell oil (ARASCO), docosahexaenoic acid single cell oil (DHASCO) and the OMEGA-GOLD oil rich in dcosahexaenoic acid (DHA) and dosapentaenoic acid (n-6 DPA). Response surface methodology indicated that under optimum conditions (12.3% enzyme, 45 degrees C, and 29.4 h) CA incorporation was 20.0% into ARASCO; (4.2% enzyme, 43.3 degrees C, and 27.1 h) 22.6% into DHASCO and (2.5% enzyme, 46.6 degrees C and 25.2 h) 20.7% into the OMEGA-GOLD oil. Stereospecific analysis indicated that in all oils examined CA was mainly located at the sn-1 and sn-3 positions of the resultant TAG molecules while the highly unsaturated fatty acids being primarily esterified to the sn-2 positions of the three oils. In all cases, enzymatically modified oils were more susceptible to oxidation than their unmodified counterparts.
authors.affiliation: Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X9.
authors.forename: Fayez
authors.initials: F
authors.lastname: Hamam
authors.forename: Fereidoon
authors.initials: F
authors.lastname: Shahidi
mesh_terms: D016718:Arachidonic Acid / Q000737:chemistry; D003652:Decanoic Acids; D004281:Docosahexaenoic Acids / Q000737:chemistry; D004355:Drug Stability; D056890:Eukaryota; D005231:Fatty Acids, Unsaturated / Q000737:chemistry*; D008055:Lipids / Q000138:chemical synthesis* / Q000737:chemistry*; D009821:Oils; D011549:Pseudomonas / Q000737:chemistry / Q000378:metabolism
chemical_list: D003652:Decanoic Acids; D005231:Fatty Acids, Unsaturated; D008055:Lipids; D009821:Oils; D004281:Docosahexaenoic Acids; D016718:Arachidonic Acid; C031071:decanoic acid; C026219:docosapentaenoic acid