2008 Annual Report 1a.Objectives (from AD-416) Develop processing technologies to reduce the saturated and trans acids in foods and food oils consistent with desired functional, consumer and health needs. Develop knowledge of the phase behavior of model triglyceride systems and study starch lipid complexes as emulsifier systems. 1b.Approach (from AD-416) Study the catalytic hydrogenation of edible oils under condition where trans isomer formation is suppressed or minimized; develop kinetic models for the reaction and characterize the products. Potential starch/lipid complex emulsifier systems will be prepared and evaluated as candidates for lowfat spread systems. The phase behavior of model triglycerides will be studied by Pulsed Nuclear Magnetic Resonance, Differential Scanning Calorimetry and their solubilities determined from melting point and other thermal data. 3.Progress Report No research was conducted on this project in FY 2008 because of the retirement of both SYs. Three final manuscripts were prepared and published in FY08 (see publication list). Two papers were presented at the 2008 American Oil Chemists' Society (AOCS) Annual Meeting and Expo on "Isotopically labeled fatty acids" and "Application of temperature and silver-ion HPLC to the screening of structured lipids." This project will be abolished and has been merged with 3620-44000-047-00D, "Enhancing Flavor Quality and Oxidative Stability of Edible Vegetable Oils with Phytochemical Antioxidants." This research progress addresses National Program 306, Component 2 of the Action Plan. 5.Significant Activities that Support Special Target Populations None. 6.Technology Transfer Number of Non-Peer Reviewed Presentations and Proceedings 1 Review Publications Christie, W.W., Dobson, G., Adlof, R.O. 2007. A practical guide to the isolation, analysis and identification of conjugated linoleic acid. Lipids. 42:1073-1084. Adlof, R.O. 2007. Analysis of triacylglycerol and fatty acid isomers by low-temperature silver-ion high performance liquid chromatography with acetonitrile in hexane as solvent: limitations of the methodology. Journal of Chromatography A. 1148:256-259. Adlof, R.O., List, G.R. 2008. Synthesis and physical properties of symmetrical and non-symmetrical triacylglycerols containing two palmitic fatty acids. Journal of the American Oil Chemists' Society. 85:99-104.