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ARS Home » Research » Publications at this Location » Publication #91970
Title: CHEMICAL REACTIONS OF LIPIDS IN THE PRESENCE OF SUPERCRITICAL FLUIDS: SYNTHETIC AND ANALYTICAL UTILITY

Author
item King, Jerry
item Snyder, Janet
item Frykman, Hans
item Taylor, Scott

Submitted to: Annual Meeting and Expo of the American Oil Chemists' Society
Publication Type: Abstract Only
Publication Acceptance Date: 5/10/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Hydrolysis, esterification, alcoholysis, and hydrogenation are generic reaction types that have been successfully conducted in supercritical fluid media. Research conducted at NCAUR has demonstrated that some of these reaction types can serve a dual functionality, involving not only the synthetic modification of oleochemicals, but also the analysis of a variety yof lipids. Transesterification in SC CO** is particularly appropriate for forming useful industrial esters as well as derivatives for chemical analysis. Examples include the use of FAMES in nutritional analysis as well as industrial analysis of soapstock. Maintenance of catalytic activity in the presence of subcritical and supercritical fluid media is critical in certain reactions. Analytical scale supercritical fluid extraction instrumentation can measure the effective catalytic activity of lipase and non enzymatic catalysts. Esterification reactions can be used to analyze the total lipid content of oilseeds, meats, grain and bakery products, as well as individual moieties such as cholesterol.