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ARS Home » Research » Publications at this Location » Publication #60865
Title: QUANTITATION OF ESTOLIDES BY FTIR

Author
item Erhan, Selim
item Kleiman, Robert
item Abbott Dr, Thomas

Submitted to: Journal of the American Oil Chemists' Society
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/23/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary: Estolides, a modified fatty acid derived from vegetable oils, have a potential use in lubricants, greases, plasticizers, printing inks and cosmetics. In order to optimize methods of production, a way to easily monitor the amount of this material formed was devised. The method uses the amount of light absorbed.

Technical Abstract: Estolides were produced from meadowfoam oil fatty acids, oleic, linoleic, ricinoleic, 12-hydroxy stearic and cis-5,cis- 13 docosadienoic acids. They were quantitated in reaction mixtures using FTIR analysis and compared with the quantitation by HPLC analysis. The absorbance frequency of estolide carbonyl (1737 cm-1) is different than the lactone carbonyl (1790 cm-1) and acid carbonyl (1712 cm-1). Estolide standards were obtained by wiped-film molecular still distillations and column chromatography.