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Title: LIPID RICH COMPOSITIONS, PRODUCTION OF LIPID RICH COMPOSITIONS, PRODUCTION OF FATTY ACID ALKYL ESTERS FROM HETEROGENOUS LIPID MIXTURES

Author
item HAAS, MICHAEL
item Wagner, Karen
item Michalski, Paul
item RUNYON, STAN

Submitted to: Patent Application
Publication Type: Patent Application
Publication Acceptance Date: 8/21/2003
Publication Date: 2/15/2005
Citation: Haas, M.J., Scott, K.M., Michalski, P.J., Runyon, S. 2005. Lipid rich compositions, production of lipid rich compositions, production of fatty acid alkyl esters from heterogenous lipid mixtures. U.S. Patent 6,855,838.

Interpretive Summary:

Technical Abstract: The present invention relates to a method for producing fatty acid alkyl esters, involving esterifying a material containing free fatty acids (FFA) with an alcohol and an inorganic acid catalyst to form a product containing fatty acid alkyl esters, wherein (i) the material contains at least about 40% FFA and is produced by reacting a feedstock with steam and sulfuric acid at a pH of about 1-about 2 or (ii) the material contains at least about 80% FFA and is produced by reacting a feedstock with steam and alkali at a pH of about 11-about 13 and further reacting the feedstock with steam and sulfuric acid at a pH of about 1-about 2. The feedstock may be selected from the oils or soapstocks of soy, coconut, corn, cotton, flax, palm, rapeseed/canola, safflower, sunflower; animal fats; waste greases; and mixtures thereof; or other fully or partially hydrolyzed preparations of such feedstocks. The present invention also relates to a method for producing a lipid rich composition containing at least about 80% FFA, the method involving reacting a feedstock with steam and alkali at a pH of about 11-about 13 and further reacting the feedstock with steam and sulfuric acid at a pH of about 1-about 2. The feedstock may be selected from soy, coconut, corn, cotton, flax, palm, rapeseed/canola, safflower, sunflower, animal fats, waste greases, and mixtures thereof. The feedstock may be selected from the oils or soapstocks of soy, coconut, corn, cotton, flax, palm, rapeseed/canola, safflower, sunflower; animal fats; waste greases; and mixtures thereof; or other fully or partially hydrolyzed preparations of such feedstocks. Furthermore, the present invention concerns a lipid rich composition containing at least about 80% FFA.