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United States Department of Agriculture

Agricultural Research Service

Title: Extraction Solvents for Oilseeds

Author
item Wan, Peter

Submitted to: Oilseed Processing and Utilization World Conference Proceedings
Publication Type: Proceedings
Publication Acceptance Date: May 5, 1998
Publication Date: N/A

Technical Abstract: Extraction of oil using solvent has an early beginning. Deiss in France received a patent to extract fat from bone and wool with carbon bisulfide in 1855 and a year later, he received additional patents covering the extraction of oil bearing seeds. Since then, various types of solvents including different paraffins, chlorinated and aromatic hydrocarbons, ethyl acetate, ethyl and isopropyl alcohols, acetone, water, etc. have been investigated or used as oilseed extraction solvents. Since 1930, commercial hexane has become the preferred extraction solvent due to its availability and favorable performance characteristics. Historically, processing safety, biorenewability and product quality were the motivating factors to encourage researchers to recommend an alternative solvent to replace hexane. In recent years, the desire to have an environmentally friendly solvent by the oilseed industry is greatly enhanced as the cost of using hexane has been steadily increased with the new government regulations. Another round of research effort to search for a better solvent for oilseed is likely.

Last Modified: 10/1/2014
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