Cottonseed extraction with mixtures of acetone and hexane

Abstract

Cottonseed flakes were extracted with mixtures of nhexane and acetone, with the concentration of acetone varying between 10 and 75%. Adding small amounts of acetone (≤25%) to nhexane significantly increased the extraction of free and total gossypol from cottonseed flakes. Sensory testing detected no difference in the odor of cottonseed meals produced either by extraction with 100% n-hexane or by extraction with a 10:90 (vol/vol) mixture of acetone/hexane. More than 80% of the free gossypol was removed by the 10:90 mixture of acetone/hexane, whereas pure n-hexane extracted about 47% of the free gossypol from cottonseed flakes. A solvent mixture containing 25% acetone removed nearly 90% of the free gossypol that was removable by extraction with pure acetone; the residual meal had only a minimal increase in odor. In contrast, cottonseed meals produced by extraction with pure acetone had a much higher odor intensity. The composition of the cottonseed crude oil was insignificantly affected by the acetone concentration of the extraction solvent. The results indicate that mixtures of acetone and n-hexane can be used as extraction solvents to produce cottonseed crude oil without the concomitant development of odorous meals.Paper no. J11046 in JAOCS 82, 609-612 (August 2005).

Performance of Nanofiltration Membranes for Solvent Purification in the Oil Industry

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Gossypol as undesirable substance in animal feed - Scientific Opinion of the Panel on Contaminants in the Food Chain

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Extracting organic matter on Mars: A comparison of methods involving subcritical water, surfactant solutions and organic solvents

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