1982
DOI: 10.1007/bf02662228
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Petroleum‐free extraction of oil from soybeans with supercritical CO2

Abstract: Full-fat soyflakes are readily extracted with supercritical carbon dioxide (SC-CO 2 ) at pressures of 3,000-10,000 psig and 50 C. Under these conditions, SC-CO 2 has the density of a liquid and the diffusivity of a gas. Therefore, equilibrium solubility is readily achieved in a short-path batch extractor which permits high gas flow rates. Soybean oil extracted with SC-CO 2 is lighter in color and contains less iron and about one-tenth the phosphorus of hexane-extracted crude oil from the same beans. The lower … Show more

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Cited by 184 publications
(97 citation statements)
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“…This is due to its nontoxicity, non-flammability, having low cost, being readily available in bulk quantities, ease of removal from the extracted materials and having a low critical temperature and pressure (31.1 7C and 7.4 MPa, respectively) [7][8][9][10].…”
Section: Introductionmentioning
confidence: 99%
“…This is due to its nontoxicity, non-flammability, having low cost, being readily available in bulk quantities, ease of removal from the extracted materials and having a low critical temperature and pressure (31.1 7C and 7.4 MPa, respectively) [7][8][9][10].…”
Section: Introductionmentioning
confidence: 99%
“…Common gases, such as carbon dioxide (CO 2 ), in their supercritical state have properties and extraction capacities very similar to liquids [18]. Over the past two decades, supercritical fluid extraction (SFE) using CO 2 has been investigated as a possible replacement for n-hexane-based oil extraction [19][20][21][22] owing to its numerous advantages [23][24][25]. By using CO 2 , SFE could be utilized selectively to extract neutral lipids leaving the polar compounds like phenolics and phospholipids in the defatted meal.…”
Section: Introductionmentioning
confidence: 99%
“…[97] More than one billion bushels (30 10 6 tonne) of soybeans are crushed and extracted annually for oil production in the USA. [83][84] Hexane is typically used for extraction of soybean oil although this is not completely selective towards triglycerides, free fatty acids, phospholipids, pigments, and unsaponifiable components. [83] The production costs increase as extra refining steps and energy requirements are needed.…”
Section: Decaffeination Of Coffeementioning
confidence: 99%
“…CO 2 is widely used as an extraction solvent for various applications. These include decaffeination of coffee and tea, [75][76] production of hops extracts for the brewing industry, [77][78] recovery of flavors and aromas from herbs and spices, [79][80] nicotine extraction from tobacco, [81][82] extraction and fractionation of edible oils, [83][84][85] and removal of contaminants as a cleaning procedure. [86][87] The effectiveness of the extraction is highly dependent on the kinetic extraction properties of the raw materials, solvent strength, and the operating conditions.…”
mentioning
confidence: 99%