Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: August 7, 2006
Publication Date: October 15, 2007
Citation: Moreau, R.A., Johnston, D., Dickey, L.C., Parris, N., Hicks, K.B. 2007. Aqueous enzymatic oil extraction: a "green" bioprocess to obtain oil from corn germ and other oil-rich plant materials, in "The industrial application of enzymes on carbohydrate based materials, ed by G. Eggleston and J. R. Vercellotti, American Oil Chemists' Society Press, pp 101-120. Book Chapter. Technical Abstract: Several methods have been developed to obtain oil from corn germ and other oil-rich plant materials using aqueous enzymatic methods. Unlike traditional oil extraction methods, these new bioprocesses are performed without the use of presses and without organic solvents. Beginning with olive oil in the pre-Biblical era, oil has been obtained from oil-rich plant materials. The large variations in cell wall ultrastructure and chemical composition (varying proportions of cellulose, hemicellulose and pectin) of oil-rich plant materials have posed a challenge for the development of aqueous enzymatic oil extraction strategies. For most oil-rich plant materials, three types of enzymes (cellulases or proteases or pectinases) have proven to be most effective for the aqueous enzymatic oil extraction. Although the high cost of enzymes is a major hurdle to the commercialization of aqueous enzymatic oil extraction methods, recent advances in enzyme production technology may soon make the processes economically viable.