A Process for the Aqueous Enzymatic Extraction of Corn Oil from Dry Milled Corn Germ and Enzymatic Wet Milled Corn Germ (E-Germ) |
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Authors: | Robert A Moreau Leland C Dickey David B Johnston Kevin B Hicks |
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Affiliation: | (1) Crop Conversion Science and Engineering Research Unit, Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, PA 19038, USA |
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Abstract: | A bench-scale aqueous enzymatic method was developed to extract corn oil from corn germ from either a commercial corn dry
mill or corn germ from a newly-developed experimental enzymatic wet milling process (E-Germ). With both types of germs, no
oil was extracted when acidic cellulase was the only enzyme used. Pre-treating dry milled corn germ by heating it in boiling
water or microwave pretreatment, followed by enzymatic extraction with the acidic cellulase resulted in oil yields of about
43% and 57%, respectively. A two-step process, combining both acidic cellulase and alkaline protease treatments, with no heat
pretreatment, achieved oil yields of 50–65% from dry milled corn germ and 80–90% from E-Germ.
Mention of trade names or commercial products in this publication is solely for the purpose of providing specific information
and does not imply recommendation or endorsement by the U.S. Department of Agriculture. |
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Keywords: | Corn Zea mays Oil Enzymes Extraction |
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