Corn Oil

Title: Corn Oil
Trademarks: Maize oil; Maydol; Mazola (CPC)
Literature References: Obtained as a byproduct by wet milling the grain of Zea mays L., Gramineae for the manuf of corn starch, corn syrup, glucose, dextrins, etc.: E. W. Eckey, Vegetable Fats and Oils (Reinhold, New York, 1954). Constit. Glycerides of the following fatty acids: Myristic 0.1-1.7%, palmitic 8-12%, stearic 2.5-4.5%, hexadecenoic 0.2-1.6%, oleic 19-49%, linoleic 34-62%. Unsaponifiable fraction: 1-3% (g-tocopherol 0.1%, the rest is mostly isomeric sitosterols and wax such as myricyl and ceryl alcohols). The crude oil may contain up to 2% phospholipids (vegetable lecithin, inositol esters). The following constants are for the refined product.
Properties: Yellow oil. Faint characteristic odor and taste. d2525 0.916-0.921. mp -18 to -10°. Titer 14-20°. Flash pt 610°F (321°C). Ignition pt 740°F (393°C). nD25 1.470-1.474; nD40 1.464-1.468. Acid value 2-6. Saponification value 187-196. Iodine value 109-133. Thiocyanogen value 71-77. Hydroxyl value 8-12. Reichert-Meissl value <0.5. Polenske value <0.5. Hehner value 92-96. Classed as a semidrying oil. On prolonged exposure to air it thickens and becomes rancid. Miscible with chloroform, ether, benzene, petr ether. Slightly sol in alc.
Melting point: mp -18 to -10°
Flash point: Flash pt 610°F (321°C)
Index of refraction: nD25 1.470-1.474; nD40 1.464-1.468
Density: d2525 0.916-0.921
Use: As salad and cooking oil; in prepn of margarine. As pharmaceutic aid (solvent). Some use in the preparation of non-yellowing enamel paint.
Corn Steep Liquor Cornus Coroxon Corticosterone Cortol

Corn oil, in a 5 liter plastic bottle
Corn oil, plastic jugs in cardboard boxes, 33 lbs. each

Corn oil (maize oil) is oil extracted from the germ of corn (maize). Its main use is in cooking, where its high smoke point makes refined corn oil a valuable frying oil. It is also a key ingredient in some margarines. Corn oil is generally less expensive than most other types of vegetable oils. One bushel of corn contains 1.55 pounds of corn oil (2.8% by weight). Corn agronomists have developed high-oil varieties; however, these varieties tend to show lower field yields, so they are not universally accepted by growers.

Corn oil is also a feedstock used for biodiesel. Other industrial uses for corn oil include soap, salve, paint, rustproofing for metal surfaces, inks, textiles, nitroglycerin, and insecticides. It is sometimes used as a carrier for drug molecules in pharmaceutical preparations.