Soybean oil is traded at the Chicago Board of Trade in contracts of 60,000 pounds at a time. Prices are listed in cents and thousandths of a cent per pound, with a minimum fluctuation of 5/1000 cents. It has been traded there since 1951.
How is crude oil produced in a soybean crushing plant?
The crude oil is usually water degummed in the crushing plant which generates an additional flow, consisting of gums (or lecithin). Table 1 presents the main quality parameters (optimal contents) of the major products from soybean crushing.
How is soybean oil made?
Shijing, the Book of Odes, contains several poems mentioning soybeans. To produce soybean oil, the soybeans are cracked, adjusted for moisture content, heated to between 60 and 88 °C (140 and 190 °F), rolled into flakes, and solvent-extracted with hexanes. The oil is then refined, blended for different applications, and sometimes hydrogenated.
Can a press cake be used for soybean seeds?
Although it is not used for soybean, the mechanical press process is applied today for seeds with high oil content like sunflower, rapeseed etc., in general for pre-pressed purpose; the intermediate residual oil content in press cake is about 20%.