The oil is then separated from the watery matter and fruit pulp with the use of a press (traditional method) or centrifugation (modern method). After extraction the remnant solid substance, called pomace, still contains a small quantity of oil. One parameter used to characterise an oil is its acidity.
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.
How do you get Gynocardia oil?
A fatty oil is obtained by expression, known officially as gynocardia oil in Britain, as oleum chaulmoograe in the United States. [ 15] Fruits are plucked by climbing the tree or using long sticks with a sickle tied to it. The fruits are peeled by knife and the seeds are washed in water and then dried in sun.