The production process of vegetable oil involves the removal of oil from plant components, typically seeds. This can be done via mechanical extraction using an oil mill or chemical extraction using a solvent. The extracted oil can then be purified and, if required, refined or chemically altered.
How is edible oil processed?
In the processing of edible oils, the oil is heated under vacuum to near the smoke point or to about 232 °C (450 °F), and water is introduced at the bottom of the oil. The water immediately is converted to steam, which bubbles through the oil, carrying with it any chemicals which are water-soluble.
What is the earliest oil found in Galilee?
The Pearson Guide to the B.Sc. (Nursing) Entrance Examination. Pearson Education India. p. 109. ISBN 978-81-317-1338-9.