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 much oil is produced per hectare per year?
Typical productivity of some oil crops, measured in tons (t) of oil produced per hectare (ha) of land per year (yr). Oil palm is by far the highest yielding crop, capable of producing about 4 tons of palm oil per hectare per year. The following triglyceride vegetable oils account for almost all worldwide production, by volume.
How does a corn mill work?
Corn is placed in a hopper (top right) which slowly feeds it into the grindstone (center). The grindstone grinds the corn into cornmeal, and empties it into a bucket (lower left). The grindstones are turned by the mill’s water-powered turbine. Fubá – Brazil.