Botswana does not produce its own oil. Instead, all of its refined oil needs are supplied by South Africa, except for a small supply to the western part of the country by Namibia. Namibia itself acquires 90 per cent of its petroleum requirements from South Africa.
What is corn oil used for?
Corn oil (North American) or maize oil (British) 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 .
How is corn oil extracted?
Almost all corn oil is expeller-pressed, then solvent-extracted using hexane or 2-methylpentane (isohexane). The solvent is evaporated from the corn oil, recovered, and re-used. After extraction, the corn oil is then refined by degumming and/or alkali treatment, both of which remove phosphatides.