Food oils are derived from different natural ingredients which can be used for various reasons pertaining to the consumption thereof. This includes oils of the likes of coconut oil, olive oil, vegetable oils, avocado oil, peanut oil, sunflower oil, flax seed oil and walnut oil to name a few. The different oils vary in nutritional qualities and some are seen as more healthy than others on a consumption basis.
These oils can be used for frying, baking and other types of cooking with different food types. The oils can also be used for food preparation and flavoring if used at room temperature. Oils can also be flavored with various aromatics such as garlic, different herbs and spices, or even chilies.
The health attributes of the different oils are somewhat related to the levels of saturated and unsaturated fats found in the oil itself, which is derived from the ingredients it was made from.
Cooking oils are derived from 3 broad types of extraction namely:
Chemical solvent extraction
Different pressing methods
The methods are also used in combination in larger manufacturing facilities in order to extract the maximum amount of oil possible.
Cooking oils can also be sold refined or unrefined, depending on the consumer base targeted. Refinement of food oils is done with a combination of different methods including the following individual techniques:
Cooking oils can also be recycled for various uses such as animal feed, fuel, production of soap and bio diesel along with other industrial products.