The term oil has traveled a long history until reaching its current form and meaning: from the Aramaic word zayta went to the Arabic term azzayt and then it happened to be interpreted as azzayt. The concept, according to the official definition, allows naming the liquid and fat substance that is obtained from the treatment of different seeds and fruits , as with soybeans, almonds, coconut or corn.
Oil can also be obtained through pressing olives , derive from some animals (such as cod, seal or whale) and get at distill certain bituminous minerals or lignite, peat and coal.
It should be noted that oil is also synonymous with oil (from the Latin term oleum), although this word is only used to refer to sacraments of the Catholic Church or as part of the language of the painting.
On the other hand, the combustible oils they constitute yellowish liquid mixtures that are born from Petroleum crude or vegetable substances (in these cases, there is talk of biodiesel or biofuels). These oils can be used as solvents or as fuel for engines, lamps, stoves and ovens.
The oils can be divided, according to their characteristics, into virgins and refined . Virgin oils are obtained from a cold pressing (below 27ºC) that allows to preserve the flavor of the seed or the fruit from which they are extracted, or by means of a centrifugation at 3,200 revolutions per minute and filtration.
Refined oils, on the other hand, are subjected to a process specific and are deodorized. As a result, these oils have a clean appearance and a standard color, and offer better preservation.
In some cases, they are used blends of virgin and refined oils, with the aim of providing flavor to the latter.
The impact of oil on human life
The organism of human beings depends in part on the fatty acids that you get when you ingest oil, since these are essential in many biochemical reactions that take place in the cells and in processes such as the formation of connective tissue, the production of hormones, the promotion of vitamins, cell gestation and the maintenance of its organic compounds, called lipids.
It is known that people who do not eat enough carbohydrates seek the Energy necessary to maintain your metabolism in the fat or lipid reserve; when there is a lack of the latter, as a last resort for survival, muscle tissue itself is consumed.
When there is no consumption of essential oils, it is possible that malformations occur and the nervous system and the endocrine system atrophy, with the consequent imbalance at the cellular level. If our body is unable to perform synthesis based on essential fatty acids, the result will be death or rickets. To prevent this bone disease, it is essential vitamin D support or ergocalciferol, which gives bones The calcium ion it captures.
Finally, it is important to distinguish between the types of oils beneficial to humans from those toxic and harmful. In the first group, we find fish and sunflower, where there is a higher percentage of the so-called essential omega fatty acids. On the other hand, rapeseed oil, which comes from turnip, contains a damaging acid, erucic C 22: 1, which can cause malformations in children and growth disorders.
Many Chilean producers used rapeseed oil for a long time, until various studies scientists warned of its great toxicity; then, its use was increasingly restricted, until completely withdrawn from the market. At present, it is possible to obtain a rapeseed hybrid with a presence of erucic acid less than 0.2%.