A form of liquid fat is olive oil. From olives the oil is obtained. It is produced by pressing whole olives. The main purpose is cooking, whether deep frying or dressing salads but it can be used for many purposes. Uses like making shampoos, hair foods, pharmaceuticals, soaps and cosmetics are the others. Traditionally, it was used as fuel for lamps. Spain is the main producer of olive oil with the largest percentage of production in the world.
Choosing cold pressed olive oil can be the same as choosing wine. Because the flavors vary, a certain type of oil might be more suited for a particular dish. Classification of oil categories can be according to how it was extracted. Virgin olive oil means that the oil was produced by the use of mechanical means only and no chemical treatment. This includes all grades whether extra virgin, virgin, ordinary virgin or lampante virgin olive oil. Lampante virgin oil was referred to as glaring because of its use for burning in lamps. For human consumption it is not fit unless it is refined. It can be used for industrial processes.
Refined olive oil is made from any grade of virgin olive oil by refining without changing its initial glyceridic structure. Removal is only for color, odor and flavor by refining. This process leaves behind a very pure form of olive oil that is tasteless, colorless and odorless. Olive oil can also be used for lubrication of kitchen machines such as; blenders, cookware and grinders. The other uses of olive oil are; making soap, lamp oil, detergents or as a substitute for machine oil.
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Also, olive oil is used as a base in some cosmetics. From olive oil, monounsaturated fats were found to benefit mood, decrease anger, increase physical activity. It can also be used as a solvent in the synthesis of quantum dots. Its popularity is for skin care too. It can be used in baby massage but studies do not recommend it whether for baby skin or adult skin. There is olive pomace oil as another type of olive oil. There is the crude or refined one.
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With olive oil there are various recipes. As it is suitable for deep frying, refined olive oil should be replaced after several uses. On the other hand, extra virgin oil is suitable for salad dressing. Often it is used with foods that are eaten cold. Olive oil is healthier for consumption as it is believed.
Different labels indicate the mode of processing for the olive oil and the quality. The risk of coronary heart disease might be reduced by eating olive oil. All-cause mortality, cardiovascular events and stroke can be prevented by olive oil consumption. It can also play a protective role against cancer. Olive oil is thought to affect cardiovascular health.