Olive oil is a woody vegetable oil. It is a natural fruit oil juice that is directly cold-pressed from fresh olive oil without heating and chemical treatment. It retains natural nutrients and is considered to be the most suitable fat for the human body. Nutritious grease. Olive oil has a history of thousands of years in the Mediterranean coastal countries. It is known as "liquid gold", "vegetable oil queen", and "Mediterranean honey" in the West. It has excellent natural health benefits, beauty effects and ideal cooking uses.
The International Olive Oil Association divides olive oil into virgin olive oil and refined olive oil in five categories.
Virgin olive oil, also known as natural olive oil, is oil obtained by mechanically cold-pressing and filtering foreign bodies directly from fresh olive fruits. According to the different acidity, it can be divided into three levels:
Extra virgin olive oil: It is the highest grade and highest quality olive oil and is a pure natural product. The taste is excellent, with a light and pleasant plant fragrance, and the acidity does not exceed 1%.
High-quality virgin olive oil: acidity is slightly higher, but not more than 2%, pure and aromatic.
Ordinary virgin olive oil: the taste and flavor are acceptable, and the acidity does not exceed 3.3%.
Refined olive oil refers to the olive oil obtained after the refining of virgin olive oil with an acidity of more than 3.3%, or it becomes "secondary oil". Refined olive oil can be divided into two levels:
Ordinary olive oil: Refined olive oil is mixed with a certain proportion of virgin olive oil to reconcile taste and color, its acidity is below 1.5%, and it is transparent and light golden yellow.
Refined Olive Impurity Oil: It is olive oil extracted from oil residue by refining method and refined.
Olive oil is rich in oleic acid, as well as vitamin A, vitamin B, vitamin D, vitamin E, vitamin K and antioxidants. Olive oil is considered to be the most suitable oil for human nutrition among the fats discovered so far.
The outstanding characteristic of olive oil is that it contains a large amount of monounsaturated fatty acids. In addition to supplying heat energy to the body, monounsaturated fatty acids can also adjust the proportion of high and low density lipoprotein cholesterol in human plasma, which can increase the level of high density lipoprotein HDL (good cholesterol) in the body and reduce low density lipoprotein LDL ( Bad cholesterol) level, which can prevent excessive cholesterol in the body. Therefore, for those who are accustomed to eating meat and lead to excessive intake of saturated fatty acids and cholesterol, choosing olive oil as edible oil can effectively exert its blood lipid-lowering function, which can prevent the occurrence of hyperlipidemia, fatty liver and Protecting the heart can help reduce the risk of rich diseases such as hypertension, coronary heart disease, and stroke.
Olive oil can prevent arteriosclerosis and complications of arteriosclerosis, hypertension, heart disease, heart failure, kidney failure, and cerebral hemorrhage. The omega-3 fatty acids in olive oil can increase the amount of nitric oxide and relax your arteries, thus preventing arterial damage caused by high blood pressure. In addition, omega-3 fatty acids can reduce the viscosity of platelets and the amount of fibrinogen, which greatly reduces the chance of thrombosis.
2. Improve digestive system function
Olive oil contains more unsaturated fatty acids than other vegetable oils, rich in vitamin A, D, E, F, K and carotene and other fat-soluble vitamins and antioxidants, and does not contain cholesterol, so the human body The rate of digestion and absorption is extremely high. It has the functions of reducing stomach acid, preventing gastritis and duodenal ulcer and other diseases; it can stimulate the secretion of bile, stimulate the activity of pancreatic enzymes, degrade oil, and be absorbed by intestinal mucosa to reduce the occurrence of cholecystitis and gallstones.
3. Protect the skin
Olive oil is rich in squalene and essential fatty acids with excellent affinity to the skin, and is quickly absorbed to effectively maintain skin elasticity and moisturization; olive oil is rich in monounsaturated fatty acids and vitamins E, K, A, D, etc. Phenolic antioxidants can eliminate facial wrinkles and prevent skin aging.
4. Improve the function of endocrine system
Olive oil can improve the metabolic function of organisms. Olive oil contains more than 80% of monounsaturated fatty acids and ω-3 fatty acids, and DHA in ω-3 fatty acids can increase the sensitivity of insulin. The more, the more active it is. The latest research results show that after healthy people consume olive oil, the glucose content in the body can be reduced by 12%. Therefore, olive oil has become the best edible oil for prevention and control of diabetes.
5. Benefits to the skeletal system
The natural antioxidants and omega-3 fatty acids in olive oil help the body absorb minerals such as calcium, phosphorus, and zinc, which can promote bone growth, and omega-3 fatty acids help maintain bone density and reduce free radical (Highly Active Molecule) Skeletal osteoporosis.
Therefore, the use of olive oil instead of traditional edible oil in daily life has its merits. People with diseases such as high blood fat can try to improve their diet and recuperate.