What are the benefits of oleic acid?
Oleic acid, also known as monounsaturated fatty acid, is a monounsaturated ω-9 fatty acid, which exists in animals and plants and is called "safe fatty acid" by nutritionists. Oleic acid is an essential unsaturated fatty acid that cannot be synthesized by human body, so it is very precious.
What is the function of oleic acid? Some academic papers show that oleic acid is stable, which can reduce the blood lipid level of patients with hyperlipidemia and prevent cardiovascular diseases. It can reduce serum total cholesterol and low density lipoprotein cholesterol, and keep high density lipoprotein cholesterol from decreasing. Some foreign professors have argued that the diet contains high oleic acid, and the blood produces more oleic acid ethanolamide (OEA), which can control people's appetite and reduce energy intake. At the same time, it can promote fat metabolism and lose weight.
To sum up, oleic acid has the effects of antioxidation, cholesterol reduction, blood lipid reduction, cardiovascular and cerebrovascular health, weight loss and so on.
What is high oleic acid type oil?
Generally speaking, edible oil with oleic acid content above 75% is considered as "high oleic acid oil". This is also recognized as the healthiest and most stable edible oil in the industry. From September, 2065438 to September, 2007, the Industrial Standard of Good Grain and Oil-Edible Vegetable Oil in China issued by the State Grain Administration clearly put forward strict quantitative requirements for oleic acid.
For example, olive oil is of high oleic acid type. Olive oil contains more than 80% unsaturated fatty acids, of which more than 70% are monounsaturated fatty acids, namely oleic acid. This is the most critical reason why people admire olive oil.
Oleic acid content is one of the important indexes to evaluate the quality of edible oil. Vegetable oil with high oleic acid content is considered as a healthy, stable and high-quality edible oil in academic circles.
The origin of olive oil
Olive oil originated in the Mediterranean and is said to have a history of thousands of years. In Mediterranean countries, olive oil has a very important position, which is an important part of daily diet and a way of life. From Italy to Greece, traces of olive oil are everywhere, such as paintings with the theme of olive and cosmetics derived from it. .....
Olive is a long-lived tree. Planting for 4-5 years begins to bear fruit, and the full fruit period can be as long as 50- 100 years. The fruit is very much like jujube. The Mediterranean coast has the most suitable soil and climatic conditions such as temperature, sunshine, air humidity and precipitation for olive growth. Summer is hot and dry, winter is warm and long, and you can enjoy more than 2000 hours of luxurious light warm air every year. Therefore, local olives are recognized as the best source of olive oil raw materials.
Top olive oil is extracted from fresh or mature olive fruits by cold pressing in a purely physical way, which can be regarded as the most natural and simple process. Studies have shown that the incidence of cardiovascular diseases, diet-related cancers and chronic diseases among residents in the Mediterranean region is very low, and the average life expectancy is the highest in the world. This probably has a lot to do with the diet structure of olive oil. One of the important reasons is that olive oil is an important part of the Mediterranean diet. In the west, olive oil is usually called "liquid gold", "queen of vegetable oil" and "Mediterranean manna".
Olive oil is typically characterized by a high content of unsaturated fatty acids. Olive oil is the edible oil with the highest oleic acid content at present. Is the olive oil that has been lifted to the sky really good? Not exactly.
Beneficial components of olive oil
The typical feature of olive oil is its high oleic acid content, which is beneficial to control blood lipids, prevent blood coagulation and prevent the formation of atherosclerotic plaques. It contains antioxidants such as olive polyphenols, squalene and β-sitosterol, which is helpful to prevent cardiovascular diseases. Compared with soybean oil, vitamin E content is not high.
A lot of things about olive oil will continue in the next issue.