What are the physiological functions of polyunsaturated fatty acids

Unsaturated fatty acids are fatty acids that make up body fat and are essential fatty acids for the human body. Unsaturated fatty acids are divided into monounsaturated fatty acids and polyunsaturated fatty acids according to the number of double bonds. Among food fats, monounsaturated fatty acids include oleic acid, and polyunsaturated fatty acids include linoleic acid, linolenic acid, arachidonic acid, etc.

The human body cannot synthesize linoleic acid and linolenic acid, which must be supplemented from the diet. According to the position and function of the double bonds, polyunsaturated fatty acids are divided into -6 series and -3 series. Linoleic acid and arachidonic acid -6 series, linolenic acid, DHA, EPA -3 series.

Does not increase fatty liver pull and so on Easy to digest because it is unsaturated and easy to decompose.

1. Unsaturated fatty acids.

Fatty acids other than saturated fatty acids (fatty acids that do not contain double bonds are called saturated fatty acids, and the main fatty acids of all animal oils are saturated fatty acids, except for fish oil) are unsaturated fatty acids.

Unsaturated fatty acids are a type of fatty acids that make up body fat, and the human body does not have fatty acids that are lacking. According to the number of double bonds, unsaturated fatty acids and fatty acids are divided into monounsaturated fatty acids and polyunsaturated fatty acids.

2. Role. Deep-sea fish oil supplemented with diet can promote the metabolism of saturated fatty acids in the body, reduce and eliminate the harm of animal fats (mainly from fatty meat, dairy products, etc.) in food to the human body, prevent fat from being deposited in the blood vessel wall, inhibit the formation and development of atherosclerosis, and enhance the elasticity and toughness of blood vessels. Reduces blood viscosity and increases the oxygen-carrying capacity of red blood cells.

The main effect of unsaturated fatty acids is to reduce blood cholesterol and triglycerides, and enhance memory and thinking ability.

Polyunsaturated fatty acids can be divided into W3 and W6 polyunsaturated fatty acids according to the position of the first double bond starting from the methyl terminus, among which W3 is a necessity for the human body like vitamins and minerals, and insufficient can easily lead to disorders of important organs such as the heart and brain, and the two most important unsaturated fatty acids in W3 saturated fatty acids for the human body are DHA and EPA, EPA is the English abbreviation of eicosapentaenoic acid, which has the function of cleaning up garbage in blood vessels, commonly known as it"Vascular scavengers"DHA is the English abbreviation of docosahexaenoic acid, which has the effect of softening blood vessels, strengthening the brain and improving eyesight, commonly known as DHA"Brain**"。

The specific effects of polysaturated fatty acids are as follows:

Maintain the relative fluidity of the cell membrane to ensure the normal physiological function of the cell. Esterify cholesterol and reduce blood cholesterol and triglycerides. Reduces blood viscosity and improves blood microcirculation. Improves the activity of brain cells, enhances memory and thinking skills. Positive cover.

Summary. 1. There are different fats.

Unsaturated fatty acids are found in camellia oil, vegetable oil, and fish oil.

Saturated fatty acids are mostly contained in the fats of cattle, sheep, pigs and other animals, and a few plants such as coconut oil, cocoa butter, palm oil, etc. also contain such fatty acids.

2. Chemical structure differences.

The difference between "unsaturated fatty acids" and "saturated fatty acids" is that the former has one or more unsaturated double bonds in the chemical structure, while saturated fatty acids do not have unsaturated double bonds.

3. Stability difference.

Saturated fatty acids are stable and not easily oxidized because they do not have unsaturated bonds; Unsaturated fatty acids, especially polyunsaturated fatty acids, are unstable due to the increase of unsaturated bonds and are easily peroxidized by lipids.

What is the difference between unsaturated fatty acids and saturated fatty acids? Which is good for health?

1. There are different fats in which unsaturated fatty acids exist in tea oil, vegetable oil, and fish oil. Saturated fatty acids are mostly contained in the fats of cattle, sheep, pigs and other animals, and a few plants such as coconut oil, cocoa butter, palm oil, etc. also contain such fatty acids 2. The difference between "unsaturated fatty acids" and "saturated fatty acids" is that the former has one or more unsaturated double bonds in the chemical structure, while saturated fatty acids do not have unsaturated double bonds. 3. Stability difference Saturated fatty acids are very stable and not easy to be oxidized because they have no unsaturated bonds; Unsaturated fatty acids, especially polyunsaturated fatty acids, are unstable due to the increase of unsaturated bonds and are easily peroxidized by lipids.

Unsaturated fatty acids are better for health. Unsaturated fatty acids mainly include monounsaturated fatty acids and polyunsaturated fatty acids, both of which have great health benefits. The essential fatty acids required by the human body are polyunsaturated fatty acids, which can be synthesized into DHA (docosahexaenoic acid), EPA (eicosapentaenoic acid), and AA (arachidonic acid).

They have the effects of lowering blood lipids, improving blood circulation, inhibiting platelet aggregation, inhibiting atherosclerotic plaques and thrombosis in the body, and have a good prevention and treatment effect on cardiovascular and cerebrovascular diseases. DHA can also improve children's learning skills and enhance memory. Monounsaturated fatty acids can reduce blood cholesterol, triglycerides, and low-density lipoprotein cholesterol (LDL-C).

Although unsaturated fatty acids have many benefits, they are prone to lipid peroxidation, resulting in free radicals and reactive oxygen species, which can cause certain damage to cells and tissues. High intake of saturated fatty acids is the main cause of elevated blood cholesterol, triacylglycerol and LDL-C, which secondary to arterial lumen narrowing, atherosclerosis, and increased risk of coronary heart disease.