Edible oil is an indispensable "seasoning" in our lives. Because when cooking food, if cooking oil is lacking, the taste of the food will be greatly reduced, and even many people's appetite will be severely reduced.
Due to raw material sources, processing technology and quality, most of the edible oils are vegetable oils and fats . Of course, some people prefer to eat animal fats, such as lard, butter, lamb oil, etc.
[Nutritional Value of Edible Oil]
Edible Oil is one of the indispensable foods in daily diet. It plays an important role in the human body. It is an important source of fat required by the human body and is also the primary source of vitamin e for Chinese residents.
Fat is an important component of the human body. 14% to 19% of a healthy adult's body weight is fat tissue. It protects all organs of our body. Subcutaneous fat tissue can maintain a constant body temperature.
lipids are also the main components of the brain and nervous system , and are closely related to human fertility. The absorption and utilization of fat-soluble vitamins A, D, E, and K are also inseparable from fat. The lack of these substances in the human body will produce a variety of diseases and endanger physical health.
Edible oil is one of the main sources of energy, producing about 39.62kJ of calories per gram of oil and fat, and is also the main source of essential fatty acids - linoleic acid and α-linolenic acid -. Foods cooked with cooking oil not only become raw and cooked, improving taste, but also promoting appetite and increasing fullness.
[Special role of edible oil]
1. Improve memory
Usually people eat more oil to improve memory, because oil can supplement the human body with rich phospholipids and trace element zinc, as well as nutrients such as vitamin e. These substances can promote brain development and also improve brain cell activity. It can not only promote brain development, but also significantly improve people's memory.
2. Prevent cancer
Oil is the best anti-cancer effect among all edible oils, because the oil contains a large amount of resveratrol , which is a natural anti-cancer ingredient. It can prevent human cells from becoming cancerous, and can prevent cancer viruses from regeneration and reproduction in the human body, and can prevent cancer from occurring at the root.
3. Enhance the body's anti-fatigue ability
Eating oil can also enhance the body's anti-fatigue ability, because human fatigue is mostly due to excessive amount of lactic acid in the body, which makes oil a typical alkaline ingredient, and aspartate . After these substances enter the human body, they can accelerate the metabolism of lactic acid in the human body and the amount of lactic acid, and reduce the body's anti-fatigue ability will be improved accordingly.
[The most unhealthy oil is "soybean oil"? 】
Soybean oil is an oil extracted from soybeans, commonly known as "soybean salad oil". This is one of the most commonly eaten cooking oils in life. It is light yellow and clear, with no sediment or bean smell, and it plays an important role in enhancing the color, aroma and taste of food.
Currently some "experts" believe that eating soybean oil regularly is unhealthy, mainly because soybean oil contains " trans fatty acid ". But it should be noted that most of the oils will produce trans fatty acids during the production process, but it is just a matter of how much.
According to information provided by the US Department of Agriculture, 100 grams of soybean oil contains 0.53 3 grams of trans fatty acids WHO before it pointed out that the calories we obtain from trans fatty acids every day should be less than 1% of the total calories.
If a person's total calorie intake per day is 2500 kcal, then the daily intake of trans fatty acids should be controlled within 2.5g. my country's Dietary Guidelines once proposed that normal adults consume less than 30 grams of fat every day.
If all the fats eaten a day are soybean oil, then you will consume 0.16 grams of trans fatty acids every day. It is obvious that this intake is within a safe range. Currently, there are two ways to analyze and extract soybean oil: pressing method and chemical solvent leaching method.
Many people hear the word "chemistry". I feel particularly unsafe because there is a saying that eating soybean oil is unhealthy on the Internet. In fact, this statement itself has certain problems.
Although organic solvents are needed to extract soybean oil using leaching method, it will be removed during the subsequent processing. Simply put, as long as the soybean oil produced by a regular manufacturer fully complies with national standards, it will promote no harm in the body.
Soybean oil contains very high nutrients. As long as you eat soybean oil correctly, it will not cause any damage to the body and will also bring unexpected benefits.
[How to buy soybean oil]
[Sales of soybean oil]
In addition to fat, soybean oil also brings in some non-oil substances during the processing process. The unrefined crude oil contains 1%-3% phospholipids, 0.7%-0.8% sterol substances, as well as a small amount of protein and wheat germ phenol, which can easily cause rancidity. Therefore, if soybean oil is not hydrated and removes impurities, it is not suitable for long-term storage.
In addition, during long-term storage of refined soybean oil, the oil color will gradually darken, which may be related to the automatic oxidation of oil. Therefore, when the color of soybean oil becomes darker, it is not advisable to store it for a long time.
[Exhortation: If you can avoid eating these five cooking oils, don’t eat them]
—— [Trans fatty acids]
Trans fatty acids make many people feel confused. You need to note that there are many alias of trans fatty acids, such as hydrogenated vegetable oil , margarine, margarine, generation cocoa butter , refined vegetable oil, vegetable butter, margarine, etc.
When we buy snacks, we can observe the ingredients list. Basically, there are these nicknames that contain trans fatty acids. Eating them frequently in the body will inevitably bring certain health threats, such as obesity and cardiovascular and cerebrovascular diseases , etc.
trans fatty acids are metabolized slowly in the human body. According to people's surveys, it will take about 2 months to calculate from taking trans fatty acids to being completely discharged from the body.
Regularly eating foods rich in trans fatty acids will affect your own metabolism speed, which will also make your body fatter and more likely to increase the risk of cardiovascular and cerebrovascular diseases. Therefore, I hope you can control your mouth for this oil.
—— [Animal Oil]
Animal Oil mainly includes fats such as pigs, beef and sheep. Compared with vegetable oil, animal oil is more fragrant and delicious. However, animal oil is mainly saturated fat, and eating it regularly will bring health risks to the body.
study found that if you eat a lot of animal oil frequently, it will increase the cholesterol , triglyceride , and low-density lipoprotein in the blood.
When blood lipids increase, it will damage the endothelium of the vascular system, which will easily lead to fat deposits in the damaged blood vessels, and may even trigger an immune response, forming atherosclerosis, endangering blood vessel health.
The melting point of animal oil is higher than that of vegetable oil. Therefore, eating animal oil frequently will also increase the burden on the gastrointestinal tract and cause symptoms such as abdominal pain, bloating, nausea, etc.
—— [Self-pressing oil]
Self-pressing oil must be considered a healthy oil, and it is green and pollution-free, but this is not the case. When we go to a small workshop to press oil with the materials ourselves, we will find that the hygiene conditions are very poor and dust can be seen everywhere in the naked eye.
Even if the sanitary conditions of the small workshop meet the standards, there is a high probability that self-extrusion of oil is not safe. The self-extruded oil is "brown oil", which actually contains a lot of impurities, such as moisture, phospholipids, protein , free fatty acid , pigments, heavy metals, etc.
self-extruded oil has not been further refined. Among them, mustard glucosinolate and erucic acid will seriously exceed the standard. Long-term consumption of it will increase the risk of cardiovascular disease, and may even affect normal fertility function, which may also increase the chance of cancer.
Because we cannot guarantee whether our raw materials are really moldy, some aflatoxin is not visible to the naked eye. After the oil is pressed, it will be brought into the oil, causing contamination of edible oil and increasing the liver's metabolic burden.
—— [Critical blending oil]
blending oil is a cooking oil that mixes more than two refined oils and fats in a specific proportion. It is generally believed that olive oil, peanut oil, corn germ oil, sunflower seed oil, , camellia oil, has a high nutritional value and has a certain health effect on the human body.
Consumers cannot determine the proportion of oil in blended oil. Many blended oils, engine oil is genetically modified oil or inferior oil, such as: genetically modified soybean oil, palm oil , so there is a reason for the low price of blended oil.
There are many blending oils on the market that sound very good, such as: blending camellia oil, but the real camellia oil content is very small, and most of them are cheap oils.
As long as you see the words "blending oil" and "genetically modified" on the packaging, you must buy it with caution. When purchasing blended oil, you need to read the ingredients list clearly. Now you can select oil based on the raw materials of the oil, which is simple and direct.
—— [Oil frying repeatedly]
Edible oil is a very popular one for many people. Of course, if the cooking oil is not completely used up during use, it will be thrown away. For most people, it feels like a waste. We can see that most vendors will eat cooking oil repeatedly.
However, repeated use of oil will produce a variety of harmful substances, and may also produce carcinogens. The oil that is repeatedly fried is like gutter oil . There is no benefit in eating it into the body, but it will increase the body's metabolic burden.
It is recommended that you do not often eat food sold by small vendors. If you like to eat fried food, you can buy it home and fry it yourself. It is relatively hygienic and safer, and can also reduce the risk of digestive system cancer.
editative oil is crucial to human health, but when buying cooking oil, you must carefully choose it, don’t be greedy for small gains, and don’t be fooled by other people’s sweet words. Only by choosing truly healthy cooking oil can you achieve the effect of strengthening the body. Blindly choosing "low-quality cooking oil" will inevitably cause health damage.
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