High erucic acid in edible oil
Residents in northwest and central China generally like to eat rapeseed oil. Rapeseed oil is beneficial to gallbladder function, and the human body has high digestion and absorption rate of rapeseed oil. However, many cardiovascular experts at home and abroad have investigated patients with heart disease, and the results show that after receiving a small amount of erucic acid digested by enzymes every day, abnormal cardiovascular function will be overloaded, which is more likely to induce "vascular wall thickening" and "myocardial fat deposition".
At present, there are low erucic acid rapeseed oil brands in the domestic market, and the erucic acid content of the existing low erucic acid rapeseed oil products is less than or equal to 5%, which is still higher than that of foreign rapeseed oil by less than or equal to 0. 1%. Experts suggest that patients with various heart diseases, especially those with coronary heart disease and hypertensive heart disease, try not to eat rapeseed oil with high erucic acid.
The nutrient in the oil is single soybean salad oil. Salad oil is also a common edible oil. According to experts from Li Zhiwei, salad oil is also called "first-class oil" (new national standard). In order to remove the special beany smell of soybean oil, the factory refined the soybean oil through eight processes, making it colorless and tasteless. Therefore, many nutrients in soybean oil itself are inevitably "refined", and the "bean flavor" that Northeast people like is gone.
In terms of nutritional value, soybean oil has a good fatty acid composition and is rich in polyunsaturated fatty acids, which has the function of preventing cardiovascular diseases. It also contains a lot of vitamin E, vitamin D and rich lecithin, which is beneficial to human health. At the same time, experts also stressed that soybean salad oil is not seasoning oil, and its edible quality is not as good as sesame oil, sunflower oil and peanut oil, and it needs to be eaten together with other oils because of its high saturated fatty acid.
Aflatoxin in peanut oil
Because the dishes fried with peanut oil have a strong taste, northerners who love heavy taste especially like the taste of peanut oil. However, experts pointed out that peanut oil has its unique problems and shortcomings.
One of the most serious problems is that peanuts are easily infected with mold and secrete aflatoxin b 1, which is one of the most powerful natural carcinogens in nature and can lead to liver cancer. Some unscrupulous merchants use inferior peanuts or expired moldy peanuts to squeeze peanut oil for huge profits, but consumers can't know whether there is mold in peanut oil through tasting. Once they eat these inferior and harmful peanut oil, it is extremely harmful to their health.
Can aflatoxin, which is very toxic in peanut oil production, be removed? Experts in Li Zhiwei clearly pointed out that after peanut is infected with mold, even if peanut oil is treated by various methods to remove toxins, there may still be a very small amount of aflatoxin residues. Technically, aflatoxin will not be removed in the pure pressing process. At present, some manufacturers in the market tout the "magic" of pressing technology and avoid talking about aflatoxin in peanut oil.
In fact, European and American countries have very strict requirements on peanut oil, stipulating that the content of aflatoxin in peanut oil is below 2ppb, while China stipulates that the content of aflatoxin b 1 in peanut oil is below 20ppb. Although peanut oil that meets the standard only contains a very small amount of toxins, if the human body ingests a large amount of aflatoxin, it is easy to form acute poisoning, leading to liver function damage, liver coma and death.
Experts with the healthiest golden ratio suggest that families should not eat a single oil for a long time, but should change the oil and eat more blended oil, which is beneficial to their health.
Blending oil is made from several different vegetable oils (such as peanut oil, sunflower oil, corn germ oil, corn oil, etc.). ) according to a certain proportion through a special process. Its nutritional content is much higher than that of edible oil with single raw material, and its taste is suitable for China people's eating habits. In the investigation of consumer edible oil, it is found that most families eat the same oil for several years because of insufficient understanding of the health of edible oil.
The World Health Organization, China Food and Agriculture Organization, China Nutrition Society and other authoritative organizations have come to the conclusion that when the balanced ratio of saturated fatty acids, monounsaturated fatty acids and polyunsaturated fatty acids in human diet reaches 1: 1: 1, it is the healthiest and most perfect nutritional structure.
Li Zhiwei experts have repeatedly stressed that eating more blended oil is good for health, and consumers must choose regular and well-known brands when buying oil products to ensure nutrition and health.
Through the analysis of the above common edible oils, we can see that each single oil has its advantages and disadvantages. In order to live a healthy life, consumers should not only care about "taste enjoyment", but also establish the concept of "balanced nutrition" as soon as possible, develop scientific and reasonable eating habits, and bring the healthy concept of "balanced nutrition 1: 1: 1" to three meals a day.