In the process of cooking food, you should use edible oil. With the participation of oil, the food becomes more delicious, especially those things that are bitter and not oily , after adding edible oil, it can better attract the taste buds.
For those who cook, they should be aware that different edible oils have different nutrients and prices. See is peanut oil, corn oil, olive oil, rapeseed oil and so on.
There are many types of edible oils that we can buy in the market, and different extraction and pressing processes of edible oils have different nutrition , You can choose according to your own taste and eating habits, but people are more concerned about the safety hazards of edible oil. Some even think that the most unhealthy oil is soybean oil. Is there any scientific basis for this statement?
First let us understand what soybean oil is
The so-called soybean oil is actually the edible oil squeezed and extracted from soybeans. We usually call it soybean salad oil, which is also common in daily life. A commonly used cooking oil juice.
The shelf life of soybean oil is only one year, the better the quality, the lighter the color, generally light yellow and clear , without any sediment, without any beany smell, high-quality soybean oil will be crystallized from the oil when the temperature is lower than 0 degrees Celsius.
Soybean oil of poor quality has a special beany smell and poor thermal stability. Will make more foam, so is soybean oil really unhealthy?
Is soybean oil the most unhealthy oil? Gastroenterologist: 5 kinds of edible oils, black as soon as possible Unhealthy, in fact, it is not! Because the study was issued by an “anti-scientific speech expert” in the United States, he was repeatedly warned by the FDA for false propaganda.
As for the evidence he listed, the idea that soybeans are harmful is an exaggeration, saying that soybean oil reacts when cooked The claim of formula fatty acids is even more nonsense, because almost no fatty acids are produced during the cooking process of soybean oil. Soybean oil contains omega-6 substances, which are one of the essential polyunsaturated fatty acids for the human body. Compared with omega-3 , our intake of omega-6 content is higher.
Scale from control Generally speaking, soybean oil is a good choice. Combining soybean oil with rapeseed oil and flaxseed oil can better reduce the omega-6/omega-3 ratio to a more appropriate state. Organic solvents such as food-grade n-ethane are used in the extraction process of vegetable oil.
This also makes his organic solvents have a low boiling point and are easier to volatilize, and the residual amount will not be harmful to human health Cause harm, so soybean oil is not produced by any chemical solvent, so soybean oil can be eaten with confidence.
Gastroenterology doctor: 5 kinds of edible oil, blacken as soon as possible
The animal oil mentioned here includes pig, cattle and sheep, animal fat, animal oil and vegetable oil are relatively more fragrant than cooking, but it should be noted that animal oil fat is mainly saturated fat, and frequent consumption of animal oil will bring many health problems.
Cholesterol in human blood, triglycerides and low-density lipoproteins increase, the key is that elevated blood lipids will Damage to the blood vessels of the human body is more likely to form arteriosclerosis over time, which is a high risk factor for many cardiovascular diseases.
【 Self-extracted oil】
Many people think that self-extracted oil is healthier to eat, and it is considered good The problem is that the hygienic conditions in the self-extracting oil workshop are not good, and there may be dust visible to the naked eye everywhere. Even if it is a small workshop, the hygienic conditions are up to standard, and there is a high probability that it is not safe.
The crude oil extracted from oil extraction contains more impurities, such as water protein, free fatty acid, pigment Wait, without refining, the glucosinolates and erucic acid in it will exceed the standard, and long-term intake will increase the risk of cardiovascular diseases and even affect fertility.
【trans Fatty acids]
Trans fatty acids make many people confused, but he has other Names, such as margarine, margarine, vegetable butter, etc. When you buy snacks, you can take a look. The ingredient list is basically a different name, but don’t underestimate trans fatty acids.
This substance can cause various problems, such as cardiovascular disease, infertility, obesity Wait, the key is that the metabolism of trans fatty acids in the body is very slow, and it takes at least two months for people to completely excrete them after eating them. If you take 5 grams of trans fatty acids per day, your risk of heart disease will increase by 25%.
repeated Heated oil
Many families prefer to eat fried food, but in the process There will be a lot of oil left in it, and most families will choose to store it and continue to cook or make cold dishes.
However, the oil after repeated heating will produce carcinogens such as benzopyrene and heterocyclic amines, and long-term consumption Such oil is not good for your health.
【 Cheap blended oil]
The so-called blended oil is mainly refined oil according to specific The proportion of edible oil, most people think that the production of peanut oil, corn germ oil, rapeseed oil has high nutritional value and has a health effect on the human body.
Consumers cannot determine the proportion of oil in the blended oil, and many blended oils are genetically modified oil and low-quality Oils, such as palm oil and genetically modified soybean oil, so there is a reason why blended oil is cheap.
When eating cooking oil, it is best to match it reasonably. Don’t eat only one kind of oil for a long time. When buying, you should also check the packaging clearly. If there is a blended oil or genetically modified words, Buy carefully.