Cooking temperature is between 200-300℃, and the generated oil fume contains many harmful substances, including acrolein, benzene, formaldehyde, crotonaldehyde and so on. , are toxic substances and suspected cancer.

It is generally believed that smoking is the cause of lung cancer. However, a recent survey found that many non-smoking families "cook their husbands and wives", but they also suffer from lung cancer. The kitchen fume is the "black hand" hidden behind the scenes.

A recent investigation on the etiology of lung cancer patients found that 70% of male lung cancer patients died of smoking, and only 18% of female patients developed lung cancer because of smoking or long-term passive smoking (the husband smoked and worked in a smoking environment). Among the risk factors of lung cancer in non-smoking women, more than 60% women have been exposed to kitchen fumes for a long time, and they often have smoke irritation in their eyes and throat when cooking. 32% women like to fry food with high-temperature oil when cooking, and the doors and windows of the kitchen are closed, which leads to serious oil smoke pollution in the kitchen environment; 25% of women's kitchens are connected to their bedrooms, and high-temperature oil fumes exist for a long time, even when they sleep.

Causes of cancer caused by oil fume

Experts pointed out that this is first related to the variation of edible oil at high temperature. For example, vegetable oil itself contains more unsaturated fatty acids such as linolenic acid and linoleic acid. When the oil temperature rises to 60℃, it begins to oxidize, and when it rises to 130℃, the oxides begin to decompose, forming a variety of compounds, some of which are carcinogens. When the cooking oil is burned to 150℃, the glycerol in it will generate acrolein, the main component of oil fume, which has a strong spicy taste and has a strong stimulating effect on the mucosa of nose, eyes and throat. When cooking oil is heated above 200℃, oil fume condensate, such as nitrogen oxides, is very toxic. When cooking oil burns to 350℃, the risk of cancer is the highest.

However, the chef thinks that cooking will be more fragrant if the oil smokes before putting food. In fact, the lampblack at this time is harmful to the body. At this time, the cooking temperature is between 200-300℃, and the generated oil fume contains many harmful substances, including acrolein, benzene, formaldehyde, crotonaldehyde and so on. , are toxic substances and suspected cancer.

Ways to stay away from the harm of lampblack

Since soot may induce lung cancer, how can citizens reduce the incidence of lung cancer in their daily lives?

It is best for citizens to wear masks when cooking to minimize the inhalation of lampblack. When cooking, try to use some cooking oil that produces less fumes, and try to use less cooking oil that produces a lot of fumes, such as rapeseed oil and sesame oil. In addition, you can eat more pears at ordinary times, which has the effect of clearing away lung heat. Eating more tremella and kelp is also good for the lungs.

As the "cook" of the family, how long do you have to stay in the kitchen every day in order to present a table of delicious food to your family? Meanwhile, how much soot do you inhale every day? Chinese food has always been famous for its delicious taste, but the cooking process is mostly frying, frying, sliding and frying, which brings a lot of oil smoke to make the kitchen the most polluted space in the family, and the kitchen oil smoke has therefore become an "invisible killer" that threatens people's health.

Kitchen fumes are harmful.

The harm of lampblack mainly includes the following aspects:

First, kitchen fumes invade the respiratory tract, which in turn causes symptoms such as loss of appetite, upset and listlessness, which is called "fume syndrome" in medicine.

Second, kitchen fumes can harm sensory organs. The research shows that when cooking oil is burned to 150℃, glycerol in it will generate acrolein, the main component of oil fume, which has a strong irritating taste and has a strong stimulating effect on nasal, eye and throat mucosa, and can cause respiratory diseases such as rhinitis, pharyngitis and tracheitis.

Third, kitchen fume contains a carcinogen called benzopyrene, which can induce lung cancer after long-term inhalation. In addition, the harm of oil fume to intestine and brain nerve is also obvious.

Fourth, oil fume can cause respiratory diseases. Many women who "cook" don't realize that oil fume is the biggest pollution source of family air environment. The research of Indoor Environmental Monitoring Center of China Interior Decoration Association shows that the kitchen is the most polluted space in the family, and its pollution sources mainly include two aspects: first, harmful gases such as carbon monoxide, carbon dioxide and nitrogen oxides released by cooking fires such as gas and liquefied gas; The second is the oil smoke generated during cooking.

Most housewives in our country don't smoke, but there are still many women suffering from lung cancer. What is the reason? In recent years, medical scientists have studied the causes of the high incidence of female lung cancer, and reached a preliminary conclusion: China women's unique cooking habits, that is, cooking with fire for many years, inhaled a lot of soot, is also an important cause of lung cancer.

Chinese food is characterized by "stir-frying". Many housewives are used to burning the oil in the pot until it smokes, thinking that the fried dishes are fragrant. However, housewives probably don't know that such cooking methods will seriously infringe on health.

Oil fume is a volatile substance produced by pyrolysis of edible oil and food at high temperature, which contains many harmful and even carcinogenic substances. Its main component is acrolein, which has a strong pungent taste and has a strong stimulating effect on nasal, eye and throat mucosa. Long-term inhalation can cause respiratory diseases such as rhinitis, pharyngolaryngitis and tracheitis, and even aggravate asthma, thus increasing the chance of lung cancer.

There is a clever way to stay away from lampblack.

So, how can we stay away from the harm of lampblack? First of all, change the cooking habits, the oil temperature should not be overheated, and the oil temperature should be controlled within 200℃ when cooking (the oil pan smokes). Secondly, when choosing edible oil, we should buy products with guaranteed quality to avoid inferior edible oil producing more harmful substances during heating. In addition, don't use repeatedly boiled and fried oil.

Four coup to reduce kitchen fume

1 trick: change the cooking habit of "stir-frying". The oil temperature should not be overheated, and the oil temperature should not exceed 200℃ (limited to the smoke in the oil pan), which can not only alleviate the "oil fume syndrome", but also effectively preserve the vitamins of the next pot of vegetables.

The second measure: it is best not to fry oil repeatedly. In order to save some oil, some housewives do not throw away the oil used for frying fish and ribs after repeated use, but it also contains many carcinogens. Repeatedly heated cooking oil, such as cooking oil used for frying food for many times, not only contains carcinogens, but also contains more carcinogens in the lampblack it produces, which is more harmful.

The third measure: be sure to ventilate the kitchen. The kitchen should always be naturally ventilated, and at the same time, a range hood with good performance and effect should be installed. When cooking, keep the range hood on, and turn it off after 10 minutes.

The fourth measure: try to use cooking methods such as steaming, boiling and frying. This can not only reduce the consumption of edible oil, but also reduce the damage to food nutrients.

As the saying goes: "three points of medicine, seven points of support, very defensive." This shows the importance of health preservation. In many people's minds, only the elderly need health care, but it is not. Health care is a long road. The sooner you embark on this road, the more you will benefit.