Studies have shown that the oil mist condensate produced by heating common edible oil to about 270oC will cause chromosome damage in human cells, and the increase of female lung cancer incidence may be one of the important factors. In recent years, in some big cities in China, it has been found that housewives who cook for a long time have a higher incidence of lung cancer. In addition, cooks who are engaged in cooking in the environment with high concentration of kitchen fume are not only prone to lung cancer, but also have obvious harm to intestines, brain and nerves.
For women, another destructive effect of oil fume is to reduce the activity of facial skin factors, making them dark, rough and wrinkled (commonly known as "yellow-faced woman"). No amount of cosmetics can save the harm of oil smoke to youth.
For children, lampblack is also harmful to the body. According to the survey, the incidence of children's cold and cough in families with serious kitchen pollution is above 50%, and the incidence of parents' respiratory system also shows the same trend, but the change is not as obvious as that of children. Children are more sensitive to indoor air pollution and more vulnerable than adults.
Kitchen lampblack is the lampblack produced after cooking oil and food are heated at high temperature. High-temperature cooking is a unique cooking habit in China, so the kitchen fume formed during high-temperature cooking has become one of the main air pollutants in our indoor living environment. In recent years, with the improvement of people's living standards and the development of catering industry, the consumption of edible oil has been increasing, and the harm of lampblack to health has been paid more and more attention.
The main components of kitchen oil fume are aldehydes, ketones, hydrocarbons, fatty acids, alcohols, aromatic compounds, ketones, lactones and heterocyclic compounds.
The toxicity of kitchen fume mainly includes:
Lung toxicity, inhalation of cooking oil fume can cause lung inflammation and tissue cell damage in rats. Abnormal cell cycle and decreased apoptosis rate of lung tissue after inhalation of cooking oil fume in rats may be one of the mechanisms leading to lung cancer in rats.
Immunotoxicity, cooking oil fume can affect the body's cellular immunity, macrophage function, anti-tumor effect and immune monitoring function, thus reducing the body's immune function.
Mutagenicity, there are genotoxic substances in cooking oil fume that can cause gene mutation, DNA damage, chromosome damage and other different biological effects.
Cooking oil fume is potentially carcinogenic to human body. Cooking oil fume has different degrees of abnormal pathological changes in rat testis, and it tends to get worse with the increase of exposure time. The condensate of kitchen oil fume also has a certain effect on the reproductive system of male Drosophila melanogaster, which can lead to infertility.
To sum up, cooking oil fume contains a variety of toxic chemical components, which are genotoxic, immunotoxic, lung toxic and potentially carcinogenic to the body. Cooking oil fume pollution and its harm to human health are indoor environmental problems worthy of attention.