Effect on facial skin
Cooking oil fume reduces the activity of epidermal factors of facial skin, making it dark, rough and wrinkled (commonly known as "yellow-faced woman"), and no amount of cosmetics can recover the harm of cooking oil fume to youth.
Effects on lung and liver function
Inhalation of oil fume has obvious effects on the lung function of healthy people and patients with chronic bronchitis, showing that PEFR, V76, Vso and V25 are all significantly reduced, and FVC and FEVl of patients with chronic bronchitis are also significantly reduced. Inhaler has symptoms such as asphyxia, chest tightness, shortness of breath, etc., which shows that oil fume has a strong stimulating effect on airway, causing airway contraction and increasing respiratory resistance. Eight logical non-smoking volunteers were exposed to high concentration cooking oil fume for a short time (65438 0 h) and their lung function was tested. It was found that their vital capacity was significantly lower than that before exposure.
Lipid peroxidation damage
Acute and chronic inhalation of cooking oil fume can increase MDA content and decrease SOD activity in blood, lung and liver tissues of rats. The investigation of occupational population exposed to cooking oil fume showed that compared with non-exposed people, the content of plasma lipid peroxide (LPO) increased, while the activity of plasma VitC, VitE, 9- carotene, erythrocyte SOD and blood glutathione decreased significantly. It shows that cooking oil fume can not only cause lipid peroxidation in the body, but also reduce antioxidant substances, enzymes and activities.
mutagenesis
The investigation of chefs exposed to cooking oil fume showed that the SEC and micronucleus rate of peripheral blood lymphocytes were significantly higher than those of the control group, and increased with the extension of exposure years. A large number of studies show that cooking oil fume contains cytogenetic toxic substances, which can cause different biological effects such as gene mutation, chromosome damage and NDA damage, and it is definitely mutagenic. Its genotoxicity is related to food ingredients, edible oil types and cooking temperature, and its mutagenicity increases with the increase of temperature. Some mutagens in cooking oil fume are also carcinogenic, among which benzopyrene, volatile ammonium nitrite and heterocyclic amines are known mutagens and carcinogens.
Exposure to lampblack and tumor
At present, there is no direct evidence to prove that human oil fume causes cancer, but some epidemiological investigation results show that oil fume is a suspicious factor of nasopharyngeal carcinoma and lung cancer. Case-control studies in Canada, Britain, the United States and Denmark show that chefs in catering industry are at greater risk of lung cancer, nasopharyngeal cancer and esophageal cancer. Cooking oil fume is a suspicious factor of lung cancer, and exposure to kitchen oil fume is also a risk factor of nasopharyngeal carcinoma. Female lung cancer has increased dramatically, and high-temperature oil fume is the culprit.
The research of the "Lung Cancer" research group led by Professor He Yumin of Shanghai University of Traditional Chinese Medicine shows that the risk of lung cancer will increase by 2-3 times if young and middle-aged women are exposed to high-temperature kitchen fumes for a long time.
Due to the toxic smoke produced by high temperature oil fume when cooking in the kitchen, the local environment is deteriorated. Toxic smoke irritates eyes and throat for a long time, damaging respiratory system cells. If it is not protected, it is easy to cause a high incidence of lung cancer.
According to the survey data of malignant tumor incidence published by Shanghai Cancer Institute, lung cancer has become the first malignant tumor in Shanghai, the incidence of lung cancer is second only to breast cancer, and the mortality rate is also the first.
A few days ago, the Interior Decoration Association recently issued the third warning of indoor environmental consumption this year, which said that the oil fume gas contains many substances that are seriously harmful to human body, which not only increases the probability of people suffering from lung cancer, but also causes cell chromosome damage when ordinary cooking oil is heated to about 200 degrees, which is one of the reasons why housewives are prone to aging and illness.
Experts remind female friends who often cook, when cooking, they must be careful not to heat the oil until it smokes, because the higher the oil temperature, the more smoke there is, and the greater the harm. Try to use refined edible oil to reduce pollution. At the same time, you must use an exhaust fan or a range hood when cooking.