How do you pronounce benzoa pyrene? Benzopyrene pronunciation What does benzopyrene mean

Benzopyrene. Pinyin: běn bìng pí

Benzo[a]pyrene, also known as 3,4-benzopyrene, is a by-product produced in daily life or industrial production process, and belongs to polycyclic aromatic hydrocarbons.

One of the most toxic strong carcinogens.

27 October 2017, World Health Organization.

The list of carcinogens published by the International Agency for Research on Cancer (IARC) is preliminarily sorted out for reference, and benzo[a]pyrene and benzo[a]pyrene in alcoholic beverages are in the list of a class of carcinogens.

ben (3 tones) Bing (4 tones) bi (3 tones) a] year alpha, indicating the position, that is, the position where pyrene is connected with the benzene ring, do not read.

Benzo[a]pyrene, also known as 3,4-benzopyrene, is a by-product produced in daily life or industrial production process, and is one of the most toxic carcinogens in polycyclic aromatic hydrocarbons.

On October 27, 2017, the World Health Organization's International Agency for Research on Cancer (IARC) published a preliminary list of carcinogens, and benzo[a]pyrene and benzo[a]pyrene in alcoholic beverages were included in the list of a class of carcinogens.

Benzopyrene pronunciation1.The pronunciation of benzopyrene laughing bend: běn bìng bǐ.

What does benzopyrene mean2.Benzomegaliter pyrene (benzopyrene) is a fused cyclic aromatic hydrocarbon containing benzene ring. The fused position of the benzene ring is different, and the benzopyrene group is divided into two types, benzo[a](1,2-benzopyrene)pyrene and benzo[e]pyrene (4,5-benzopyrene).

Answer]: A carcinogens that have no carcinogenic activity and need to undergo metabolic activation of phase I and phase reactions to have carcinogenic activity are called precarcinogens or indirect carcinogens. The metabolite with carcinogenic activity is finally produced by the metabolic reflux of the precarcinogen, which is called the terminal carcinogen, which is mainly an electrophilic agent.

The intermediate products of pre-carcinogens in the process of metabolically activated vertical growth into terminal carcinogens are called near-carcinogens. Benzo(a)pyrene (BAP) is catalyzed by P450 monooxygenase in vivo to epoxidize the epoxidation of the aromatic ring of the ppu to form a variety of epoxybenzo(a)pyrene, among which 7,8-epoxybenzo(a)pyrene is hydrolyzed under the action of epoxide hydrolase to form the near-carcinogen 7,8-dihydrodiol-BAP, and then the epoxidation reaction catalyzed by P450 is carried out to form the final carcinogen 7,8-dihydrodiol-9,10-epoxy BAP.

Benzopyrene (benzopyrene) is a fused cyclic aromatic hydrocarbon containing benzene ring. According to the different fused positions of benzene rings, there are many isomers of benzopyrene, and there are two common ones, one is benzo[a]pyrene, with a CAS number of 50-32-8, which is carcinogenic; Another benzo[e]pyrene, CAS number: 192-97-2, is strongly carcinogenic.

Benzopyrene is insoluble in methanol and ethanol, insoluble in water, soluble in benzene, toluene, xylene, acetone, ether, chloroform, dimethyl sulfoxide and other organic solvents. Initially isolated from coal tar, it can be detected from soot, tar, asphalt and cigarette smoke, which has a strong carcinogenic effect and can induce lung cancer, and its content in the atmosphere has been included in the routine items of environmental monitoring.

The Chinese name is benzopyrene.

The foreign name is benzopyrene

Chemical formula C20H12

Molecular weight: Appearance pale yellow flake or needle-like crystals.

Pinyin of benzopyrene: běn bìng pí

The Chinese name is benzopyrene.

English name]: benzoapyrene

Synonyms]: benzo(a)pyrene,3,4-benzopyrene [chemical formula]: C20H12

Molecular weight]: melting point]: 175-179

Boiling Point]: 495

Water solubility]: insoluble in water.

Flash point]: 495

Pronounced běn a pí in English abbreviated as BAP, it is one of the strong carcinogens.

Basic Definition.

pí ] 芘芣] refers to mallow in ancient books.

bǐ ] Organic compounds, prismatic crystals, light yellow, insoluble in water. It can be used to make synthetic resins and dyes.

Read bi here

Benzopyrene, also known as benzopyrene, abbreviated as BAP in English, is a common highly active indirect carcinogen and mutagen.

After 3,4-benzopyrene is released into the atmosphere, it is always combined with the aerosols formed by various types of particles in the atmosphere, and the inhalation rate is higher in the inhalable dust particles below 8 microns, which are inhaled into the lungs through the respiratory tract, enter the alveoli and even the blood, causing lung cancer and cardiovascular diseases.

Contaminate**. It exists in the flue gas, cigarette smoke, automobile exhaust produced by the combustion of coal tar, various carbon black, coal, oil, etc., as well as industrial sewage such as coking, oil refining, asphalt, and plastics. In addition to industrial effluents, the BAP in surface water mainly comes from rainwater that washes the atmosphere. Water storage tank and pipe coating leaching.

Benzopyrene compounds in food are mainly used in: contaminating food with benzopyrene during smoking or high-temperature cooking; contamination during food processing; asphalt pollution; Contamination of packaging materials; environmental pollution, etc.

Benzopyrene, also known as benzopyrene ( ) pyrene ( ) and abbreviated as BAP in English, is a common high-activity indirect carcinogen. It mainly exists in the flue gas, cigarette smoke, automobile exhaust produced by the combustion of coal tar, various types of carbon black and coal, oil, etc., as well as in industrial sewage such as coking, oil refining, asphalt and plastics.

In addition to industrial effluent, BAP in surface water mainly comes from rainwater that washes the atmosphere, and leaching of water storage tanks and pipe coatings. After 3,4-benzopyrene is released into the atmosphere, it is always combined with the aerosols formed by various types of particles in the atmosphere, and the inhalation rate is higher in the inhalable dust particles below 8 microns, which are inhaled into the lungs through the respiratory tract, enter the alveoli and even the blood, causing lung cancer and cardiovascular diseases.

Benzopyrene is a type of polycyclic aromatic hydrocarbon (aromatic compound and its derivatives formed by the fusing of two or more benzene rings together). Benzopyrene can be produced in some high-temperature cooking, and some can also be found in industrial settings.

Benzopyrene**.

1.In terms of cooking and processing:

1) Smoked food: The smoke used in smoked food contains polycyclic aromatic hydrocarbons such as benzopyrene, which mainly includes: first, the fuel charcoal used in smoking contains a small amount of benzopyrene, which may be accompanied by smoke to invade the food at high temperatures; Second, during roasting, the thermal polymerization reaction of the caramelization product of the food fat dripping on the fire forms benzopyrene, which adheres to the surface of the food, which is the main benzopyrene in baked food; Third, due to the incomplete combustion of the chemical components of smoked fish or meat, such as sugar and fat, benzopyrene and other polycyclic aromatic hydrocarbons will also be produced; Fourth, when food is carbonized, fats are cleaved at high temperatures, generating free radicals and combining with each other to form benzopyrene.

So, try to eat less smoked food.

2) High-temperature fried food: Benzopyrene will be produced when high-temperature vegetable oil is used many times, and foods that are over-fried and stir-fried. The higher the temperature of the vegetable oil used in the repeated frying of food, the more benzopyrene will be produced.

In addition, when the edible oil is heated to 270, the oil smoke produced contains compounds such as benzopyrene.

Heating above 300 degrees Celsius, even for a short time, will produce a large amount of carcinogen benzopyrene. At the temperature of daily stir-frying, the longer the heating time, the more benzopyrene is produced in the oil. Therefore, home cooking should try to use less high-temperature, long-term, and oily cooking methods to reduce repeated frying and minimize oil smoke, so as to minimize benzopyrene.

2.Environment: polycyclic aromatic hydrocarbons produced by the incomplete combustion of coal and oil in industrial activities enter the atmosphere, and are deposited on the surface of plant leaves or deposited in the soil to be absorbed and metabolized by plant roots, and finally accumulate in plants (for example, some packaging pollution, such as some polycyclic aromatic hydrocarbons in ink, and impure paraffin oil on packaging paper can make food contaminate polycyclic aromatic hydrocarbons; Some traditional agricultural product processing methods may also lead to pollution, for example, farmers in some parts of China dry grain and oil crops on roads paved with coal and coke asphalt, and there are some benzopyrene substances in the asphalt, which may pollute the grain.

Polycyclic aromatic hydrocarbons (PAHs) have strong carcinogenic effects, among which benzopyrene, which contains five benzene rings, is even more notorious, and the International Agency for Research on Cancer classifies benzopyrene as a carcinogen.

Benzopyrene is a strong carcinogen, is a polycyclic aromatic hydrocarbon composed of 5 benzene rings, colorless to light yellow needle-like crystals at room temperature, stable in nature, insoluble in water, slightly soluble in ethanol, methanol and other organic solvents, there are about 20 kinds of polycyclic aromatic hydrocarbons known to have strong carcinogenic effects, benzopyrene accounts for 1% of them 2% is one of the world's three strong carcinogens (Aspergillus flavus, benzopyrene, nitrosamines).

Benzopyrene is mainly used in coal, oil, natural gas, etc. incomplete combustion or pyrolysis products, it is more present in soot, cigarette smoke, smoked food, automobile exhaust, the resulting benzopyrene adsorbed on aerosols and other air particles with the air flow, causing atmospheric pollution, part of the sinking on the surface, causing pollution of crops, after the biological chain transmission, eventually causing food pollution.

At present, many edible oil production enterprises or food processing plants will have the requirement of benzopyrene determination in edible oil, for how to remove benzopyrene in edible oil, for the causes of benzopyrene in edible oil, we have done very detailed tests and trials, and formulated the benzopyrene removal process. After the test results, I hope to continue to strive to make a contribution to food safety and hygiene.