The source of food pollution, when it comes to food pollution, I believe many people don't know much about it. In fact, food pollution means that food is polluted for some reason in the production process. Here I introduce the source of food pollution, hoping to help everyone!

Source of food pollution 1 Food pollution refers to the pollution caused by pesticides, wastewater, sewage, various food additives, pests and diseases and livestock diseases produced in the production and processing of food and its raw materials.

And food mildew caused by mycotoxins, toxic substances in transportation and packaging materials, polychlorinated biphenyls and benzopyrene pollution.

Food pollution also comes from many sources. Let's look at them in detail:

1, artificial: artificial adulteration and forgery during food processing and storage. For example, sand mixed in grain, water injected in meat, and milk powder mixed with a lot of sugar.

2. Soil: There are many pathogenic bacteria in the soil, including Bacillus cereus, Proteus, Botox and Clostridium perfringens. Therefore, when processing food, the soil and other dirt components on food must be thoroughly removed.

3. Insects: Flies and insects play an important role in spreading diseases. In view of the fact that the foraging habits of flies always fly from one place to another, probably from a very dirty place, and directly land on food, the pollution to food is obvious.

Other insects can easily bring dirt into food and cause similar pollution, and some may also cause obvious corruption of food. Therefore, food processing places should have facilities to prevent flies and other insects.

4. Pets and other animals: It is common for animals to have pathogenic bacteria in the gastrointestinal tract. For example, it is normal to isolate salmonella and other pathogenic bacteria from cattle, livestock, birds, turtles, rodents and many wild animals.

Therefore, in the catering business, any animal feces and body surface pollutants may pollute food. Rats and other rodents can spread many diseases, and pathogens can spread to food through their urine and feces, or saliva when biting food. Therefore, it is forbidden to keep animals in food processing places.

5. Seafood: The oceans in many places are polluted, and the pollution sources include human excrement or sewage discharged into the sea by polluted rivers.

Fish and shellfish, especially molluscs, are easily infected by pathogens. Mollusks can also be infected with pathogens while filtering seawater to get food.

If you eat shellfish raw, you are easily infected. Due to marine pollution, offshore aquatic products are easily infected with pathogenic microorganisms (including pathogenic bacteria and viruses). Therefore, it is not recommended to eat seafood raw. The safest way to eat seafood is to cook it thoroughly.

6. Eggs: It is an indisputable fact that the eggshell of an egg is easily infected with Salmonella. Hands are polluted in the process of taking eggs and beating eggs. Wash your hands after handling raw eggs. When processing cakes and other pastry foods, the eggshell should be cleaned and disinfected first to avoid food contamination by Serratia on the eggshell surface.

Sources of food pollution The sources of food pollution are:

(1) biological pollution

Biological pollution of food includes microbial, parasite, insect and virus pollution. Microbial pollution mainly includes bacteria and bacterial toxins, molds and mycotoxins.

Bacteria in food include not only pathogenic bacteria that can cause food poisoning and infectious diseases of people and animals, but also non-pathogenic bacteria that can cause food spoilage and can be used as a sign of product pollution.

Parasites and eggs mainly pollute food indirectly or directly through the feces of patients and sick animals and through water or soil.

Insect pollution mainly includes beetles, mites and moths in grain, flies and maggots in animal food and fermented food. Virus pollution mainly includes hepatitis virus, polio virus and foot-and-mouth disease virus, and other viruses are not easy to reproduce in food.

(2) Chemical pollution

The chemical pollution of food involves a wide range and the situation is complicated.

Mainly includes:

(1) pollutants from production, life and environment, such as pesticides, veterinary drugs, toxic metals, polycyclic aromatic hydrocarbons, N- nitroso compounds, heterocyclic amines and trichloropropanol;

(2) Harmful substances dissolved in food when food containers, packaging materials and means of transport come into contact with food;

(8) Abuse of food additives;

④ Substances produced during food processing and storage, such as harmful alcohols and aldehydes in wine;

⑤ Substances added in the process of adulteration and falsification.

(3) physical contamination

Mainly from a variety of complex non-chemical impurities. Although some pollutants may not threaten the health of consumers, they seriously affect the sensory characteristics and/or nutritional value of food, and the quality of food cannot be guaranteed.

Mainly includes:

(a) pollutants produced in the process of food production, storage, transportation and sales, such as grass seeds, sundries in liquid food containers, dust and flies in the process of food transportation and sales;

(2) food adulteration, such as grain mixed with sand and stones, water injection into meat, milk powder mixed with a lot of sugar, etc. ;

③ The radioactive pollution of food mainly comes from the mining, smelting, production and application of radioactive substances and the pollution caused by accidents.

Sources of pollutants in food

The sources of pollutants in food cover a wide range, but they can basically be divided into three categories: biological pollutants, chemical pollutants and physical pollutants.

Among them, food biological pollutants are the most common factors causing food safety incidents, and their pollution sources mainly include microorganisms (such as bacteria, viruses, molds, etc. ) and parasites.

Among them, microbial pollution is the most, which can account for more than half of food poisoning. Chemical pollutants in food are another common pollutant.

Mainly divided into four categories:

First, pollutants from production, life and environment, such as pesticides, heavy metals and toxic organic compounds;

Second, food containers, packaging materials and other harmful substances dissolved in food when contacting food;

Third, substances added in the process of adulteration and counterfeiting or abuse of food additives;

The fourth is the harmful substances produced in the process of food processing and storage.

Physical pollutants in food are rare in China, which mainly refer to impurities exceeding the prescribed content in food production and processing, or radioactive pollution caused by the absorption of foreign radionuclides by food.

At present, food safety has risen to the national strategic level. In order to grasp the national food pollution situation, China has established a monitoring system for harmful substances in food that seriously endanger human health, and will establish an online reporting and early warning platform for food pollution.

In order to fully understand the pollution status and level of pollutants in food in China and evaluate their harm to health, so as to prevent food pollution and control food-borne diseases.