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Reasons: 1. "Luminous pork" is a phenomenon in which pork emits green or blue fluorescence in the dark, and in recent years, such phenomena have been found in Hunan, Shaanxi, Qinghai and other regions. Consumers were once panicked about the quality of pork.
As for the "pork luminescence phenomenon", according to the reports of various parties, there are different statements and no authoritative conclusions. Several of the mainstream sayings are, first.
1. Copper content (copper sulfate) is used in pig breeding.
Too much feed causes the pork to glow (high copper is added to the feed, and a large amount of copper sulfate is deposited in the muscle tissue during metabolism, which appears blue in low light). Clause.
2. In the process of slaughtering, transportation and storage, the storage conditions are not suitable, and the production of luminescent bacteria is caused. Thirdly, a growth agent is added to the feed during the feeding process. When these growth agents enter the pig's body, they cause the appearance of some chemical enzymes that cause the pork to glow.
Xinhua News Agency, December 6, 2010.
According to the report, Hunan researchers found that the "pork luminescence" was caused by contamination with the luminescent bacterium "Gram-negative Coccus".
2. The reason why pork glows at night is caused by the contamination of luminescent bacteria after slaughter. The researchers isolated a strain of luminescent bacteria from contaminated pork and identified it through observation of morphological and cultural characteristics, biochemical characterization and gene sequence analysis. According to the conclusions of the study, this luminescent bacterium is gram-negative coccus, and the most suitable temperature for growth is 18-22 °C.
Generally only in saline-containing media.
indicates that the bacterium may be found in the ocean, but as long as the nutrient conditions are suitable, the bacterium can also grow well in a low-salt or salt-free state. , acute pathogenic test" showed that luminescent bacilli on mice.
There was no obvious pathogenicity, and none of the mice in the experimental group had an increase in body temperature and died, but under certain conditions, the luminescent bacteria could survive in the body.
In addition, the results of the study also showed that this luminescent bacterium is sensitive to streptomycin.
Sulfonamides, ciprofloxacin.
and other antimicrobial drug susceptibility; Neo-Gel, ethanol.
and other commonly used disinfectants can kill the bacteria.
3. The relevant person in charge of the Changsha Municipal Health Supervision Institute said that swill.
There are as many as 139 kinds of germs in the garbage, which can easily enter the pig body. In addition, food waste and detergents in the garbage dump contain heavy metals such as phosphorus, lead, mercury, and organic compounds, and after feeding these materials to pigs, harmful substances will accumulate in pig fat, muscle and other tissues.
Pigs fed with this swill must contain heavy metals such as phosphorus, lead, and mercury. After people eat such pork to a certain extent, it will lead to a decline in the immune function of the liver, kidneys and other systems, causing diseases.
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I bought a piece of meat at the Yuegezhuang Market in Beijing and found that there was blue light after marinating it at home, but I really didn't find that the relevant departments gave a clear explanation, whether there was a problem and could I eat it.
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1. It is not recommended to eat glowing pork, first of all, people need to bear certain psychological pressure to eat glowing pork; Secondly, although the luminescent protein itself is not very harmful to the human body, the luminescent bacillus will be quickly killed when heated to a certain extent.
2. Because the pork glows, indicating that it is contaminated during transportation, storage and sales, then there may be a huge risk of other unknown bacteria in this process, so if you find these glowing pork, please do not eat it.
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1 Pork luminescence is due to contamination of a type of bacteria that can emit light, Pseudomonas fluoresceum. The fluorescence of pork is emitted by their metabolites. Pork can be contaminated during transportation, sale, and processing and become infected with these bacteria.
2 shiny meat can be eaten. Studies have shown that this luminescent protein is not harmful to the human body, and this type of bacteria will be killed when heated to 70, and there has been no case of illness caused by eating luminescent pork.
3 It is better not to eat shiny meat. Luminescent bacillus is originally a miscellaneous bacteria in the environment, and its appearance also suggests that pork may be contaminated with other bacteria during storage or transportation, and eating unclean pork may cause people to have abdominal pain, diarrhea and other uncomfortable symptoms.
4. Pork fed with phosphorus does not shine. Some people speculate that pork glows because of eating phosphorus-containing feed, but experiments have shown that pork does not emit phosphorescence when the phosphorus content added to pig feed reaches a toxic dose. Therefore, the pork fed by the general production method will not shine even more.
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Pork is a kind of meat that we often eat, it should be said that we eat the most pork among the meat, basically someone may eat it every day, recently someone on the market found that there is a glowing pork, which makes buyers a little worried about whether it is harmful to the human body, what is the reason for the glow of pork? What's the deal with glowing pork?
1. Phosphorus exceeds the standard
Pork light at night may be due to the excessive consumption of phosphorus-containing feed during the feeding process, resulting in a serious excess of phosphorus in pork, so that raw pork will emit a glow like fireflies in a dark environment.
2. Bacterial infection
In nature, there are many bacteria that can also emit bright light in the natural environment, this luminous bacillus is widely present in the ocean, if the meat and fish bought back are infected by this luminous bacillus, this kind of bacteria multiplies and breeds in the meat, and its metabolites contain fluorescent components, in this case, in the dark environment, the meat will also emit light.
3. Can you still eat pork glowing?
It is not recommended to eat glowing pork. First of all, people need to bear a certain amount of psychological pressure when eating glowing pork; Secondly, although the luminescent protein itself is not very harmful to the human body, the luminescent bacillus will be quickly killed when heated to a certain extent. However, due to the luminescence of pork, which indicates that it was contaminated during transportation, storage, and sales, there may be a huge risk of other unknown bacteria in this process, so if you find these glowing pork, please do not eat it.
4. What should I do if I buy glowing pork?
If it is found that the luminous pork is purchased, it must not be edible, and respond to the relevant departments such as the food and drug administration or the consumer protection association in a timely manner to assist the relevant departments to investigate the situation in time and block the continued circulation of such pork in the market.
5. How to buy pork
(1) Observe the skin of the meat
Pork from healthy pigs should not have any spots on the skin. Late plexus zone.
(2) Smell the smell
The smell of fresh and healthy pork is fresh meat with a slightly fishy smell. There will be no other odors and foul smells.
(3) Observe the lymph nodes
Healthy pork should have normal lymph nodes in size and number, and the color of the lymph node cross-section should be pale yellow or grayish.
(4) Look at elasticity
Under normal circumstances, the elasticity of fresh pork is relatively good, and the pits created by finger pressing will spring back quickly, while the elasticity of sick pigs and stale pork will decrease.
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