This kind is called fluorescent pork. Fluorescent pork, also known as luminous pork or blue pork, refers to pork that appears in many places in China in recent years and gives off a faint light at night.

The reason why pork glows at night is because pigs are contaminated by luminescent bacteria after slaughter. According to the research conclusion, this luminescent bacterium is Gram-negative coccidia, and the most suitable growth temperature is 18-22℃. Generally, this bacterium only grows on saline medium, suggesting that it may come from the ocean, but it can grow well in low-salt or salt-free state as long as the nutritional conditions are suitable.

Teacher Wang Hexiang from the Department of Microbiology of China Agricultural University pointed out that this kind of Pseudomonas fluorescens is easy to breed in some foods rich in protein, such as meat, meat products and eggs. In addition, this kind of bacteria also exists in our intestines.

Pseudomonas fluorescens will not cause pathogenic harm to human body, so consumers need not worry too much about it. To kill this kind of bacteria, just heat it. Under normal circumstances, the growth of Pseudomonas fluorescens will stop at 42 degrees Celsius, and when the temperature exceeds 70 degrees Celsius, the bacteria will be killed within a few seconds.