A microbiologist recently released a video revealing the large number of bacteria hidden in take-out pizza after being left out for the next day. The results are shocking. According to the Daily Mail, Nicholas Aicher, a food quality control analyst in Chicago, posted a video of a half-cheese, half-salami-flavored take-out pizza. In order to observe the bacterial growth on the pizza just after purchase and one day after being left, he collected samples with cotton swabs and placed them in a petri dish for observation.

After a period of incubation, Ai Xue found that the petri dish where fresh cheese slices were sampled was "clean and flawless", but the petri dish where fresh sausage slices were sampled showed significant bacterial growth. When he examined the petri dishes sampled from overnight pizza, the cheese slices showed visible bacterial colonies in the petri dishes, while the sausage slices had fewer bacteria than the fresh samples, leaving him unable to explain why. Ai Xue said that he conducted this experiment to let people understand the invisible bacterial world in daily life. "Such bacterial growth actually happens around us every day."

●Video source: TikTok＠howdirtyis

This video has been viewed more than 13,000 times. Although the experimental results are unappetizing, netizens are still unmoved. In the comment area of ​​the video, someone said bluntly, "I will still eat it." Some netizens pointed out that the high salt content of sausage may inhibit the growth of bacteria. Another person commented: "Is the sausage fat making the bacteria grow more? How? But I will still eat day-old pizza." Although the video was surprising to many viewers, it did not seem to have shaken the commenter's love for take-out pizza.

The report also mentioned that Ai Xue had previously tested the "5-second rule" to verify whether food dropped on the ground is still safe to eat if picked up within 5 seconds. In the video, which has accumulated more than a million views, he experimented with the bacterial growth of food dropped on the floor of his house and "dwelled for different seconds" before being picked up, including 1 second, 5 seconds, 10 seconds, 20 seconds, 30 seconds and 1 minute. However, he did not collect food directly. Instead, he placed the petri dish upside down on the ground for the same period of time, then picked it up and placed it for observation. The results showed that all samples had varying degrees of bacterial growth; the bacterial counts at 1 second and 5 seconds were almost the same, covering the petri dish, overturning the statement that "it is safe to eat if picked up within 5 seconds." Ai Xue finally said that whether the food is left on the ground for 5 seconds or 60 seconds, "it is still disgusting."

●Video source: TikTok＠howdirtyis