2024 Author: Jasmine Walkman | [email protected]. Last modified: 2023-12-16 08:29
Have you ever had food poisoning? If not, consider yourself lucky. Each year, approximately 50 million people have this problem in the United States alone. The annual number of deaths after salmonella poisoning is close to a million. The number of food poisoning in Britain is about 500 thousand.
To put an end to this problem, a group of Korean scientists are developing a special laser technology that detects dangerous bacteria in food. They intend to install it in a new generation of refrigerators, which will significantly reduce the number of food poisoning.
In most cases of food poisoning, food is contaminated with bacteria such as salmonella and Escherichia coli (E. coli). Finding ways to prevent the spread of these microorganisms has been an important goal for the food industry for years. However, this is extremely difficult. Bacteria are usually found when it is too late, by trained specialists in the laboratory.
Fortunately, Dr. Yong Hee Yuon and his team at the Institute of Science and Technology in South Korea have found a quick and inexpensive way to identify bacteria on the surface of food that takes just a few seconds. Soon their technology can be used by the food industry and installed on home refrigerators.
Bacteria such as salmonella have whip-like growths that protrude from the cell and that they use to move through surfaces. It is this movement on the surface that infects food, says Dr. Yuon.
The new technology is able to instantly pass the laser on the surface of food to determine whether there are living organisms on it and, more importantly, whether they are moving. This is done by taking about 30 photos in a matter of seconds while the laser illuminates the food.
Then he goes a second time and shoots again. Special software is used to compare at the microbiological level, and if there is a difference, it means that the food is spoiled.
South Korean scientists hope their technology will be used in the next few years.
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