New technology speeds up bacterial testing in food

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It is said that there is waste in haste, but researchers from Osaka Metropolitan University have proven that doing things rapidly does not necessarily mean working ineffectively. A research group led by Professor Hiroshi Shiigi at the Graduate School of Engineering, Osaka Metropolitan University has developed a technology that can rapidly and accurately determine the number of viable bacteria in food products electrochemically, using tetrazolium salt (MTT), a water-soluble molecule.

One of the most important assessment indicators for ensuring that food is free from contamination is the number of viable bacteria. However, conventional measurement methods take up to two days to yield results, and these results are only available after the food has been shipped from the factory—leading to potentially fatal consequences.

"With this method, we can quickly measure the number of viable bacteria, allowing us to confirm the safety of

 

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