Health

Watch | How a micro-needle detects contamination in packaged food

MIT's new food sensor can now pierce through food packages and detect signs of spoilage or contamination. The velcro-like sensor is made with silk micro-needles that can scan through plastic package, Massachusetts Institute of Technology (MIT) said in a statement.

The micro-needles are designed to draw fluid back into the sensor, which is printed with two types of specialised ink called bio-inks. The ink changes colour when in contact with fluid of a certain pH range, indicating that the food has spoiled. It can also turn colour when it senses contaminating bacteria.

Printable version | Oct 29, 2020 11:19:39 AM | https://www.thehindu.com/sci-tech/health/watch-how-a-micro-needle-detects-contamination-in-packaged-food/article32668304.ece

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