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Paper Sensor to detect freshness of Milk
January 4 , 2019
2152 days
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- The Scientists at IIT - Guwahati, have developed a simple paper kit that can test freshness of milk and tell how well it has been pasteurized.
- Aided with a smart phone app, the kit can help to ensure that the milk is consumed before it turns too sour.
- Using the kit, it takes just 15 minutes to detect ‘raw’ milk from pasteurized milk.
- A milk enzyme, Alkaline Phosphatase (ALP), is considered to be an indicator of milk quality.
- The scientists have used an ordinary filter paper to prepare the detector, which was impregnated with chemical probes that preferentially react with ALP resulting in colour change.
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