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June 13, 2019 Thursday 03:57:17 PM IST

IIT Guwahati Develops Simple Technique to Check Milk Quality

Science Innovations

IIT Guwahati has developed a simple technique to check the quality of milk and to know whether it was pasteurised as per standards.
The paper based detection system finds out the quantity of Alkaline phosphatase, a protein found in high concentrations in raw milk but will not be there in pasteurised milk. The protein changes into a blue green precipitate when it comes in touch with a sensor probe designed by IIT.
The coin shaped prototype of the sensor consists of a paper disc, chemically treated and has alkaline phosphatase antibody attached to it. It is then placed on a cellulose acetate transparent film. A ring enclosing it serveas as the area where the biochemical reaction happens, and also provides mechanical strength to the whole assembly. This easy to use detection kit can estimate the alkaline phosphate in raw milk. The estimated cost of making the biosensors is Rs 70 to 110.




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