Anshika Agarwal, a research scholar of the Department of Biotechnology at IIT M (Indian Institute of Technology Madras), has come up with a device that will detect if milk is spoilt. The research for this was inspired by the Supreme Court�s concern about bad milk being sold in the market.
�(I) started to work a year ago to solve the problem as part of (my) Ph. D. research. Milk often gets spoilt before the expiry date printed on the sachet. Keeping this in mind, I developed a sensor which is sensitive enough to dete�ct milk spoilage at an ea�rly stag�e�The m�e��mb��rane (sensor) would be pri�n�ted on the external wall conne�cted by a small pie�ce of sensor, which wo�u�l�d se�n��se the quality of milk and change the membrane�s colour in the sachet. My sensor is cost-effective and easy to incorporate in packaging system. Prof T.S. Ch�andra of the Biotec�h��nolo�gy department and Prof T.S. Natarajan from the Phy�sics department have helped me a lot in developing this membran�e��, said Ms. Agarwal.