CSIR: Central Scientific Instruments Organization (CSIO)

Updated: Oct 11, 2020


Gavin Sethi

Biotech 3rd yr

Student of UIET, Panjab University

I pursued my 6 weeks training at CSIO, Sector 30-C Chandigarh under the guidance of Dr. Inderpreet Kaur, Senior Scientist at CSIR-CSIO and Mr. Sukhbir Singh, Ph.D. Scholar.

Adulteration is a global problem, especially with edibles. They are mixed with unhygienic materials for making more profit. Milk is one of the essential nutrients for human consumption as well as for creating dairy products. As milk is required in large numbers, milk sellers either add water or make synthetic milk. However, the addition of water dilutes milk resulting in a decrease in specific gravity thus milk adulteration is adopted by them.

I was assigned to create a visually evaluable dry reagent strip for estimation of urea in adulterated milk. It was based on (i) urease reacting with urea to liberate ammonia and carbon dioxide and (ii) liberated ammonia reacting with a specific chromogen to change the color of the strip, visible with naked eyes. The change depends on the concentration of urea present in the sample.

The experience of working in CSIO as a trainee was really great.

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