Researchers have developed a three-dimensional (3D) paper-based portable device that can detect adulteration in milk within 30 seconds.

The test can be simply performed at home and is capable of detecting various adulterating agents such as urea, detergents, soap, starch, hydrogen peroxide, sodium-hydrogen-carbonate, and salt.

Only a millimeter of liquid shall suffice for the test. The test can detect adulteration not only in milk but in other liquids such as water, fresh juices, and milkshakes.

Thus, research has been conducted by the Indian Institute of Technology of Madras. The 3D paper-based microfluidic device is made up of a top and bottom cover and a sandwich structure middle layer and works well for infiltrating denser liquids at a consistent speed.

The paper is treated with various reagents and is kept for drying. Both paper layers are adhered to both sides of the support after drying, and the covers adhere with double-sided tape.

Whatman filter paper grade 4 is used in this design which aids liquid flow and allows for the storage of more reagents.

This new technology is affordable, unlike the lab-based tests which are both time-taking and expensive. The adulteration of milk is becoming a serious problem in developing countries such as India, Pakistan, China, and Brazil. Consumption of adulterated milk cause medical complications such as kidney problems, infant death, gastrointestinal complications, diarrhea, and even cancer.

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Reference:

• outlookindia.com