Raman Seth

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Here, we report a simple and sensitive colorimetric method for detection of melamine in milk using gold nanoparticles (AuNPs). AuNPs of 21-nm size were synthesized by the citrate reduction method. The method is based on the principle that the melamine causes the aggregation of AuNPs and, hence, the wine red color of AuNPs changes to blue or purple. This(More)
Accepted: 29/06/2014 Abstract Phenolic compounds, ubiquitous in plants, are essential part of human diet. Major polyphenolic compounds found in plants are flavonoids, catechins, epigallocatechin-3-gallate (EGCG), flavonones, iso-flavones, flavanols, anthocyanins, phenolic acids, stilbenes, flavonoids, chalcones, lignans etc. These compounds are secondary(More)
Melamine is nitrogen rich chemical compound used as an adulterant in dairy products by unscrupulous people to increase the apparent protein content. This incident prompted the researchers to develop simple methods for easy detection of melamine in food samples. In the present paper, we report a simple and sensitive colorimetric method for detection of(More)
Oxidative rancidity in anhydrous cow milk fat leads to reduction in its shelf life. Use of synthetic antioxidants is prevalent in dairy industry to prevent the development of rancidity. Keeping in view the increasing demand for natural additives, the present study was carried out to explore the potential of lycopene as a natural antioxidant in anhydrous cow(More)
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