Nanotechnology Now - Press Release: Simple Detection of Toxic Compounds in Dairy Products

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Abstract:
Iranian researchers from Kharazmi University in association with researchers from Bu-Ali Sina University presented a cost-effective, simple and fast method for the measurement of toxic compounds in dairy products, specially milk.

Simple Detection of Toxic Compounds in Dairy Products

Tehran, Iran | Posted on October 6th, 2014

This method provides appropriate conditions for controlling the quality of products in various industries, including foodstuff industry, and it has applications in quality control organizations such as Food and Drug Organization, Veterinarian Organization and Standard Organization.

Aflatoxin M1 is one of the derivatives of one of the most poisonous materials in food products, which is aflatoxin B1. This compound appears in milk and dairy products, including dried milk, cheese, yogurt, etc. Aflatoxin M1 is very stable and it is not eliminated through heating processes such as pasteurization. The presence of this type of aflatoxin in milk and dairy products causes numerous diseases such as liver cancer.

Results of this research reduce costs, increase diagnosis rate, decrease the pollution caused by organic solvents, and help the measurement of the toxic compound in dairy products.

Modified iron oxide magnetic nanoparticles have been used as sorbent in this research since one of the objectives of the research was to eliminate expensive and disposable immunoaffinity columns and to create a fast, simple, and cheap method for the measurement of aflatoxin M1.

Iron oxide nanoparticles have very high ratio of surface to volume. Therefore, desirable separation can be obtained by using small amounts of the sorbent. In addition, fast desorption of the sorbent from the solution is available by using external magnet due to the relative super saturation properties of the particles. The combination of the two properties in this research has resulted in the achievement of a fast, simple and effective separation for the measurement of aflatoxin M1.

Results of the research have been published in Analytica Chimica Acta, vol. 842, issue 9, 2014, pp. 63-69.

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