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J. Csapó, G. Holló, I. Holló, R. V. Salamon, Sz. Salamon, Sz. Toró and Zs. Csapóné Kiss

Abstract

Until the middle of the last century, selenium was considered to be toxic, but recently it turned out to be a micronutrient with important physiological effects, whose lack impedes the functioning of several enzymes, while in the case of a prolonged deficiency, disease processes can also occur in the body. Hungary belongs to the selenium-deficient regions in Europe; therefore, our aim was to contribute to the improvement of selenium supply of the population through increasing the selenium content of milk and dairy products. A daily supplementation of 1-6 mg organic selenium to the feed of dairy cows increases the selenium content of milk from the value of 18 μg/kg to 94 μg/kg in 8 weeks, decreasing again to the initial value in 6 weeks after stopping the supplementation.

After producing various products from the control milk (18 μg/kg selenium content) and the selenium-enriched milk (53 μg/kg) obtained from dairy cattle fed on a feed supplemented with 2 mg selenium/day, we concluded that the selenium content of selenium-enriched milk compared to the products produced from the control milk increased from the value of 18.6 to 58.5 μg/kg in the case of yogurt, from 66.0 to 138.1 μg/kg in the case of telemea, from 80.8 to 163.7 μg/kg in the case of orda (urdă) and from 88.6 to 200.0 μg/kg in the case of semi-hard cheese obtained by mixed-coagulation. The selenium content of whey also increased significantly (from 8.8-9.7 μg/kg to 20.1-25.8 μg/kg), which could also be used as a food for people or feed for animals. According to our calculations, the selenium requirements of the developing organism could be satisfied by the consumption of 2-3 dl selenium-enriched milk until the age of 8 and with 4-6 dl selenium-enriched milk until the age of 20.

Open access

Milan Jocković, Petar Čanak, Vladimir Miklič, Jelena Ovuka, Velimir Radić, Siniša Jocić, Sandra Cvejić and Ana Marjanović-Jeromela

., FALLAH, S., TADAYYON, A.: Seed priming improves seed germination and reduces oxidative stress in black cumin ( Nigella sativa ) in presence of cadmium. Industrial Crops and Products, 79, 195-204, 2016. FRANČÁKOVÁ, H., LÍŠKOVÁ, M.: Dormancy of malting barley in relation to physiological parameters of barley grain. Acta Fytotechnica et Zootechnica, 12, 20–23, 2009. GHASEMI, E., GOODARZIAN-GHAHFAROKHI, M., DARVISHI, B., HEIDARI-KAZAFI, Z.: The effect of hydro-priming on germination characteristics, seedling growth and antioxidant activity of accelerated aging