DefinePK

Abstract

Contamination of food by heavy metals and radionuclides is the main problem of food safety. Developing the methods of reducing the toxic elements in milk products can be relevant and topical issue. One of such methods is milk pasteurization. The laboratory pasteurization equipment which consists of three sections: pasteurization section, holder and cooler is developed. Milk is pasteurized at temperature range from 74 - 76 慢, 80 - 82 慢, 86 - 88 慢, 92 - 94 慢, 98 - 100 慢 for 0 to 60 s. An optimal pasteurization regime for decreasing the toxic elements content is determined: temperature of pasteurization - 78 C, optimal holding time in pasteurization equipment for zinc ions - 55 s, for cadmium ions - 54 s, for lead ions - 52 s, for copper ions - 50 s, for cesium ions - 52 s, for americium ions - 51 s. As a result, the zinc content decreased by 2.2%, cadmium content - by 4%, lead content - by 6%, copper content - by 12%, cesium content (137Cs) - by 1.05% and americium (241Am) - 0.8%.