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ON THE ISSUE OF ESTABLISHING ACCEPTABLE DAILY INTAKE OF CHEMICAL SUBSTANCESIN FOOD PRODUCTS ACCORDING TO HEALTH RISK CRITERIA


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Abstract

Hygienic standards for chemical admixtures contents in food products in the Eurasian Economic Union countries are an integral part of the technical regulations adopted in the Customs Union and the EEU. However, not all of them have been substantiated by the moment in relation to acceptable consumers’ health risk. The aim of this research is to discuss fundamentals for fixing acceptable daily intake (ADI) for chemical substances in food according to human health risk criteria. We analyzed problems related to fixing hygienic standards for chemical substances in food advisable in the process to apply data obtained in previous research and published in relevant literature sources. When choosing points of the establishment for fixing ADI or provisional tolerable intake (PTI) in a situation when data on several different starting points are available, one should choose such parameters that require the application of fewer modifying factors, namely reference levels (BMD) detected as for epidemiologic research results for the most sensitive population groups. It is advisable to supplement a set of mathematic modeling techniques applied for fixing hygienic standards for chemical admixtures content in food products with evolution modeling of health risk that can be applied to verify suggested values. When fixing ADI, one should primarily apply such modifying factors as those that allow for interspecies extrapolation, points of establishment for ADI/PTI, and extrapolation of research results under short-term exposure onto persistent exposure scenarios. The suggested recommendations for substantiation of modifying factors will allow unifying their application to a certain extent when calculating ADI/PTI of chemicals. Before any permissible risk levels are fixed in a process of hygienic standard development, it is advisable to apply the following permissible health risk level: for quantitative assessment, lifelong risk of a severe disease or death being equal to 1∙10-4; for semi-quantitative risk characteristics, hazard quotient equal to 1; for risk evolution analysis, reduced health risk index equal to 0.05.


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