STUDY OF HEAVY METAL AND RADIONUCLIDE CONTENT IN MEAT RAW MATERIALS DEPENDING ON THE TYPE OF THERMAL PROCESSING

The article presents the results of the assessment of heavy metal and radionuclide content in lamb depending on the type of thermal processing. The object of the study was lamb muscle tissue subjected to boiling, frying, and stewing under conditions typical for culinary practice. The concentrations of lead (Pb), cadmium (Cd), arsenic (As), as well as radionuclides cesium-137 (Cs-137) and strontium-90 (Sr90), were determined using instrumental analytical methods after acid digestion and radiometric measurements. It was established that the initial content of toxic and radioactive elements in raw lamb did not exceed the maximum permissible concentrations regulated by sanitary and hygienic standards. The results showed that thermal processing significantly affects the redistribution and relative concentration of contaminants in the finished product. Boiling resulted in a pronounced decrease in heavy metal content (Pb by 58.6%, Cd by 56.7%, As by 18.2%) and radionuclide activity (Cs-137 by 69.8%, Sr-90 by 40.0%) due to their partial migration into the cooking broth. Frying led to a relative increase in the concentration of several elements, particularly Pb and Sr-90, as a result of moisture loss and product mass reduction, while stewing demonstrated intermediate effects. The obtained results confirm the necessity of considering the method of thermal processing when assessing lamb food safety and substantiate boiling as the most preferable method for minimizing toxic and radioactive element intake.

1. Zhubanov D.E. Pishchevaya i biologicheskaya tsennost’ myasnykh produktov / D.E. Zhubanov, M.Ch. Tultabaev // Vestnik nauki. – 2025. – № 1(82). https://cyberleninka.ru/article/n/pischevaya-ibiologicheskaya-tsennost-myasnyh-produktov.

2. Makhnichenko A.S. Vliyanie tyazhelykh metallov na organizm cheloveka / A.S. Makhnichenko, A.E. Pashchenko // Science Time. – 2016. – № 2(26). https://cyberleninka.ru/article/n/vliyanietyazhelyh-metallov-na-organizm-cheloveka.

3. Berezin I.I. Vliyanie soderzhaniya solei tyazhelykh metallov v produktakh pitaniya na zdorov’e naseleniya / I.I. Berezin, O.V. Sazonova // Obrazovatel’nyi vestnik «Soznanie». – 2008. – № 3. https://cyberleninka.ru/article/n/vliyanie-soderzhaniya-soley-tyazhelyh-metallov-v-produktahpitaniya-na-zdorovie-naseleniya.

4. Gleba O.V. Ekologicheskie problemy zhivotnovodcheskoi otrasli / O.V. Gleba // Agrarnoe i zemel’noe pravo. – 2019. – № 7(175). https://cyberleninka.ru/article/n/ekologicheskie-problemyzhivotnovodcheskoy-otrasli.

5. Investigation of the food safety of lamb meat obtained in ecologically unfavorable territories / Z. Apsalikova et al // Frontiers in Sustainable Food Systems. – 2024. – Vol. 8. https://doi.org/10.3389/fsufs.2024.1368206.

6. Codex Alimentarius Commission. General Standard for Contaminants and Toxins in Food and Feed (CODEX STAN 193–1995). Rome: FAO/WHO, 1995.

7. EFSA Panel on Contaminants in the Food Chain (CONTAM). Scientific Opinion on the risk for public health related to the presence of lead in food // EFSA Journal. – 2010. – Vol. 8, № 4. – Art. 1570. https://doi.org/10.2903/j.efsa.2010.1570.

8. GOST 33824-2016. Produkty pishchevye i prodovol’stvennoe syr’e. Inversionnovol’tamperometricheskii metod opredeleniya soderzhaniya toksichnykh elementov (kadmii, svinets, med’ i tsink). Moscow: Standartinform, 2016. https://internet-law.ru/gosts/gost/62938/ (accessed: 05.01.2026).

9. GOST 31628-2012. Produkty pishchevye i prodovol’stvennoe syr’e. Inversionnovol’tamperometricheskii metod opredeleniya massovoi kontsentratsii mysh’yaka. Moscow: Standartinform, 2012. https://internet-law.ru/gosts/gost/52594/ (accessed: 05.01.2026).

10. GOST 32161-2013. Produkty pishchevye. Metod opredeleniya soderzhaniya tseziya Cs-137. Moscow: Standartinform, 2013. https://files.stroyinf.ru/Index2/1/4293777/4293777880.html (accessed: 05.01.2026).

11. FAO/WHO. Evaluation of certain contaminants in food. Geneva: WHO Press, 2011.

12. WHO. Heavy metals in food: exposure and health effects. Geneva: World Health Organization, 2020.

13. Commission Regulation (EU) 2023/915. Setting maximum levels for certain contaminants in foodstuffs // Official Journal of the European Union. 2023.

14. Sobhanardakani S. Effect of cooking process on heavy metal content of meat / S. Sobhanardakani // Food Chemistry. – 2018. – Vol. 249. – P. 117-121.

15. Demirezen D. Comparative study of trace elements in certain fish, meat and meat products / D. Demirezen, K. Uruc // Meat Science. – 2006. – Vol. 74. – P. 255-260.