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Article

Heavy Metal Levels in Milk and Cheese Produced in the Kvemo Kartli Region, Georgia

1
Specialized Partnership in Sustainable Food Systems and Food Sovereignty, Faculty of Organic Agricultural Sciences, University of Kassel, 37213 Witzenhausen, Germany
2
School of Agricultural and Natural Sciences, Agricultural University of Georgia, Tbilisi 0159, Georgia
3
Scientific-Research Centre of Agriculture, Ministry of Environmental Protection and Agriculture of Georgia, Tbilisi 0159, Georgia
*
Author to whom correspondence should be addressed.
Academic Editor: Masashi Ando
Foods 2021, 10(9), 2234; https://doi.org/10.3390/foods10092234
Received: 17 August 2021 / Revised: 14 September 2021 / Accepted: 17 September 2021 / Published: 21 September 2021
(This article belongs to the Section Dairy)
Milk and dairy products are among the most important food sectors in Georgia, and milk is considered one of the most essential foods in the human diet according to Georgian food culture. Kvemo Kartli is one of the major regions in Georgia for milk production. This region suffers from heavy metal contamination in soil and water because of the mining industry. This study was conducted to determine the concentrations of cadmium, lead, iron, zinc, copper, chromium, manganese, cobalt, nickel, selenium and molybdenum in milk and cheese and to evaluate whether the concentrations of these elements correspond to the permissible levels of toxic elements in milk and cheese for Georgia and the EU. In total, 195 milk samples and 25 cheese samples (16 from Imeruli cheese and nine from Sulguni cheese) were collected from nine different villages in the Kvemo Kartli region in Georgia: Chapala, Vanati, Bolnisi, Mtskneti, Sabereti, Ratevani, Khidiskuri, Kazreti, Kvemo Bolnisi. The determination of heavy metal in all samples was carried out by inductively coupled plasma-mass spectrometry. The research results show that the concentration of these elements in most milk samples is fairly constant for all villages and is less than the permissible levels, except for seven samples from the following villages: Kvemo Bolnisi, Bolnisi, Mitskineti and Ratawani, where the concentration of lead in the milk samples was higher than the permissible limits mentioned in the literature, ranging from 0.027 to 1003 mg L−1. As for copper, its concentration in milk in Sabereti and Vanati villages was above the permissible limits according to the EU limit, ranging from 0.42 to 1.28 mg L−1. For cheese samples, the concentration of cadmium, lead, copper, Co and Ni in the two types of cheese was less than the permissible limit according to the laws of Georgia. Finally, the heavy metal concentrations in Imeruli and Sulguni cheese for manganese (Mn), chromium (Cr), selenium (Se), molybdenum (Mo) zinc (Zn) and iron (Fe) were above the permissible limit. Thus, the study results showed that the consumption of milk does not pose a direct and serious threat to the health of consumers. As for the two types of cheese, future studies and continuous monitoring are necessary to assess the cheese content of trace elements and the risk of its consumption to the consumer. View Full-Text
Keywords: heavy metal; milk; cheese; Georgia heavy metal; milk; cheese; Georgia
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MDPI and ACS Style

Al Sidawi, R.; Ghambashidze, G.; Urushadze, T.; Ploeger, A. Heavy Metal Levels in Milk and Cheese Produced in the Kvemo Kartli Region, Georgia. Foods 2021, 10, 2234. https://doi.org/10.3390/foods10092234

AMA Style

Al Sidawi R, Ghambashidze G, Urushadze T, Ploeger A. Heavy Metal Levels in Milk and Cheese Produced in the Kvemo Kartli Region, Georgia. Foods. 2021; 10(9):2234. https://doi.org/10.3390/foods10092234

Chicago/Turabian Style

Al Sidawi, Rami, Giorgi Ghambashidze, Teo Urushadze, and Angelika Ploeger. 2021. "Heavy Metal Levels in Milk and Cheese Produced in the Kvemo Kartli Region, Georgia" Foods 10, no. 9: 2234. https://doi.org/10.3390/foods10092234

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