The influence of Opisthorchis felineus on the nutritional quality and processing factors of fish meat
Tolepova G. Zhumageldiyev A. Abdybekova A. Miciński J. Ussenbayev A. Witkowska-Dąbrowska M. Sobotka W.
2024Polish Society Magnesium Research
Journal of Elementology
2024#2024Issue 173 - 85 pp.
The aim of this study was to assess the influence of Opisthorchis felineus infection on the nutritional quality and processing factors of fish meat, and to determine the resistance of O. felineus metacercariae colonizing fish muscles to various meat processing methods. The prevalence and severity of O. felineus infection were evaluated in three economically important fish species: Abramis brama (Linneus, 1758), Carassius auratus (Linneus, 1758), and Leuciscus idus (Linneus 1758). The fish came from the Birtaban- -Shalkar lakes in the Akmola region of Kazakhstan. The microbiological quality of fish meat was evaluated using conventional methods based on the results of sensory analysis (n=34), analysis of proximate chemical composition, counts of mesophilic aerobic and facultative anaerobic microorganisms (CMAFAnM), coliforms, Salmonella spp., Listeria monocytogenes, and heavy metal concentrations (Pb, Hg, Cd, Cu, Fe, Zn, Mn, Ni, and Co) in the meat of infected and non-infected fish. Metacercariae were resistant to various meat processing methods. Opisthorchis felineus metacercariae were identified in all analyzed fish species. The meat of infected and control fish differed in proximate chemical composition. The content of heavy metals did not exceed maximum permissible limits. In comparison with non-infected fish, the meat of infected fish was characterized by a higher content of Fe (by 1.7%) and Zn (by 12.9%) and a lower content of Ni (by 5.5%), Cu (12.5%), Co (by 43.8%), Mn (by 59%), and Pb (by 37.3%). The content of Ca and Hg in fish meat was similar in both groups. Freezing, thermal processing, and salting destroyed 100% of O. felineus metacercariae in fish. Drying without pre-freezing was the only processing method that did not eliminate liver fluke larvae from fish meat.
fish meat , infection , metacercariae , Opisthorchis felineus , technological processing
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Department of Veterinary Sanitary Expertise and Hygiene, Kazakh National Agrarian Research University in Almaty, Almaty, Kazakhstan
Department of Public Health Protection, Kazakh Research Scientific Veterinary Institute, Almaty, Kazakhstan
Department of Sheep and Goat Breeding, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
Department of Veterinary Medicine, Seifullin Kazakh Agrotechnical University, Astana, Kazakhstan
Department of Economy’s Competitiveness, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
Department of Animal Nutrition, Feed Science and Cattle Breeding, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
Department of Veterinary Sanitary Expertise and Hygiene
Department of Public Health Protection
Department of Sheep and Goat Breeding
Department of Veterinary Medicine
Department of Economy’s Competitiveness
Department of Animal Nutrition
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