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Caesium-137 in the muscles of game animals in 2015-2022 – levels and time trend النص الكامل
2024
Czerski Paweł | Gembal Magdalena | Warenik-Bany Małgorzata
Radioactive caesium-137 occurring in the environment may be taken up by plants and animals and pose a trophic threat to humans. Game animals living in forest ecosystems are very good bioindicators of the level of environmental contamination by ionising radiation. The main species measurably exposed to caesium-137 are the wild boar (Sus scrofa), the roe deer (Capreolus capreolus), and the red deer (Cervus elaphus). The study determined the levels of Cs-137 in muscle samples of these game animals in 2015–2022.
اظهر المزيد [+] اقل [-]Levels of caesium-137 in food of animal origin in Poland النص الكامل
2023
Gembal Magdalena | Czerski Paweł | Milczarczyk Ewelina | Warenik-Bany Małgorzata
Radioactive contamination of the environment is one of the greatest threats after a nuclear accident due to released radionuclides. From a radiotoxicological point of view, the most important radionuclide is caesium-137. Formed mainly during nuclear explosions, caesium-137 can persist in the soil for many years, from where it constantly enters the food chain. One of the elements of ensuring food safety is the monitoring of its radioactive contamination, mainly with radioactive caesium isotopes. The aim of the study was to determine the content of caesium-137 in food of animal origin.
اظهر المزيد [+] اقل [-]Epidemiology and antibiogram of Riemerella anatipestifer isolated from waterfowl slaughterhouses in Taiwan النص الكامل
2019
Chang, Fei-Fei | Chen, Chang-Chieh | Wang, Shao-Hung | Chen, Chiou-Lin
Epidemiology and antibiogram of Riemerella anatipestifer isolated from waterfowl slaughterhouses in Taiwan النص الكامل
2019
Chang, Fei-Fei | Chen, Chang-Chieh | Wang, Shao-Hung | Chen, Chiou-Lin
Introduction: Laryngeal swab samples collected from three waterfowl slaughterhouses in central Taiwan were cultured and suspected isolates of Riemerella anatipestifer were identified by API 20NE and 16S rDNA PCR. Material and Methods: Serum agglutination was used for serotyping, and antimicrobial susceptibility was tested. Results: Seventy-six R. anatipestifer isolates were detected, and the prevalences in the ducks and geese were 12.3% (46/375) and 8.0% (30/375), respectively. The positive isolation rates were 65.6% for all arriving waterfowl, 76.0% for birds in the holding area, 1.6% for defeathered carcasses, but zero for degummed carcasses. A PCR examination detected R. anatipestifer in the slaughtering area frequently. Serotype B was dominant in both duck (34.8%) and goose (46.7%) isolates, but the wide serotype distribution may very well impede vaccination development. All isolates were resistant to colistin, and 79.7% were resistant to more than three common antibiotics. Conclusion: The results proved that most ducks had encountered antibiotic-resistant R. anatipestifer in rearing, which suggests that the bacterium circulates in asymptomatic waterfowl. It is worth noting that most waterfowl farms were found to harbour R. anatipestifer, and contaminated slaughterhouses are a major risk factor in its spread. Effective prevention and containment measures should be established there to interrupt the transmission chain of R. anatipestifer.
اظهر المزيد [+] اقل [-]Epidemiology and antibiogram of Riemerella anatipestifer isolated from waterfowl slaughterhouses in Taiwan النص الكامل
2019
Chang Fei-Fei | Chen Chang-Chieh | Wang Shao-Hung | Chen Chiou-Lin
Introduction: Laryngeal swab samples collected from three waterfowl slaughterhouses in central Taiwan were cultured and suspected isolates of Riemerella anatipestifer were identified by API 20NE and 16S rDNA PCR.
اظهر المزيد [+] اقل [-]Ready-to-eat meat products as a source of Listeria monocytogenes النص الكامل
2018
Kurpas, Monika | Wieczorek, Kinga | Osek, Jacek
Ready-to-eat meat products as a source of Listeria monocytogenes النص الكامل
2018
Kurpas, Monika | Wieczorek, Kinga | Osek, Jacek
In 2015 in the European Union member states listeriosis caused 270 deaths. Food is the route of transmission in 99% of all human infection cases. Several studies from different countries have shown that the presence of Listeria monocytogenes in food can be as high as 58.3%. One of the most important ways to protect food from these microorganisms is to prevent the spread of the bacteria at processing plants at different stages of food production chain. The ability of L. monocytogenes to survive in extreme conditions and to form biofilms on various surfaces is a significant challenge for food safety. Removal of these bacteria from niches in processing plants is difficult and requires the use of sanitisers and precise equipment cleaning. The presence of L. monocytogenes in processing environment at slaughterhouses, deli meat factories or in retail may be a reason of cross-contamination. Proper hygienic systems applied by workers in food preparing places and knowledge about different routes of spreading of these bacteria may effectively decrease the risk of food contamination. Standardised legal regulations and control of meat product manufacture should be a fundamental way to protect food from L. monocytogenes contamination.
اظهر المزيد [+] اقل [-]Ready-to-eat meat products as a source of Listeria monocytogenes النص الكامل
2018
Kurpas Monika | Wieczorek Kinga | Osek Jacek
In 2015 in the European Union member states listeriosis caused 270 deaths. Food is the route of transmission in 99% of all human infection cases. Several studies from different countries have shown that the presence of Listeria monocytogenes in food can be as high as 58.3%. One of the most important ways to protect food from these microorganisms is to prevent the spread of the bacteria at processing plants at different stages of food production chain. The ability of L. monocytogenes to survive in extreme conditions and to form biofilms on various surfaces is a significant challenge for food safety. Removal of these bacteria from niches in processing plants is difficult and requires the use of sanitisers and precise equipment cleaning. The presence of L. monocytogenes in processing environment at slaughterhouses, deli meat factories or in retail may be a reason of cross-contamination. Proper hygienic systems applied by workers in food preparing places and knowledge about different routes of spreading of these bacteria may effectively decrease the risk of food contamination. Standardised legal regulations and control of meat product manufacture should be a fundamental way to protect food from L. monocytogenes contamination.
اظهر المزيد [+] اقل [-]Bacterial microbiome diversity along poultry slaughtering lines: insights from chicken carcasses and environmental sources النص الكامل
2024
Telli Arife Ezgi | Biçer Yusuf | Telli Nihat | Sönmez Gonca | Turkal Gamze | Güzel İsmail
This study aimed to determine the bacterial diversity of chicken carcasses and their surrounding environment at various stages along a poultry slaughter line.
اظهر المزيد [+] اقل [-]Bacterial Contamination of Mortadella in Three Palestinian Factories النص الكامل
2005
N. H. El-Nakhal
An investigation on certain bacterial contaminants of Mortadella produced by three Palestinian factories has been carried out. One sample (2units) was taken monthly (June/1999-may/2000) from each of three local factories (A, B&C). The lowest viable bacterial count recorded was 1x 103 CFU/g. in sample No. C1, while the highest count was 3x107 CFU/g. in sample No. B5. Some bacterial strains were isolated during the course of this study by using specific isolation media. They were identified and distributed as: Salmonella spp. (40%) (S. typhi, 6 strains, S. arizonae, 4 strains and S. infantis, 2 strains), Eschirichia spp. (50%) (E. coli, 8 strains and E. coli O157:H7, 7 strains), anaerobic Streptococcus parvulus (3.3%) (One strain) and Clostridum spp. (6.7%) (Cl. baratii, one strain and Cl. botulinum, 2 strains). Three samples (A1, C3 and B10) were mix contaminated; two pathogenic bacterial strains were isolated from each. All investigated samples were negative for Yersinia spp. and Campylobacter spp. The scientific and medical importance was discussed.
اظهر المزيد [+] اقل [-]Contamination of soils with Toxocara eggs in several playgrounds of Ipoh, Perak النص الكامل
2018
Erwanas A. I. | Zary S. | Nurulaini R. | Adnan M. | Debbra M. | Azizah D. | Azima Laili H.
Toxocariasis is an important cosmopolitan zoonotic disease mainlycaused by Toxocara spp., a type of soil transmitted helminth (STH) on cats and dogs. In this study, 80 soil samples were taken from four public playgrounds and six neighbourhood playgrounds in Ipoh, Perak between October and December 2016 to determine the status of soil contamination with the eggs of Toxocara spp. Results showed that 32.5% from the total soil samples were positive with Toxocara spp. eggs. Overall, five out of ten of the sampling sites were contaminated with Toxocara spp. eggs. Besides that, the relationship between the soil condition and the occurrence of the Toxocara spp. eggs in soils were also investigated. The findings showed that increase of moisture and pH of the soils contributed to the increase of contaminationwith Toxocara spp. eggs. Sandy soils were found significantly contaminated with the eggs of Toxocara spp. compared to theother types of soil. Therefore, appropriate preventive measures such as treatment of soil, regular monitoring and deworming of dogs and cats as well as awareness programmes to the public are important.
اظهر المزيد [+] اقل [-]Trials for isolation of reticuloendotheliosis virus from commercial chicken flocks for using the isolates in the detection of extraneous virus contamination in live vaccines النص الكامل
2011
Badawi A. A. | Salama S. S. | Elham A. Elibiary
In an attempt to isolate reticuloendotheliosis virus (REV) from field cases, plasma of commercial broiler chickens-suspect to have virus infection-were examined. Samples were inoculated in chicken embryo fibroblasts and after proper incubation infected cultures were assayed for REV-antigen by ELISA, immuno-peroxidase (IP) plaque assay, and PCR.Specificity of ELISA and IP was evaluated by comparing their results with that obtained by PCR. REV could be isolated and virus antigen was detected in cell cultures by all three techniques. Results showed that PCR and ELISA are more specific than IP in detection of REV-antigen. However, the sensitivity of ELISA was affected by the criterion used for determination of the cut-off point. Further studies are needed for full characterization of the isolated virus by using reference antiserum or strain specific primers for PCR.
اظهر المزيد [+] اقل [-]