Listeria monocytogenes Contamination in Unpasteurized Traditional Cheese Products in Qazvin, Iran

Khedmati Morasa, Hajar and Mahmoudi, Razzagh and Ghajarbeygi, Peyman and Mosavi, Shaghayegh and Shahsavari, Saeed and Abbasi, Narges and Sarfalah, Neda (2019) Listeria monocytogenes Contamination in Unpasteurized Traditional Cheese Products in Qazvin, Iran. J Mazandaran Univ Med Sci, 29 (178). pp. 115-126. ISSN 1735-9279

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Background and purpose: Listeria monocytogenes is a foodborne pathogen and a pothential risk to public health. Listeriosis is one of the most serious infectious diseases in most developed countries . Consumption of raw milk and unpasteurized traditional dairy products such as cheese can be a major reason for listeriosis in humans. This reaserch aimed at investigating Listeria monocytogenes contamination in unpasteurized cheese products by using culture and Polymerase Chain Reaction (PCR) in Qazvin, Iran. Materials and methods: In this research, 128 samples of traditional cheese products were collected from different traditional shopping centers in Qazvin, between October 2017 and September 2018. They were transported to the laboratory under controlled conditions. All isolates were analysed to biochemical test. L. monocytogenes strains were further confirmed by PCR amplification. Results: Findings showed that 14 samples (10.9%) were contaminated with L. monocytogenes. The highest prevalence of L. monocytogenes was found in white cheese samples (7%). The highest rate of contamination was reported in spring and winter (3.1%). Conclusion: Listeria contamination in cheese samples studied can pose a serious risk to consumers of non-pasteurized dairy products. Therefore, food safety and health practitioners should apply effective methods and standards.

Item Type: Article
Subjects: Q Science > QR Microbiology
R Medicine > RN Health > RN1006 Health and food safety
Divisions: University Portal > research center > hpsr
Depositing User: pr hpsr research center
Date Deposited: 30 Jun 2020 05:19
Last Modified: 30 Jun 2020 05:19
URI: http://eprints.qums.ac.ir/id/eprint/9757

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