Prevalence of Listeria monocytogenes in different kinds of meat in Tehran province, Iran

Abstract

Purpose – The purpose of this paper is to determine the prevalence of Listeria monocytogenes as an important foodborne pathogen in different kinds of meat. Design/methodology/approach – In total, 410 samples, including fresh and frozen meats of turkey, quail, chicken, ostrich, cattle, sheep and camel, fresh chicken liver and fresh minced meat were gathered and then analyzed according to USDA-FSIS method. To enumerate L. monocytogenes, the MPN procedure was used and also, strains were serotyped by using commercial specific antisera. Findings – It was found that 28.05 percent of samples were positive for L. monocytogenes and the contamination of beef meat was higher than the others. The range of microbial load was from <2 to 940 MPN g−1. Most of the samples (94.39 percent) had a microbial load of <100 MPN g−1. Moreover, 56 percent of the strains belonged to serogroup 1, especially to 1/2a, although, the most frequently isolated serotype was serotype 4b (38.3 percent) in all samples. These findings indicate the potential risk of contamination in different kinds of meats by L. monocytogenes. Originality/value – This survey is of academic value and of value to those working in the food hygiene and safety. Also, to the best knowledge of these researchers, there has been no serious research on this topic with all its aspects in Iran.

Zoonotic implications of camel diseases in Iran

“…Most of the infected camels are F I G U R E 1 Iranian camel's numbers categorized by provinces according to the census of Ministry of Jihad -e-Agriculture, 2017 (Ebadzadeh et al, 2018). (1) Alborz (2) Ardabil (3) Azerbaijan, East (4) Azerbaijan, West (5) Bushehr (6) Chahar Mahaal and Bakhtiari (7) Fars (8) Gilan (9) Golestan (10) Hamadan (11) Hormozgān (12) Ilam (13) Isfahan (14) Kerman (15) (Mashak et al, 2015) TA B L E 1 (Continued) asymptomatic carriers of brucellosis. Clinical signs of camel brucellosis are epididymitis and orchitis, lesions of lymph nodes and joint capsules, metritis, abortion and reduced fertility (Esmaeili, 2015;Wernery, 2014).…”

Chemical Composition, Antioxidant and Antibacterial Activity of Bunium persicum, Eucalyptus globulus, and Rose Water on Multidrug-Resistant Listeria Species

“…Also, numerous studies in Iran have detected L monocytogenes and its other species in various types of foods, including seafood, 7 open-air fish markets, 8 raw milk, 9 meat and meat products, and ready-to-eat foods. 10 , 11 …”

“…Also, numerous studies in Iran have detected L monocytogenes and its other species in various types of foods, including seafood, 7 open-air fish markets, 8 raw milk, 9 meat and meat products, and readyto-eat foods. 10,11 Nowadays, the development of antibiotic resistance both in animal and human zoonotic bacterial pathogens has been related to the administration of antimicrobial agents in food animal production as growth promoters and their extensive therapeutic use. The antimicrobial agents can be passed through the food chain and contribute to the emergence of resistant bacteria that can be transferred directly to humans after consumption.…”

Occurrence and antibiogram of Listeria monocytogenes Isolates from Retail Meat Shops at Erbil City, Kurdistan Region, Iraq

“…In contrast, higher rates were reported from Iran (28.05%) (Mashak, 2015), Yemen (22.9%) (Almashhadany et al ., 2016), Erbil city (28.1%) (Salim et al ., 2017), and Turkey (26.6%) (Arslan and Baytur, 2018). These varying occurrence rates may be attributed to difference in geographical location, hygienic condition of meat shops and workers associated with slaughtering and handling meat at different levels, the amount and source of samples collected, laboratory detection methods, and seasonal variations (Singh et al ., 2019).…”