Prevalence, characterization, and genetic diversity of Listeria monocytogenes isolated from foods of animal origin in North East India

Listeria monocytogenes is a pathogenic microorganism infects man mostly through food. A total of 1615 samples of foods of animal origin and water were collected from retail meat shops of North-Eastern India and processed. Sixty-three (3.9%) samples were positive for L. monocytogenes. Animal origin f...

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Bibliographic Details
Published in:Food biotechnology 2019-07, Vol.33 (3), p.237-250
Main Authors: Shakuntala, Ingudam, Das, Samir, Ghatak, Sandeep, Milton, Arockiasamy Arun Prince, Sanjukta, Rajkumari, Puro, Kekungu-U, Pegu, Raj Kumar, Duarah, Aparajita, Barbuddhe, Sukhadeo Balirao, Sen, Arnab
Format: Article
Language:English
Subjects:
Food
Food irradiation
Food processing industry
Genetic analysis
Genetic diversity
geno serogrouping
Health hazards
Health risks
India
Listeria
Listeria monocytogenes
Meat
Pathogens
Pork
Poultry
Public health
RAPD- and ERIC-PCR
Virulence
virulence genes
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Summary:Listeria monocytogenes is a pathogenic microorganism infects man mostly through food. A total of 1615 samples of foods of animal origin and water were collected from retail meat shops of North-Eastern India and processed. Sixty-three (3.9%) samples were positive for L. monocytogenes. Animal origin foods showing the highest prevalence was chevon (9.8%) followed by beef (8.9%), chicken (8.5%), pork (2.8%) and milk (1.8%). The prevalence rate in water from retail meat shops was 10%. Recovered L. monocytogenes were distributed into 3 serogroups, of which 74.6% fit in to 1/2a, 3a serogroup, 17.5% to 1/2b, 3b and 7.9 % to 4b, 4d, 4e serogroups. Thirty-five isolates out of 63 possessed all the tested four virulence genes. RAPD- and ERIC -PCR based analyses jointly revealed a discriminative genetic profile for the L. monocytogenes. On the whole, the occurrence of L. monocytogenes in foods of animal origin of North Eastern India displays public health hazard.
ISSN:0890-5436
1532-4249
DOI:10.1080/08905436.2019.1617167