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Listeria monocytogenes in retailed raw chicken meat in Malaysia

S G Goh1, C H Kuan, Y Y Loo

  • 1Center of Excellence for Food Safety Research, Universiti Putra Malaysia, Selangor Darul Ehsan, Malaysia. gohsurguat@hotmail.com

Poultry Science
|September 20, 2012
PubMed

Insights

Listeria monocytogenes was found in 20% of raw chicken samples. Chicken breast had the highest contamination, with hypermarket samples showing more Listeria monocytogenes than wet market samples.

Area of Science:

  • Food safety
  • Microbiology
  • Public health

Background:

  • Listeria monocytogenes is a significant foodborne pathogen.
  • Raw chicken meat is a potential vehicle for Listeria monocytogenes transmission.
  • Understanding prevalence in different retail environments is crucial for risk assessment.

Purpose of the Study:

  • To determine the prevalence and distribution of Listeria monocytogenes in raw chicken meat from hypermarkets and wet markets.
  • To quantify Listeria monocytogenes levels using the most probable number (MPN) PCR method.
  • To compare contamination rates between different chicken parts and market types.

Main Methods:

  • Random sampling of chicken drumsticks, breasts, and thighs.
  • Quantification of Listeria monocytogenes using the most probable number (MPN) PCR method.
  • Statistical analysis of prevalence data based on sample type and market source.

Main Results:

  • Listeria monocytogenes was detected in 20% of all raw chicken samples analyzed.
  • Chicken breast exhibited the highest occurrence rate (42.03%) of Listeria monocytogenes.
  • Hypermarket samples showed a higher prevalence (25.71%) compared to wet market samples (14.29%).
  • Contamination levels ranged from <3.0 to 16 MPN•g(-1).

Conclusions:

  • Listeria monocytogenes is a common contaminant in raw chicken meat, posing a public health risk.
  • Further research into processing methods is essential to reduce or eliminate Listeria monocytogenes in poultry.
  • Enhanced surveillance and control measures are needed to ensure chicken meat safety.

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