Prevalence and contamination levels of Listeria monocytogenes in retail foods in Japan

Int J Food Microbiol. 2000 Jul 25;59(1-2):73-7. doi: 10.1016/s0168-1605(00)00284-1.

Abstract

Retail foods in Japan were surveyed for the presence and contamination levels of L. monocytogenes. It was isolated from 12.2, 20.6, 37.0 and 25.0% of 41 minced beef, 34 minced pork, 46 minced chicken and 16 minced pork-beef mixture samples, respectively. MPN values were higher than 100/g in five (10.9%) minced chicken samples, but lower than 100/g in all minced beef, pork and pork-beef mixture samples. The organism was also isolated from 5.4% of the 92 smoked salmon samples at MPN values lower than 10/g, and from 3.3% of 213 ready-to-eat raw seafood samples at MPN values from lower than 0.3 to higher than 100/g. None of the 285 vegetable samples were contaminated with L. monocytogenes. These findings indicate that ready-to-eat raw seafoods are relatively high risk among the foods surveyed in this study.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cattle
  • Chickens
  • Colony Count, Microbial
  • Fishes / microbiology
  • Food Contamination / analysis*
  • Food Microbiology*
  • Japan
  • Listeria monocytogenes / isolation & purification*
  • Meat Products / microbiology
  • Prevalence
  • Seafood / microbiology
  • Shellfish / microbiology
  • Swine