Related Experiment Video
Updated: Sep 21, 2026

Oral Transmission of Listeria monocytogenes in Mice via Ingestion of Contaminated Food
Published on: May 6, 2013
Incidence of Listeria spp. in vegetables in Kuala Lumpur
M Y Tang1, Y M Cheong, T Zainuldin
1School of Medical Laboratory Technology, Institute for Medical Research, Jalan Pahang, Kuala Lumpur.
Abstract:
From April 1992 to September 1992, 280 samples of 10 different fresh vegetables, bought from four different market outlets in Kuala Lumpur were examined for the presence of Listeria spp. Most of the market produce were locally grown with the exception of carrots. The isolation procedure was based on the Food & Drug Administration method (modified) used for the detection of Listeria spp. Isolation media used were Listeria Selective medium and LiCl- phenylethanol-Moxalactam agars. The identification of isolates was by means of conventional biochemical tests and API Listeria identification system. Five out of the 280 samples showed Listeria contamination, Listeria monocytogenes was isolated in lettuce, sengkuang (Pachyrrhizus erosus) and selom Oenanthe javanica) and Listeria innocua was isolated from sengkuang (Pachyrrhizus erosus) and pegaga (Hydrocotyle asiatica).
Related Concept Videos
Microbes in the Production of Fermented Foods
Sources of Food Contamination
Investigation of Disease Outbreaks
Bacterial Gastroenteritis

