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Biosafety assessment of Listeria monocytogenes in vegetarian burger patties in Malaysia


Citation

Wong, Woan Chwen and Pui, Chai Fung and Chai, Lay Ching and Lee, Hai Yen and Mohamad Ghazali, Farinazleen and Tang, John Yew Huat and Ponniah, Jeyaletchumi and Tuan Chilek, Tuan Zainazor and Cheah, Yoke Kqueen and Radu, Son (2011) Biosafety assessment of Listeria monocytogenes in vegetarian burger patties in Malaysia. International Food Research Journal, 18 (1). pp. 459-463. ISSN 1985-4668; ESSN: 2231-7546

Abstract

The aim of this study was to examine vegetarian burger patties manufactured by two producers in Malaysia for the presence of Listeria monocytogenes. Brand A was produced by an established food manufacturer while Brand B was produced by a small-scaled food producer. A total of 108 samples of vegetarian burger patties produced by both manufacturers were sampled from retail market and were analyzed by combined MPN-PCR and MPN plating method. Of all the samples tested, ten (9.3%) were found to be contaminated with L. monocytogenes. The L. monocytogenes contamination level in vegetarian burger patties manufactured by producer A (20.9% of the samples were contaminated with 3-1100 MPN/g of L. monocytogenes) was significantly higher (P<0.05) than vegetarian burger patties manufactured by producer B (1.5% of the samples harbored 9.2 MPN/g of L. monocytogenes). Based on the detection and isolation rate obtained with MPN-PCR and MPN-plating, the recovery rate of the L. monocytogenes was estimated to be only 40.0% by MPN-plating approach.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Faculty of Medicine and Health Science
Publisher: Faculty of Food Science and Technology, Universiti Putra Malaysia
Keywords: L. monocytogenes; MPN-PCR; Prevalence; Recovery rate; Vegetarian burger patty
Depositing User: Nur Farahin Ramli
Date Deposited: 19 Feb 2014 07:55
Last Modified: 03 Jun 2015 07:14
URI: http://psasir.upm.edu.my/id/eprint/24075
Statistic Details: View Download Statistic

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