Journal of Food, Agriculture and Environment

Vol 6, Issue 1,2008
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Survival of Escherichia coli O157:H7 in minced meat and hamburger patties


Gurhan Ciftcioglu1*, Ozge O. Arun2, Aydin Vural3, Ali Aydin1, Harun Aksu1

Recieved Date: 2007-10-06, Accepted Date: 2007-12-27


Escherichia coli O157:H7 has been recognized as human pathogen first in 1982. Its viability at lower temperatures has been proved in different in-vitro studies. It has been planned to determine the viability of inoculated E. coli O157:H7 strain in original flora of minced meat samples and original formula and microflora of hamburger patties as an actual model, during cold and frozen storage. For this purpose, minced meat and hamburger patty samples have been inoculated with 5 log cfu/g level and stored at 4.0°C or –18.0°C and analyzed at days 1, 2, 3, 5, 7, 9 and at days 10, 20, 30, 60, 120, 180, respectively. Reduction in E. coli O157:H7 numbers were found significant in hamburger patties. E. coli O157:H7 counts have been detected as 4.90 log cfu/g at the end of the 9 days storage and 4.01 log cfu/g at the end of the 180 days of storage in hamburger patties. Nevertheless, reduction levels were not as high as reported in previous in-vitro studies. There were no significant changes in inoculated minced meat samples at both cold and frozen storage. It has been concluded that E. coli O157:H7 was more stable in minced meat and hamburger patties, which have original formula and with accompanying microbial flora, when compared to in-vitro studies. Further studies should be held in order to investigate the behavior of E. coli O157:H7 in actual food chain of hamburgers.


E.coli O157:H7, minced meat, hamburger, frozen, cold, storage, survival

Journal: Journal of Food, Agriculture and Environment
Year: 2008
Volume: 6
Issue: 1
Category: Food and Health
Pages: 24-27

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :