Featured Research

from universities, journals, and other organizations

Traces of listeria found in Vancouver ready-to-eat fish products

Date:
February 27, 2012
Source:
University of British Columbia
Summary:
A new study has found traces of the bacteria listeria in ready-to-eat fish products sold in metro Vancouver, Canada.

UBC food microbiologist Kevin Allen.
Credit: Martin Dee

A University of British Columbia study has found traces of the bacteria listeria in ready-to-eat fish products sold in Metro Vancouver. UBC food microbiologist Kevin Allen tested a total of 40 ready-to-eat fish samples prior to their best before date. Purchased from seven large chain stores and 10 small retailers in Metro Vancouver, these products included lox, smoked tuna, candied salmon and fish jerky.

Related Articles


The findings -- published in a recent issue of the journal Food Microbiology -- show that listeria was present in 20 per cent of the ready-to-eat fish products. Of these, five per cent had the more virulent variety of listeria monocytogenes.

Allen says although the listeria monocytogenes levels in the ready-to-eat fish products met federal guidelines, the bacteria can multiply during handling and storage -- particularly toward the end of shelf life.

"Additional handling of ready-to-eat foods in stores, such as slicing, weighing, and packaging, may increase the potential for cross-contamination," says Allen. "While listeria bacteria can be killed by high heat, most people eat these fish products without further cooking."

He adds, "What this means for consumers is that pregnant women, the elderly and anyone with a compromised immune system should be aware of the health risks."

An assistant professor at the Faculty of Land and Food Systems (LFS), Allen led the study with co-authors Lili Mesak, a UBC research assistant, and Jovana Kovačevic, an LFS food science graduate student.

The researchers also tested ready-to-eat meat products from the same Metro Vancouver retailers where they bought the fish. However, they didn't find listeria in any of the 40 meat samples which included bologna, corned beef, cooked ham and pepperoni.

Eating foods spoiled with listeria monocytogenes that exceed federal guidelines of 100 listeria cells per gram can cause illness ranging from diarrhea to vomiting. Listeriosis infection can also result in brain and blood infections and is fatal in an estimated 20-40 per cent of cases.


Story Source:

The above story is based on materials provided by University of British Columbia. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jovana Kovačević, Lili R. Mesak, Kevin J. Allen. Occurrence and characterization of Listeria spp. in ready-to-eat retail foods fromVancouver, British Columbia. Food Microbiology, 2012; 30 (2): 372 DOI: 10.1016/j.fm.2011.12.015

Cite This Page:

University of British Columbia. "Traces of listeria found in Vancouver ready-to-eat fish products." ScienceDaily. ScienceDaily, 27 February 2012. <www.sciencedaily.com/releases/2012/02/120227132837.htm>.
University of British Columbia. (2012, February 27). Traces of listeria found in Vancouver ready-to-eat fish products. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2012/02/120227132837.htm
University of British Columbia. "Traces of listeria found in Vancouver ready-to-eat fish products." ScienceDaily. www.sciencedaily.com/releases/2012/02/120227132837.htm (accessed March 27, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, March 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Jockey Motion Tracking Reveals Racing Prowess

Jockey Motion Tracking Reveals Racing Prowess

Reuters - Innovations Video Online (Mar. 26, 2015) Using motion tracking technology, researchers from the Royal Veterinary College (RVC) are trying to establish an optimum horse riding style to train junior jockeys, as well as enhance safety, health and well-being of both racehorses and jockeys. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Botswana Talks to End Illegal Wildlife Trade

Botswana Talks to End Illegal Wildlife Trade

AFP (Mar. 25, 2015) Experts are gathering in Botswana to try to end the illegal wildlife trade that is decimating populations of elephants, rhinos and other threatened species. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
Elephants Help Keep 18-Wheeler From Toppling Over

Elephants Help Keep 18-Wheeler From Toppling Over

Newsy (Mar. 25, 2015) The Natchitoches Parish Sheriff&apos;s Office discovered two elephants keeping a tractor-trailer that had gotten stuck in some mud upright on a highway. Video provided by Newsy
Powered by NewsLook.com
Baby 'pet' Orangutan Rescued from Chicken Cage Takes First Steps

Baby 'pet' Orangutan Rescued from Chicken Cage Takes First Steps

Reuters - Light News Video Online (Mar. 25, 2015) Buti, a baby orangutan who was left malnourished in a chicken cage before his rescue, takes his first steps after months of painful physical therapy. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins