Featured Research

from universities, journals, and other organizations

How To Reduce Risks Of Listeria Monocytogenes Contamination In Food Processes

Date:
January 28, 2008
Source:
Technical Research Centre of Finland
Summary:
A problematic pathogen occurring in food processing is Listeria monocytogenes. Its efficient control at the processing plant level requires good equipment hygiene, including functioning good manufacturing and hygiene practices used by all employees, effective means of decontamination and rapid detection of contamination sources, as well as hazard analysis systems supported by risk assessment procedures.

Sampling from a slicing machine.
Credit: Image courtesy of Technical Research Centre of Finland

A problematic pathogen occurring in food processing is Listeria monocytogenes. Its efficient control at the processing plant level requires good equipment hygiene, including functioning good manufacturing and hygiene practices used by all employees, effective means of decontamination and rapid detection of contamination sources, as well as hazard analysis systems supported by risk assessment procedures.

Related Articles


The thesis of Kaarina Aarnisalo focuses on deficiencies and improvements in these equipment hygiene and risk assessment practices with the aim of elucidating and developing the most efficient practices against L. monocytogenes.

The hygienically most problematic types of equipment in the Finnish food industry were identified as the packaging machines, conveyers, dispensers, slicing machines and cooling machines. The main reason for the equipment being considered as problematic was poor hygienic design. Equipment designers must focus their performance on more suitable equipment design. Clear deficiencies were also found in hygiene performance of the maintenance personnel in food processing plants. The results of these studies also indicate that L. monocytogenes may be transferred through maintenance work. Training of maintenance personnel with reference to hygienic practices must be increased. The results of the thesis showed that lubricants used in food processing equipment may act as contamination vehicles of L. monocytogenes.

An investigation of the efficiency of eight commonly used commercial disinfectants against L. monocytogenes strains at +5C was performed. The tested agents were generally efficient at the recommended concentrations and effect times, with only a few exceptions.

Risk assessment practices were developed by investigating and modelling recontamination of a product and by a plant-level quantitative risk assessment. Recontamination was modelled by investigating transfer of L. monocytogenes from slicing blade to slices of cold-salted salmon. As a concluding example, a practical approach to quantitative risk assessment at the plant level of L. monocytogenes in heated marinated broiler legs is presented. This approach helps food processors in illustrating the risks caused by the products for consumers.

Kaarina Aarnisalo, Research Scientist from VTT presents her doctoral thesis “Equipment hygiene and risk assessment measures as tools in the prevention of Listeria monocytogenes contamination in food processes” on 25 January 2008 at the Helsinki University of Technology.


Story Source:

The above story is based on materials provided by Technical Research Centre of Finland. Note: Materials may be edited for content and length.


Cite This Page:

Technical Research Centre of Finland. "How To Reduce Risks Of Listeria Monocytogenes Contamination In Food Processes." ScienceDaily. ScienceDaily, 28 January 2008. <www.sciencedaily.com/releases/2008/01/080123164553.htm>.
Technical Research Centre of Finland. (2008, January 28). How To Reduce Risks Of Listeria Monocytogenes Contamination In Food Processes. ScienceDaily. Retrieved March 30, 2015 from www.sciencedaily.com/releases/2008/01/080123164553.htm
Technical Research Centre of Finland. "How To Reduce Risks Of Listeria Monocytogenes Contamination In Food Processes." ScienceDaily. www.sciencedaily.com/releases/2008/01/080123164553.htm (accessed March 30, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Monday, March 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

S. Leone in New Anti-Ebola Lockdown

S. Leone in New Anti-Ebola Lockdown

AFP (Mar. 28, 2015) Sierra Leone imposed a three-day nationwide lockdown Friday for the second time in six months in a bid to prevent a resurgence of the deadly Ebola virus. Duration: 01:17 Video provided by AFP
Powered by NewsLook.com
These Popular Antibiotics Can Cause Permanent Nerve Damage

These Popular Antibiotics Can Cause Permanent Nerve Damage

Newsy (Mar. 27, 2015) A popular class of antibiotic can leave patients in severe pain and even result in permanent nerve damage. Video provided by Newsy
Powered by NewsLook.com
WH Plan to Fight Antibiotic-Resistant Germs

WH Plan to Fight Antibiotic-Resistant Germs

AP (Mar. 27, 2015) The White House on Friday announced a five-year plan to fight the threat posed by antibiotic-resistant bacteria amid fears that once-treatable germs could become deadly. (March 27) Video provided by AP
Powered by NewsLook.com
House Ready to Pass Medicare Doc Bill

House Ready to Pass Medicare Doc Bill

AP (Mar. 26, 2015) In rare bipartisan harmony, congressional leaders pushed a $214 billion bill permanently blocking physician Medicare cuts toward House passage Thursday, moving lawmakers closer to resolving a problem that has plagued them for years. (March 26) Video provided by AP
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


Health & Medicine

Mind & Brain

Living & Well

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