Featured Research

from universities, journals, and other organizations

Models Predict Poultry Pathogen Behavior

Date:
June 21, 2005
Source:
USDA / Agricultural Research Service
Summary:
Computer models that more accurately predict the growth of food pathogens are being developed by the Agricultural Research Service (ARS) and are available online. These models make better predictions about food safety because they gauge how pathogens are affected by competition from other food microbes.

Graduate student Kalpana Dulal (left) and microbiologist Dwayne Boucaud, of the University of Maryland Eastern Shore, examine expression of green fluorescent protein by Salmonella on agar medium.
Credit: Photo by Peggy Greb

Computer models that more accurately predict the growth of food pathogens are being developed by the Agricultural Research Service (ARS) and are available online. These models make better predictions about food safety because they gauge how pathogens are affected by competition from other food microbes.

Related Articles


ARS food technologist Thomas P. Oscar, at the ARS Poultry Food Safety Research Laboratory in Princess Anne, Md., models the growth and survival of Salmonella and Campylobacter on chicken. The lab, based at the University of Maryland Eastern Shore campus, is affiliated with the ARS Eastern Regional Research Center (ERRC) in Wyndmoor, Pa.

Oscar's research is part of a growing field, known as predictive microbiology, that estimates the behavior of foodborne pathogens in response to environmental conditions encountered in food production and processing operations.

Previously, models were often developed by studying pathogens in broth with no other microbes present. Researchers thought this would allow them to accurately predict pathogen behavior in food. But this is not always the case because these models don't consider the role competing microorganisms have in real-life scenarios.

ARS researchers will produce more realistic models using a system to rate the performance of current models. Oscar recently developed an "acceptable prediction zone" method for evaluating existing models. The method establishes criteria for verifying and validating models, classifying them to show which are best, and then pinpointing changes to improve the models.

According to Oscar, most current broth models predict much higher pathogen numbers than would be present in real food with microbial competition.

Posting poultry pathogen models, as well as other food safety models, on the ERRC's Pathogen Modeling Program Website should accelerate the use of models by food industries and other professionals in the field of predictive microbiology.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


Story Source:

The above story is based on materials provided by USDA / Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA / Agricultural Research Service. "Models Predict Poultry Pathogen Behavior." ScienceDaily. ScienceDaily, 21 June 2005. <www.sciencedaily.com/releases/2005/06/050619193624.htm>.
USDA / Agricultural Research Service. (2005, June 21). Models Predict Poultry Pathogen Behavior. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2005/06/050619193624.htm
USDA / Agricultural Research Service. "Models Predict Poultry Pathogen Behavior." ScienceDaily. www.sciencedaily.com/releases/2005/06/050619193624.htm (accessed January 31, 2015).

Share This


More From ScienceDaily



More Computers & Math News

Saturday, January 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Google Forced To Obey Law, Changes U.K. Privacy Policy

Google Forced To Obey Law, Changes U.K. Privacy Policy

Newsy (Jan. 30, 2015) Google has agreed to make its privacy policy more transparent in compliance with a U.K. law. Video provided by Newsy
Powered by NewsLook.com
Newsweek's Tech Sexism Story: More Than Just A Cover

Newsweek's Tech Sexism Story: More Than Just A Cover

Newsy (Jan. 29, 2015) Some objected to the art for Newsweek&apos;s cover story "What Silicon Valley Thinks of Women," but it&apos;s achieved one mission: getting people talking. Video provided by Newsy
Powered by NewsLook.com
Now Bill Gates Is 'Concerned' About Artificial Intelligence

Now Bill Gates Is 'Concerned' About Artificial Intelligence

Newsy (Jan. 29, 2015) Bill Gates joins the list of tech moguls scared of super-intelligent machines. He says more people should be concerned, but why? Video provided by Newsy
Powered by NewsLook.com
Facebook Rides Video, Mobile Waves To A Huge Quarter

Facebook Rides Video, Mobile Waves To A Huge Quarter

Newsy (Jan. 29, 2015) Mobile advertising now accounts for almost three quarters of Facebook’s total ad revenue. Video provided by Newsy
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


Space & Time

Matter & Energy

Computers & Math

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