Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Combining Salt With Heat Shows Way to Reduce Salmonella in UA Project

19.08.2010
Poultry processors who constantly engage in the battle to keep Salmonella contamination off their products may have a new procedure at their disposal: add some salt and turn up the heat.

It's more complex than just that, but it's the key point of recent Food Safety Consortium research by Sara Milillo, a postdoctoral research associate in food science at the University of Arkansas Division of Agriculture. Milillo reached her findings with Steven C. Ricke, director of the university's Center for Food Safety, where Milillo is conducting research under a two-year U.S. Department of Agriculture fellowship grant.

"Our goal is to come up with a multiple hurdle treatment where we combine things to help prevent bacterial resistance by using different treatments that attack different functions or parts of the cells simultaneously," Milillo explained.

Milillo's study, which was published in the Journal of Food Science, examined the application of heat at 55 degrees Celsius (131 degrees Fahrenheit) plus an acidified organic acid salt solution as a way of reducing Salmonella on chicken. The combined treatment resulted in significant reduction of the pathogen, leading Milillo to conclude that it may represent an effective method for decontaminating poultry carcasses during processing.

Milillo also tried heat and salt treatments separately and found that neither one was adequate standing alone to do the job. An application of 2.5 percent organic acid salt solution did not reduce Salmonella appreciably. "We did heat alone to see if that had an effect by itself and it didn't, even beyond 55 degrees C," she said.

These experiments were conducted using chicken juice, a raw chicken model medium, rather than chicken carcasses. The results tell enough of a story to draw valid conclusions, but more information will be available by taking the research to another level that uses chicken carcasses.

"We can screen treatments much faster in a broth-model type of situation," Milillo said. "We're hoping the chicken juice gets us a step closer to an actual raw poultry system. But by using chicken juice initially we can screen lots of treatments and narrow down what's the most effective before we go into a more costly use of actual carcasses. I view this as using your resources efficiently."

Milillo and industry personnel have reviewed processing procedures that could be adapted to the research findings. Heated washes are used in steps to clean carcasses, so the use of a salt additive in a heated rinse might be one place to implement new methods.

Experiments with carcasses will come later, possibly followed later by tests to determine how the combined heat and organic acid salt treatments would apply to poultry after it has been eviscerated in the processing plant.

"At any point where risk of a carcass being contaminated is higher there is a need for more effective antimicrobials," Milillo said. "So save your most powerful antimicrobial interventions for those processing steps with the ultimate goal of an even safer product."

Dave Edmark, Food Safety Consortium Communications Director, 479-575-5647 or dedmark@uark.edu

Sara Milillo, 479-575-6515 or smilillo@uark.edu

Dave Edmark | Newswise Science News
Further information:
http://www.uark.edu

More articles from Health and Medicine:

nachricht How prenatal maternal infections may affect genetic factors in Autism spectrum disorder
22.03.2017 | University of California - San Diego

nachricht Camouflage apples
22.03.2017 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Pulverizing electronic waste is green, clean -- and cold

22.03.2017 | Materials Sciences

Astronomers hazard a ride in a 'drifting carousel' to understand pulsating stars

22.03.2017 | Physics and Astronomy

New gel-like coating beefs up the performance of lithium-sulfur batteries

22.03.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>