Wednesday, August 10, 2022
SCIENMAG: Latest Science and Health News
No Result
View All Result
  • Login
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
No Result
View All Result
Scienmag - Latest science news from science magazine
No Result
View All Result
Home SCIENCE NEWS Agriculture

Scientists discover five new species of listeria, improving food safety

May 18, 2021
in Agriculture
0
Share on FacebookShare on Twitter

IMAGE

Credit: Catharine Carlin, Cornell University

ITHACA, N.Y. – While examining the prevalence of listeria in agricultural soil throughout the U.S., Cornell University food scientists have stumbled upon five previously unknown and novel relatives of the bacteria.

The discovery, researchers said, will help food facilities identify potential growth niches that until now, may have been overlooked – thus improving food safety.

“This research increases the set of listeria species monitored in food production environments,” said lead author Catharine R. Carlin, a doctoral student in food science. “Expanding the knowledge base to understand the diversity of listeria will save the commercial food world confusion and errors, as well as prevent contamination, explain false positives and thwart foodborne outbreaks.”

One of the novel species, L. immobilis, lacked motility, or the ability to move. Listeria move a lot. Among scientists, motility was thought to be common among listeria closely related to L. monocytogenes, a well-known foodborne pathogen – and used as a key test in listeria detection methods. This discovery effectively calls for a rewrite of the standard identification protocols issued by food safety regulators, Carlin said.

As listeria species are often found co-existing in environments that support the growth of L. monocytogenes, food facilities will monitor for all listeria species to verify their sanitation practices.

Listeria monocytogenes can have profound pathogenic influence on food processing plants and those plants must be kept clean. Listeriosis has a mortality rate of 20% to 30% – even with a patient taking antibiotics, according to the U.S. Food and Drug Administration.

The Centers for Disease Control and Prevention estimate that 1,600 people in the U.S. get listeriosis annually and nearly 260 die.

“This paper describes some unique characteristics of listeria species that are closely related to listeria monocytogenes, which will be important from an evolutionary perspective and from a practical standpoint for the food industry,” said co-author Martin Wiedmann, the professor in food safety and food science. “Likely, some tests will need to be re-evaluated.”

Understanding the different listeria species is key to comprehending their similarities. “This will help us to get better about identifying listeria monocytogenes,” Wiedmann said, “and not misidentifying it as something else.”

Since 2010, Wiedmann’s research group has discovered 13 of the 26 species classified in the genus listeria.

“When you’re inspecting the environments of food processing plants or restaurants, you need to know the pathogenic listeria from the non-pathogenic species,” Wiedmann said. “You need to tell the good guys from the bad guys.”

###

The research published May 17 in the International Journal of Systematic and Evolutionary Microbiology

Media Contact
Lindsey M Hadlock
[email protected]

Original Source

https://news.cornell.edu/stories/2021/05/all-family-cornell-adds-five-species-listeria-genus

Related Journal Article

http://dx.doi.org/10.1099/ijsem.0.004795

Tags: BacteriologyBiologyFood/Food ScienceMicrobiology
Share25Tweet16Share4ShareSendShare
  • A role for cell ‘antennae’ in managing dopamine signals in the brain

    99 shares
    Share 40 Tweet 25
  • Order up: new study reveals importance of liquid structural ordering in crystallization

    79 shares
    Share 32 Tweet 20
  • Study finds second primary lung cancer is 4 percent and as high as 8 percent among surgery patients

    78 shares
    Share 31 Tweet 20
  • United Kingdom-based smoking cessation program reports that 30 percent of support in a lung cancer screening program: the Yorkshire Enhanced Stop Smoking Study (YESS)

    77 shares
    Share 31 Tweet 19
  • NELSON trial protocol more sensitive than NLST and may increase the benefits of lung cancer screening, while reducing unnecessary follow-up procedures

    77 shares
    Share 31 Tweet 19
  • Sub-lobar surgery for peripheral non-small cell lung cancer non-inferior to lobectomy

    76 shares
    Share 30 Tweet 19
ADVERTISEMENT

About us

We bring you the latest science news from best research centers and universities around the world. Check our website.

Latest NEWS

A role for cell ‘antennae’ in managing dopamine signals in the brain

Experts optimistic about converting coal plants to production of clean geothermal energy

The walk of Japanese children develops differently from children in other countries

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 193 other subscribers

© 2022 Scienmag- Science Magazine: Latest Science News.

No Result
View All Result
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US

© 2022 Scienmag- Science Magazine: Latest Science News.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In