News tagged with salmonella
Food, water safety provide new challenges for today's sensors
Sensors that work flawlessly in laboratory settings may stumble when it comes to performing in real-world conditions, according to researchers at the Department of Energy's Oak Ridge National Laboratory.
May 24, 2012 |
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Microbiologist discovers new super-preservative
(PhysOrg.com) -- In one of those freak accidents that sometimes occur in science, where someone is looking at something for one purpose and finds another for it, Dan O'Sullivan has found a use for a byproduct of harmless ...
Aug 17, 2011 |
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Researchers turn Salmonella into antiviral gene therapy agent
New experiments at the University of California, Berkeley, may one day lead to anti-viral treatments that involve swallowing Salmonella bacteria, effectively using one bug to stop another.
Medicine & Health / Medical research
Feb 07, 2011 |
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Scientists identify a deadly tool in Salmonella's bag of tricks
The potentially deadly bacterium Salmonella possesses a molecular machine that marshals the proteins it needs to hijack cellular mechanisms and infect millions worldwide.
Feb 03, 2011 |
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Simple device can ensure food gets to the store bacteria free
A Purdue University researcher has found a way to eliminate bacteria in packaged foods such as spinach and tomatoes, a process that could eliminate worries concerning some food-borne illnesses.
Mar 02, 2009 |
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Everything flows in rapid diagnostic tests
(Phys.org) -- Our ability to detect pathogens has become quite good, but it usually requires complex laboratory techniques. Sometimes we need a quick result, or there is no laboratory nearby. Portable and ...
Chemistry / Analytical Chemistry
Apr 12, 2012 |
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Scientists discover multiple gene switches in Salmonella, offer new ways to curb infection
Scientists have discovered multiple gene switches in Salmonella that offer new ways to curb human infection. The discovery of the mechanisms of gene regulation could lead to the development of antibiotics to reduce the le ...
Apr 23, 2012 |
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Popcorn-shaped gold particles gang up on Salmonella
Take an ounce of lettuce, test it for 17 hours, and the results show whether that mainstay ingredient in green salads is contaminated with Salmonella, the food poisoning bacteria that sickens millions of people each year. ...
Nanotechnology / Bio & Medicine
Mar 28, 2012 |
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Study uncovers how Salmonella avoids the body's immune response
UC Irvine researchers have discovered how Salmonella, a bacterium found in contaminated raw foods that causes major gastrointestinal distress in humans, thrives in the digestive tract despite the immune system's best effort ...
Mar 14, 2012 |
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Researchers find a way to detect stealthy, 'hypervirulent' Salmonella strains
A recent discovery of "hypervirulent" Salmonella bacteria has given UC Santa Barbara researchers Michael Mahan and Douglas Heithoff a means to potentially prevent food poisoning outbreaks from these partic ...
Apr 12, 2012 |
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New study overturns orthodoxy on how macrophages kill bacteria
For decades, microbiologists assumed that macrophages, immune cells that can engulf and poison bacteria and other pathogens, killed microbes by damaging their DNA. A new study from the University of Illinois ...
Apr 27, 2009 |
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Salmonella stays deadly with a 'beta' version of cell behavior
Salmonella cells have hijacked the protein-building process to maintain their ability to cause illness, new research suggests.
Aug 14, 2011 |
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How Salmonella forms evil twins to evade the body's defenses
An unusual regulatory mechanism that controls the swimmer/non-swimmer option in genetically identical Salmonella also impacts the bacteria's ability to cause infection.
Dec 08, 2011 |
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Newfound hijacked proteins linked to salmonella virulence
Scientists have discovered that bacteria like E. coli and Salmonella have a sneaky way of making minor alterations to their genes to boost their chances for infection.
Aug 23, 2011 |
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E. coli, salmonella may lurk in unwashable places in produce
(PhysOrg.com) -- Sanitizing the outside of produce may not be enough to remove harmful food pathogens, according to a Purdue University study that demonstrated that Salmonella and E. coli can live inside plant ...
Aug 15, 2011 |
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Salmonella
S. bongori S. enterica
Salmonella is a genus of rod-shaped, Gram-negative, non-spore forming, predominantly motile enterobacteria with diameters around 0.7 to 1.5 µm, lengths from 2 to 5 µm, and flagella which project in all directions (i.e. peritrichous). They are chemoorganotrophs, obtaining their energy from oxidation and reduction reactions using organic sources and are facultative anaerobes; most species produce hydrogen sulfide, which can readily be detected by growing them on media containing ferrous sulfate, such as TSI. Most isolates exist in two phases; phase I is the motile phase and phase II the non-motile phase. Cultures that are non-motile upon primary culture may be swithched to the motile phase using a Craigie tube.
Salmonella are closely related to the Escherichia genus and are found worldwide in warm- and cold-blooded animals, in humans, and in nonliving habitats. They cause illnesses in humans and many animals, such as typhoid fever, paratyphoid fever, and the foodborne illness salmonellosis.
Salmonella is named for pathologist D.E. Salmon.
For more information about Salmonella, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
