Navigation Links
Researchers Develop Technologies to Devour Food Pathogens

Purdue researchers are developing two inexpensive technologies that may be able to prevent future food-borne illness//, such as the recent outbreak of E. coli in contaminated spinach.

Together, these technologies rapidly detect and eradicate food-borne pathogens.

The first method uses a laser to detect and identify many types of bacteria, and is about three times faster and one-tenth as expensive as current technology.

A second innovation uses chlorine dioxide gas to kill pathogens on produce, fresh fruits and vegetables. This would be a large step up from current technologies, which mainly involve washing and scrubbing, and cannot completely rid a product of a pathogen like E. coli, said Richard Linton, a professor of food science.

"We can use the laser technology to detect problems more quickly, determine exactly what the pathogen is and where it came from," Linton said. "As for using this gas as a disinfectant, I would say that in my 13 years of doing research, it is 10,000 to 100,000 times more effective than any process I have seen."

While different in nature, the methods have the common goal of keeping food safe and preventing people from getting sick, and have each progressed to the point where they could be commercialized, Linton said. Patents are pending on both technologies, and the laser technology is available for licensing.

Linton says there is a definite need for these new methods.

"Current technologies are insufficient to prevent food-borne illness," he said. "In the present system, once produce is contaminated with something like E. coli, that's it."

Arun Bhunia (pronounced Boon-ee-yuh), also a professor of food science, leads the team that developed the laser-based technology, called "Bacteria Rapid Detection Using Optical Scattering Technology." The process works by shining a laser though a petri dish containing bacterial colonies. A computer program dete rmines the type of bacteria by analyzing how light is refracted-a unique "scatter pattern."

Bhunia has shown his technology is capable of recognizing Listeria monocytogenes, a microbial pathogen that is the leading cause of food-borne illness. The pathogen has a high mortality rate-one in five-and kills about 500 people each year. E. coli, which has the second highest mortality rate, kills less than 1 percent of those infected.

"This is a really exciting technology," Bhunia said. "I definitely believe it could help save lives, which is our ultimate goal."

Industry has shown interest in Bhunia's technology, as well as the chlorine dioxide work done by Linton and the project's co-leader, Mark Morgan, a professor of food science.

"We are currently working on an industrial tunnel system to apply the gas to produce," Morgan said. His team is also investigating using the gas to sterilize processing equipment. "This would be very helpful, as it could speed up the sterilization process and eliminate the heat energy currently used for such processes."

Previous results have shown the gas to be highly effective at killing microbial pathogens. The largest obstacle remaining is optimizing the system to dispense the appropriate amount of chlorine dioxide, Morgan said. Enough of the gas must be deployed to kill the pathogens, but too much can cause a decrease of quality in the product, such as browning of leafy greens.

"If the product is safe, but nobody will eat it, that's not what we want," Linton said. "We are always thinking in terms of, 'Will this work for industry?' In this case, I believe the answer is yes. I would like to see this technology used regularly by industry in a couple years from now."

Both technologies have the potential to help prevent food-borne illness, Linton said, but he also noted that following proper agricultural practices is as important, if not more important, for food safety.

Since E. coli, or Escherichia coli, is found in the intestines of warm-blooded animals, it does not naturally contaminate most produce. Therefore, following more stringent sanitary policies, as well as practicing better manure and water management, can go a long way to help prevent future outbreaks, Linton said.

E. coli is especially problematic because it only takes as few as 10 cells to infect humans. Other pathogens, like salmonella, need thousands or millions of cells to cause infection.

Source-Newswise
'"/>




Related medicine news :

1. Researchers urge caution in using ear tube surgery
2. Researchers Scale to assess the Severity of Epilepsy in Kids
3. Researchers trick Alzheimers Enzyme
4. Researchers find new HIV hiding place
5. New Hair in 15 Days Could Now Be A Possibility Say Researchers
6. Researchers developed world’s smallest toothbrus
7. Researchers discover receptor cells that can cause epilepsy
8. 15 Anti-SARS Drugs Identified By China-Europe Team of Researchers
9. Researchers reversed the process of memory loss
10. Researchers Identify Key Gene That May Help Brain Treatment
11. Researchers Discover Protein That Causes Malaria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/21/2017)... ... April 21, 2017 , ... Providing broad access to ... opposition, but there is a better way to address this problem. , That was ... Pharmacy, Public Policy and Economics at the University of Southern California, who served as ...
(Date:4/21/2017)... ... April 21, 2017 , ... ... for adolescents and young adults, has kicked off its 4th annual Forum for ... This year’s theme is “Attachment Informed Therapy for Mental Health and Addiction.” ...
(Date:4/21/2017)... ... 2017 , ... The adage “Show, don’t tell” applies perfectly to Green Builder ... esteemed VISION House demonstration project series. Manifesting the concept of right-sized living, the Flex ... to live affordably and abundantly without unduly taxing the resources of our beautiful planet. ...
(Date:4/21/2017)... Arvada, CO (PRWEB) , ... April 21, 2017 ... ... health and performance system, has partnered with O2X , an active lifestyle ... are focused on improving the health of firefighters, police offers, first responders, military ...
(Date:4/21/2017)... ... 21, 2017 , ... Northern California Medical Associates ... Symposium on April 1, 2017 in Santa Rosa. This well-attended annual conference plays ... an opportunity to learn about cutting edge treatments, to collaborate, share research and ...
Breaking Medicine News(10 mins):
(Date:4/18/2017)... April 18, 2017  Cardinal Health (NYSE: ... fiscal 2017 earnings per share (EPS) guidance and providing ... is in conjunction with this morning,s announcement of the ... and Nutritional Insufficiency businesses. Cardinal Health now ... will be at the bottom of its previous guidance ...
(Date:4/18/2017)... 2017  Astute Medical, Inc., developer of biomarkers for ... presented at the 2017 National Kidney Foundation (NKF) ... through April 22. Physicians will present data on two ... risk for acute kidney injury (AKI) during the management ... Elevated levels of TIMP-2 and IGFBP-7 have ...
(Date:4/18/2017)... 18, 2017  Spero Therapeutics, LLC, a biopharmaceutical company ... bacterial infections, will present preclinical data supporting the use ... resistant (MDR) Gram-negative infections at the 27th European Congress ... 2017 in Vienna, Austria . ... "Our ongoing ...
Breaking Medicine Technology: