Navigation Links
MU scientist develops salmonella test that makes food safer, reduce recalls

COLUMBIA, Mo. Earlier this year, an outbreak of salmonella caused by infected eggs resulted in thousands of illnesses before a costly recall could be implemented. Now, University of Missouri researchers have created a new test for salmonella in poultry and eggs that will produce faster and more accurate results than most currently available tests. The new test could have prevented the contaminated eggs from being shipped to stores.

"Processors and consumers will benefit from the speed and sensitivity of the new test's results," said Azlin Mustapha, associate professor of food science in the College of Agriculture, Food and Natural Resources. "This will keep companies from shipping contaminated products, and thus, keep salmonella infected products out of consumers' hands."

Salmonella is the most common cause of food poisoning in the United States, according to the Centers for Disease Control. Salmonellosis, the disease caused by salmonella, causes diarrhea, vomiting, fever, abdominal cramps and, in severe cases, death. Mustapha said salmonella testing in poultry is important because it persists in birds' spleens and reproductive tracts. An infected bird passes the infection on to all of its eggs.

The most commonly used testing method for salmonella can take up to five days to produce results. Mustapha's research allows scientists to use a process, known as polymerase chain reaction (PCR), which can cut testing time to as little as five to 12 hours. PCR-based testing methods for salmonella have been available for use by the food industry for years, but current methods often produce false-positive results because they do not differentiate between live and dead salmonella, thus skewing the accuracy of the test. Only live salmonella cells trigger salmonellosis.

Mustapha modified the PCR test by adding a dye to the test sample. The dye is absorbed by dead salmonella cells; thus, the PCR test can ignore the dead cells. Mustapha's modification lets food scientists use the PCR test to capitalize on its speed, selectivity and sensitivity, but avoid false-positive tests by differentiating between dead and live cells.

The reduced testing time would enable companies to have accurate test results before a product is shipped. With current tests, food could be in stores before salmonella test results are available. This new technology will enable companies to avoid costly recalls and keep consumers safe.

Mustapha said both companies and testing agencies could use the testing process she has developed. Companies must make an initial investment in a PCR instrument and train personnel to use it. However, she said the system requires less labor and time than conventional testing techniques. A similar process developed by Mustapha to detect E. coli in ground beef has been adopted by the Missouri Department of Agriculture.


Contact: Christian Basi
University of Missouri-Columbia

Related biology news :

1. Scientists discover genes linking puberty timing to body fat in women
2. AgriLife scientist: Functional amino acids regulate key metabolic pathways
3. Bacteria use toxic darts to disable each other, according to UCSB scientists
4. New Scripps Florida scientist awarded pair of unconventional grants
5. Scientists question indicator of fisheries health, evidence for fishing down food webs
6. OSU, Oxford, others launch citizen scientist climate modeling initiative
7. Scientists learn more about how kidneys fail and how new drugs may intervene
8. Scripps Research scientists identify new mechanism regulating daily biological rhythms
9. Caltech scientists describe the delicate balance in the brain that controls fear
10. Darwins theory of gradual evolution not supported by geological history, NYU scientist concludes
11. UNC scientists identify cellular communicators for cancer virus
Post Your Comments:
Related Image:
MU scientist develops salmonella test that makes food safer, reduce recalls
(Date:4/28/2016)... First quarter 2016:   , Revenues amounted ... quarter of 2015 The gross margin was 49% (27) ... the operating margin was 40% (-13) Earnings per share ... operations was SEK 249.9 M (21.2) , Outlook   ... M. The operating margin for 2016 is estimated to ...
(Date:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/15/2016)... 15, 2016  A new partnership announced today ... underwriting decisions in a fraction of the time ... and high-value life insurance policies to consumers without ... With Force Diagnostics, rapid testing (A1C, Cotinine and ... (blood pressure, weight, pulse, BMI, and activity data) ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... 23, 2016 , ... Charm Sciences, Inc. is pleased to ... AOAC Research Institute approval 061601. , “This is another AOAC-RI approval of the ... Vice President of Regulatory and Industrial Affairs. “The Peel Plate methods perform comparably ...
(Date:6/23/2016)... , June 23, 2016   EpiBiome , ... secured $1 million in debt financing from Silicon Valley ... up automation and to advance its drug development efforts, ... new facility. "SVB has been an incredible ... the services a traditional bank would provide," said Dr. ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
(Date:6/23/2016)... , June 23, 2016 ... Hematology Review, 2016;12(1):22-8 ... , the peer-reviewed journal from touchONCOLOGY, Andrew ... escalating cost of cancer care is placing an ... result of expensive biologic therapies. With the patents ...
Breaking Biology Technology: