Navigation Links
E. coli, salmonella may lurk in unwashable places in produce
Date:8/15/2011

WEST LAFAYETTE, Ind. - 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 tissues.

E. coli 0157:H7 was present in tissues of mung bean sprouts and Salmonella in peanut seedlings after the plants' seeds were contaminated with the pathogens prior to planting. Amanda Deering, a postdoctoral researcher in food science, said seeds could be contaminated in such a manner before or after planting through tainted soil or water.

"The pathogens were in every major tissue, including the tissue that transports nutrients in plants," said Deering, whose results were published in separate papers in the Journal of Food Protection and Food Research International.

Deering and Robert Pruitt, a professor of botany and plant pathology, said finding pathogens inside plants has been challenging because tests require slicing off pieces of the plants, which can move the bacteria from the outside to the inside or vice versa. It becomes difficult to know where a pathogen might have been before the plant was cut.

"The results are often imprecise because the methods allow bacteria to move," said Pruitt, a co-author of the findings.

Deering used a fixative to freeze the location of the bacteria in the plant tissues before slicing samples. Antibodies labeled with fluorescent dye were used to detect the pathogens, a process called immunocytochemistry.

"This shows us as close to what was in the plant when it was living as possible," Deering said. "The number of bacteria increased and persisted at a high level for at least 12 days, the length of the studies."

Deering said she was able to count hundreds of bacteria in almost every type of tissue.

Proper sanitization would eliminate Salmonella and E. coli from the surface of foods, but not inner tissues, Deering
'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Salmonella stays deadly with a beta version of cell behavior
2. New target found for nitric oxides attack on salmonella bacteria
3. Bacterium Salmonella enterica regulates virulence according to iron levels found in its surroundings
4. Salmonella utilize multiple modes of infection
5. Zooming in on the weapons of Salmonella
6. MU scientist develops salmonella test that makes food safer, reduce recalls
7. Mechanism uncovered behind Salmonella virulence and drug susceptibility
8. Faster Salmonella detection now possible with new technique
9. Probiotic without effect against Salmonella
10. Hygienic Lab at U. Iowa first to confirm salmonella in nationwide outbreak
11. Yale researchers uncover secrets of salmonellas stealth attack
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
E. coli, salmonella may lurk in unwashable places in produce
(Date:7/11/2014)... Institute of Standards and Technology (NIST) need a ... they often prove that necessity is truly the ... for M. Lorna De Leoz and Stephen Stein, ... glycomics. Glycomics is the study of the abundant, ... to proteins and lipids and influence cellular processes, ...
(Date:7/11/2014)... team of researchers, including scientists from the Max Planck ... reported a major step in understanding photosynthesis, the process ... the oxygen in its atmosphere and which is therefore ... , The researchers report the first direct visualization ... the step in which a specific protein complex, photosystem ...
(Date:7/11/2014)... has demonstrated that transplantation of mesenchymal stem cells can ... mouse models of Alzheimer,s disease (AD) and improve tissue ... Few studies are reported on the therapeutic effect of ... and on the effect on oxidative injury and neurogenesis ... and her team, School of Life Sciences, Tsinghua University, ...
Breaking Biology News(10 mins):A first direct glimpse of photosynthesis in action 2
... and the Manchester Metropolitan University have carried out the ... amber more than 30 millions years ago. , The ... the Dominican (Caribbean) regions has revealed new insights into ... period. , It is the first time ancient spiders ...
... at the National Institute of Allergy and Infectious Disease ... (NIH), have identified a critical human cell surface molecule ... virus that causes Kaposi's sarcoma and certain forms of ... HIV/AIDS, and it typically manifests as multiple purple-hued skin ...
... the amino acid supplement L-arginine following a heart attack ... may be associated with an increased risk of death, ... of JAMA. , L-arginine is a widely available dietary ... with hypertension, angina, heart failure and sexual dysfunction, according ...
Cached Biology News:Amber reveals ecology of 30 million year old spiders 2Landmark discovery of a Kaposi's sarcoma-associated herpesvirus receptor 2Landmark discovery of a Kaposi's sarcoma-associated herpesvirus receptor 3Little known DNA repair enzyme may be a tumor suppressor gene 2
(Date:7/10/2014)... Los Angeles, CA (PRWEB) July 10, 2014 ... Analytical and Bioanalytical techniques during 18-20 August, 2014 at ... to critically review the recent developments in Analytical & ... across the globe. , Speaking on this occasion, Dr. ... that Analytica Acta conference is a remarkable one ...
(Date:7/10/2014)... , July 10, 2014 ... Dmitry Medvedev , presented Russia,s ... BIOCAD . The Company is developing a unique ... MabNext project BIOCAD develops a number of innovative drugs ... autoimmune diseases. The ceremony took place at the International ...
(Date:7/10/2014)... --  Ceres, Inc . (Nasdaq: CERE ), ... results for the three months ended May 31, 2014 ... Ceres reported that the company and its customers have ... in Brazil, which concluded in June, despite dry and ... for part of the growing season. Yields of several ...
(Date:7/10/2014)... new study published today in the journal PNAS ... found that time of day and sleep deprivation have ... be crucial when looking at the best time of ... heart disease, and for administering medicines effectively. , Researchers ... Cancer Research, London, investigated the links between sleep deprivation, ...
Breaking Biology Technology:A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9Time of day crucial to accurately test for diseases, new research finds 2
... Stockholders Approve Board Authority to Implement Reverse Stock Split and ... of Total Shares and Authorized Shares, NEW HAVEN, Conn., ... that a Special Meeting of,Stockholders was held at the Omni ... At the meeting, shareholders voted to approve amendments to the,Company,s ...
... - For Full Year 2007, Strong Operating Earnings and Tax Benefits Drive ... and Product Sales Both Grow 14% -, - In 2008, Gen-Probe Expects ... Driving Anticipated EPS of ... GPRO ) today reported strong financial results for the fourth,quarter and ...
... DENVER, Feb. 13 Rocky Mountain Biosystems, ... announced receipt of a,grant award of approximately ... of Allergy and Infectious Diseases at the ... Self-Administered Vaccination Electromechanical,(SAVE) technology for influenza vaccination. ...
Cached Biology Technology:Vion Pharmaceuticals Holds Special Meeting of Stockholders 2Vion Pharmaceuticals Holds Special Meeting of Stockholders 3Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 2Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 3Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 4Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 5Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 6Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 7Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 8Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 9Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 10Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 11Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 12Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 13Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 14Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 15Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 16NIH Funds Vaccine Research for Needle-free and Self-Administered Protection Against Pandemic Influenza 2
Mouse Anti-Human Killer Cell Immunoglobulin-like Receptor, Two Domains, Long Cytoplasmic Tail, 2 (KIR2DL2 (KIR2DL3 Monoclonal Antibody Family: Immunoglobulin Sub-Family: not assigned-Immunogl...
pH-dependent fluorescence; Maximum intensity observed in basic solutions....
Mouse anti human pro-Relaxin-2...
Mouse Anti-Human Kallikrein 2 (Hk2)...
Biology Products: