Navigation Links
Researchers determine factors that influence spinach contamination pre-harvest
Date:6/20/2013

A team of researchers from Texas and Colorado has identified a variety of factors that influence the likelihood of E. coli contamination of spinach on farms prior to harvest. Their research is published in the July 2013 issue of the journal Applied and Environmental Microbiology.

"Microbial contamination of produce seems strongly influenced by the time since the last irrigation, the workers' personal hygiene and the field's use prior to planting of produce," says first author Sangshin Park of Texas A&M University, College Station. "These factors, together with the role of weather in produce contamination should be the targets of future research efforts to design cost-effective strategies for control of produce contamination."

E. coli contamination of spinach on farms in Colorado and Texas was 172 times more likely if the produce field was within 10 miles of a poultry farm, and 64 times more likely if irrigated by pond water, says Park.

As E. coli is commonly used as an indicator of fecal contamination with food-borne pathogens, the practice of hygieneavailability of portable toilets and hand-washing stations for workers in the fields and the absence of grazing or hay production on the fields prior to planting spinach, reduced the risk seven-fold.

Other potential risk factors tested in the study included numbers of workers, farm size, organic vs. conventional production, the use of chemical fertilizers, compost, and manure, says Park. The researchers assayed 955 spinach samples from 12 farms in the two states, finding that generic E. coli was present on 63 of them (6.6 percent).

Of particular note, the researchers tested their statistical model for spinach contamination to determine how accurately it was able to pinpoint the level of contamination. "The assessment of the predictive performance of a developed statistical model is largely omitted from food safety studies," says Park. Their methodology may serve as a useful template for future investigations of contamination on farms, he says.

"Because produce is commonly consumed raw, it would be best to prevent pre-harvest contamination by food-borne pathogens all together or at least to reduce it," says Park.


'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
(Date:4/5/2017)... 2017 KEY FINDINGS The global ... a CAGR of 25.76% during the forecast period of ... factor for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is ... geography. The stem cell market of the product is ...
(Date:3/30/2017)... The research team of The Hong Kong Polytechnic University (PolyU) ... ground breaking 3D fingerprint minutiae recovery and matching technology, pushing contactless ... use in identification, crime investigation, immigration control, security of access and ... ... A research team led by Dr Ajay Kumar ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 ... London (ICR) and University of ... prognostic tool to risk-stratify patients with multiple myeloma (MM), in ... nine . The University of Leeds ... by Myeloma UK, and ICR will perform the testing services ...
(Date:10/11/2017)... TX (PRWEB) , ... October 11, 2017 , ... ... August compared the implantation and pregnancy rates in frozen and fresh in ... contribution of progesterone and maternal age to IVF success. , After comparing the ...
(Date:10/10/2017)... ... ... San Diego-based team building and cooking events company, Lajollacooks4u, has unveiled a ... new look is part of a transformation to increase awareness, appeal to new markets ... It will also expand its service offering from its signature gourmet cooking classes and ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... ... Science Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of ... award for Excellence in Volunteer Experience from US2020. , US2020’s mission is to ...
Breaking Biology Technology: