Occurrence of pathogens on vegetables harvested from soils irrigated with contaminated streams

Okafo, Cordelia Ngozi; Umoh, V. J.; Galadima, M

doi:10.1016/s0048-9697(03)00057-3

Cited by 60 publications

(35 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The survival of microorganisms is often lower in plants than in the soil, because in plants they are inactivated by sunlight, desiccation, temperature, and antimicrobial agents produced by the plant (Okafo et al 2003).…”

Section: Assessment Of Indicators Of Fecal Contamination In Soils Trementioning

confidence: 99%

See 1 more Smart Citation

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

et al. 2015

View full text Add to dashboard Cite

Developing countries currently face challenges related to the management and disposal of biosolids that result from wastewater treatment. One of the most important issues they must deal with involves the maximum level of pathogens permitted and the effect they may have on the environment and human health once they are used for agricultural purposes. In order to learn about the risk generated by these kinds of practices, we assessed the behavior of indicators of fecal contamination in grasses used to feed dairy cattle. The study area was divided into two plots: an experimental plot in which diluted biosolids were applied and a control plot without the application of biosolids. We collected samples from soil, grass, surface water and groundwater and analyzed the presence of fecal coliforms, Salmonella, somatic phages and helminth eggs. Experimental and control plots showed a decrease in the concentration of bacterial indicators assessed in soil, and low concentrations in surface water, groundwater and grass. Concentrations of viral and parasite indicators tend to decrease more slowly. Our results show that this way of biosolid management allows a better use of its benefits as an organic amendment by lowering the sanitary risk due to the presence of pathogens.

show abstract

Section: Assessment Of Indicators Of Fecal Contamination In Soils Trementioning

confidence: 99%

“…When pathogens reach a plant's surface they come into contact with organic acids and other natural antimicrobial substances present in the fluids of plant tissues. However, when cell breakage is caused by mosquitoes or other insects, infection is favored (Okafo et al 2003).…”

Section: Grassesmentioning

confidence: 99%

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Some restaurants use local mayonnaise to season the sandwiches. Shawarma sandwiches are similar to donairs, and such types of foods are subjected to contamination with pathogens during preparation, processing, and serving [7]. These foods are manipulated extensively during processing and therefore have a potential for high bacterial contamination levels on the surface of the meat, as well as the inside.…”

Section: Introductionmentioning

confidence: 99%

Foodborne bacterial pathogens recovered from contaminated shawarma meat in northern Jordan

Nimri

Al-Dahab

Batchoun

2014

J Infect Dev Ctries

View full text Add to dashboard Cite

Introduction: The purpose of the study was to isolate, identify, and determine the antimicrobial resistance of the bacterial pathogens recovered from shawarma (donair) sandwiches served to the public in Jordan. Methodology: Bacterial contamination of 100 shawarma sandwiches with pathogenic bacteria was studied by culture on selective media, serology, PCR assay, and antimicrobial susceptibility testing. Results: One hundred and forty-five bacterial isolates were identified. The predominant species was Escherichia coli (28.3%), with six isolates of serotype O157:H7, followed by Salmonella spp. (25.5%). Higher contamination rates were found in chicken sandwiches. The majority of these bacteria expressed high resistance to several antimicrobials, especially tetracycline and streptomycin. Citrobacter freundii was isolated from 15.9% and Staphylococcus aureus was isolated from 8.3% of the sandwiches. The presence of these pathogens is of primary concern because some strains are capable of producing a heat-stable enterotoxin that causes food poisoning in humans, and should therefore be taken into account in risk assessment. Conclusions: Results signify the importance of sustained surveillance of foodborne pathogens in shawarma sandwiches to minimize the risk of contamination. Availability of data on the isolated pathogens and modes of transmission in food from different countries would provide a common ground for reaching international agreement on food safety regulations.

show abstract

“…As these highly polluted waters are used for irrigation in and around four of five cities across low-income countries, the likelihood of the transmission of excreta-related diseases to farmers and, for example, vegetable consumers is very high (RaschidSally and Jayakody 2008). The same applies to West Africa, where high levels of fecal contamination of water sources and vegetables in urban farming sites have been reported across the region (Amoah et al 2011;Okafo et al 2003;Niang 1999). …”

Section: Introductionmentioning

confidence: 83%

On-farm treatment options for wastewater, greywater and fecal sludge with special reference to West Africa

Keraita¹,

Drechsel²,

Klutse³

et al. 2014

View full text Add to dashboard Cite

Resource Recovery and Reuse (RRR) is a sub-program of the CGIAR ResearchProgram on Water, Land and Ecosystems (WLE) dedicated to applied research on the safe recovery of water, nutrients and energy from domestic and agro-industrial waste streams. This SRP aims to create impact through different lines of action research, including (i) developing and testing scalable RRR business models, (ii) assessing and mitigating risks from RRR for public health and the environment, (iii) supporting public and private entities with innovative approaches for the safe reuse of wastewater and organic waste, and (iv) improving rural-urban linkages and resource allocations while minimizing the negative urban footprint on the peri-urban environment. This sub-program works closely with the World Health Organization (WHO), Food and Agriculture Organization of the United Nations (FAO), United Nations Environment Programme (UNEP), United Nations University (UNU), and many national and international partners across the globe. The RRR series of documents present summaries and reviews of the sub-program's research and resulting application guidelines, targeting development experts and others in the research for development continuum.Science with a human face WLE Partners:

show abstract

Occurrence of pathogens on vegetables harvested from soils irrigated with contaminated streams

Cited by 60 publications

References 11 publications

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

Foodborne bacterial pathogens recovered from contaminated shawarma meat in northern Jordan

On-farm treatment options for wastewater, greywater and fecal sludge with special reference to West Africa

Contact Info

Product

Resources

About

Occurrence of pathogens on vegetables harvested from soils irrigated with contaminated streams

Cited by 60 publications

References 11 publications

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses

Foodborne bacterial pathogens recovered from contaminated shawarma meat in northern Jordan

On-farm treatment options for wastewater, greywater and fecal sludge with special ref­erence to West Africa

Contact Info

Product

Resources

About

On-farm treatment options for wastewater, greywater and fecal sludge with special reference to West Africa