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231224s2013 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2013.335
|2 doi
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|a eng
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|a Seidu, Razak
|e verfasserin
|4 aut
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|a Modeling the die-off of E. coli and Ascaris in wastewater-irrigated vegetables
|b implications for microbial health risk reduction associated with irrigation cessation
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 14.01.2014
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|a Date Revised 09.01.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a This study assessed the die-off of Escherichia coli (E. coli) and Ascaris suum on lettuce (Great Lakes 118) and cabbage (Brassica oleracea var capitata) in wastewater-irrigated fields using comparative mathematical die-off models. The study revealed that none of the survival curves of E. coli and A. suum was best fitted with the log-linear model, indicating that the classical first-order kinetic approach is inadequate in many cases. The biphasic die-off model best described the die-off of E. coli on lettuce (kmax1 = 2.62 day(-1) and kmax2 = 0.22 day(-1)) and cabbage (kmax1 = 1.06 day(-1) and kmax2 = 0.53 day(-1)). The die-off of A. suum on lettuce was best described by the biphasic model (kmax1 = 0.48 day(-1) and kmax2 = 0.01 day(-1)) and best described by log linear + tail (kmax = 0.44) on cabbage. A comparative health risk assessment associated with the consumption of lettuce showed significant underestimation of the number of days of irrigation cessation required to achieve E. coli O157:H7 and Ascaris tolerable annual infection risk when using biphasic die-off rates compared with other die-off rates. The study stresses the need to test different die-off models as inputs for quantitative microbial risk assessment (QMRA) particularly for interventions associated with health risk reduction
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Sjølander, Ingrid
|e verfasserin
|4 aut
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|a Abubakari, Amina
|e verfasserin
|4 aut
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|a Amoah, Dennis
|e verfasserin
|4 aut
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|a Larbi, John A
|e verfasserin
|4 aut
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|a Stenström, Thor Axel
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 68(2013), 5 vom: 15., Seite 1013-21
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:68
|g year:2013
|g number:5
|g day:15
|g pages:1013-21
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|u http://dx.doi.org/10.2166/wst.2013.335
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