Exposure Assessment Tools

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20 record(s) found




ID Author(s) Title / Description Publication Year
10723 John Howlett, Neil Buck, Matthew Buck, Jeanne H. M. de Vries, Veronika Ehrlich, Melody Hove, Astrid G. Kruizinga, Pratima R. Jasti, Benjamin Smith, David Tennant

GUIDEA-Guidance for Dietary Intake and Exposure Assessment-A New Resource for Exposure Assessment Professionals
GUIDEA-Guidance for Dietary Intake and Exposure Assessment-A New Resource for Exposure Assessment Professionals
URL: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=28758

Exposure assessment is a key component of any risk-benefit assessment, yet it is clear that there is a lack of reliable methodology in this area for assessing consumer exposures…

Exposure assessment is a key component of any risk-benefit assessment, yet it is clear that there is a lack of reliable methodology in this area for assessing consumer exposures to both food constituents and nonfood products. In December 2008, the ILSI Europe Food Intake Methodology task Force held a workshop to discuss the differences between different types of exposure assessments as well as the difficulties involved in the practical application of the methods available. It was noted that although no two assessments are the same in terms of data required and its availability, or the assumptions made, there is also wide and perhaps unnecessary variation between the approaches taken by different assessors. As a result, the task force initiated an activity aimed at producing a practical guide for conducting intake/exposure assessments in the form of an interactive web-based application. During the course of this work it became clear that the best form in which to present the guide would be a web-based MediaWiki-type system. A website was developed and launched in October 2012, at which time global experts and practitioners in dietary exposure assessment were invited to register to use the site and help keep the knowledge contained within it, relevant and up-to-date. It is hoped that the guide will be an important reference source for a wide group of stakeholders, providing concise guidance on the planning, conduct, reporting and interpretation of exposure assessments and contributing to greater harmonisation of the dietary intake/exposure methodologies used.

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Source: Food and Nutrition Sciences

Keywords:

dietary exposure, exposure assessment, food intake

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20130101
2013
10710 University of Georgia Center for Food Safety, University of Cordoba

MicroHibro: On-line tool of Microbial Risk Assessment in Vegetables
MicroHibro: On-line tool of Microbial Risk Assessment in Vegetables
URL: http://www.microhibro.com/

A quantitative risk assessment model was built based on potential prevalence and concentration distribution data coming off the farm and then using cross-contamination, survival, and intervention rates as key…

A quantitative risk assessment model was built based on potential prevalence and concentration distribution data coming off the farm and then using cross-contamination, survival, and intervention rates as key variables that would affect the outcome of the model.The mathematical structure of the exposure assessment model was translated into a friendly-user web-based tool which is released as a Beta version in English and Spanish. The application incorporates a module for growth predictions in different vegetable matrices and microorganisms as well as a module which allows user designing and simulating exposure models to estimate the final concentration at the moment of consumption. To access this tool, you must register a username and password by clicking the "Register here" button in the lower right-hand corner. Once registered, you will need to wait for an email from the administrator of the tool before you have access. 

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Source: University of Georgia Center for Food Safety, University of Cordoba

Keywords:

chemical concentration, cross contamination, exposure assessment, exposure models, growth models, microbial contamination, microbial growth, models, pathogen survival, prevalence, quantitative risk assessment, raw vegetables, vegetables

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20110000
2011
9440 Carrington, C.D.; Bolger, M.P.

exposure assessment for methylmercury from seafood for consumers in the United States
An exposure assessment for methylmercury from seafood for consumers in the United States
URL: http://dx.doi.org/10.1111/0272-4332.00061

An exposure model was developed to relate seafood consumption to levels of methylmercury (reported as mercury) in blood and hair in the U.S. population, and two subpopulations defined as…

An exposure model was developed to relate seafood consumption to levels of methylmercury (reported as mercury) in blood and hair in the U.S. population, and two subpopulations defined as children aged 2–5 and women aged 18–45. 

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Source: Risk Analysis, Vol. 22, No. 4, Aug. 2002, p. 689–99.

Keywords:

dietary exposure, exposure assessment, immunocompromised population, models, seafoods

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20020800
2002
9315 Nauta, M.

Microbiological risk assessment models for partitioning and mixing during food handling
Microbiological risk assessment models for partitioning and mixing during food handling
URL: http://dx.doi.org/10.1016/j.ijfoodmicro.2004.10.027

To describe the transmission dynamics of a pathogen over a food pathway in quantitative microbiological risk assessment (QMRA), several types of processes need to be modelled. Next to microbial…

To describe the transmission dynamics of a pathogen over a food pathway in quantitative microbiological risk assessment (QMRA), several types of processes need to be modelled. Next to microbial processes like bacterial growth and inactivation, four food handling processes can be identified. Among these are partitioning and mixing of the food product.  

Some examples show the effect of more realistic modelling on the prevalence and the probability distribution of the number of pathogens per unit of food product. In general, cell clustering will result in lower prevalences, but higher levels of contamination in contaminated food units. With the methods presented, these effects can be quantified. Difficulties in estimating the model parameters and the impact of implementation of the proposed methods on risk estimates in QMRA are discussed.

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Source: International Journal of Food Microbiology

Keywords:

farm to fork, food processing, methodology, microbiological risk assessment, models, quantitative risk assessment, risk assessment

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20050415
2005
9233 World Health Organization/International Programme on Chemical Safety

Risk Assessment Toolkit
Risk Assessment Toolkit
URL: http://www.who.int/ipcs/methods/harmonization/areas/ra_toolkit/en/index.html

The WHO/IPCS Risk Assessment Toolkit (RA Toolkit) project aims to make the international tools on chemical risk assessment more readily accessible, especially to relevant stakeholders in developing countries and…

The WHO/IPCS Risk Assessment Toolkit (RA Toolkit) project aims to make the international tools on chemical risk assessment more readily accessible, especially to relevant stakeholders in developing countries and countries with economies in transition.

This website includes records of the meeting introducing the pilot phase of the draft WHO Risk Assessment Toolkit in Thailand, Malaysia and China (Bangkok meeting, July 2009).

The RA Toolkit is organized into sections that provide:

-An overview of chemical RA, including the RA framework and uses of RA;

-Generic road maps for how to conduct RA;

-Listing of international resources that are useful for conducting RAs; and

-Examples of how that information can be applied to a RA question, including case-specific roadmaps.

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Source: World Health Organization

Keywords:

methodology, risk assessment

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8905 NZFSA Science Group

Modelling of Exposure of New Zealand consumers to Salmonella
Modelling of Exposure of New Zealand consumers to Salmonella
URL: http://www.foodsafety.govt.nz/elibrary/industry/Modelling_Exposure-Evaluates_Relative.pdf

The aims of this report included (i) the relative likelihood of New Zealanders becoming ill from Salmonella transmitted via food compared with Salmonella being transmitted via other pathways such…

The aims of this report included (i) the relative likelihood of New Zealanders becoming ill from Salmonella transmitted via food compared with Salmonella being transmitted via other pathways such as direct contact with animals and overseas travel and (ii) Changes in relative likelihood of foodborne salmonellosis that may eventuate from importation of poultry products from overseas according to specific import scenarios.

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Source: New Zealand Food Safety Authority

Keywords:

animal products, bacteria, biological hazards, exposure, exposure assessment, food pathogens, imports, methodology, models, poultry, poultry products, Salmonella

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20070427
2007
8860 Rodríguez, F.P., et al

mathematical risk model for Escherichia coli O157: H7 cross-contamination of lettuce during processing
A mathematical risk model for Escherichia coli O157: H7 cross-contamination of lettuce during processing
URL: http://dx.doi.org/10.1016/j.fm.2010.06.008

A stochastic simulation modelling approach was taken to determine the extent of Escherichia coli O157:H7 contamination in fresh-cut bagged lettuce leaving the processing plant. A probabilistic model was constructed…

A stochastic simulation modelling approach was taken to determine the extent of Escherichia coli O157:H7 contamination in fresh-cut bagged lettuce leaving the processing plant. A probabilistic model was constructed in Excel to account for E. coli O157:H7 cross contamination when contaminated lettuce enters the processing line.

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Source: Food Microbiology, [Epub ahead of print], Jun. 30, 2010

Keywords:

bacteria, biological hazards, cross contamination, Escherichia coli, Escherichia coli O157:H7, food pathogens, lettuce, mathematical models, methodology, models, risk assessment

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20100630
2010
8856 Ellouze, M.; Gauchi, J.; Augustin, J.

Global Sensitivity Analysis Applied to a Contamination Assessment Model of Listeria monocytogenes in Cold Smoked Salmon at Consumption
Global Sensitivity Analysis Applied to a Contamination Assessment Model of Listeria monocytogenes in Cold Smoked Salmon at Consumption
URL: http://dx.doi.org/10.1111/j.1539-6924.2010.01380.x

In this study, a variance-based global sensitivity analysis method was first applied to a contamination assessment model of Listeria monocytogenes in cold smoked vacuum packed salmon at consumption. The…

In this study, a variance-based global sensitivity analysis method was first applied to a contamination assessment model of Listeria monocytogenes in cold smoked vacuum packed salmon at consumption. The impact of the choice of the modeling approach (populational or cellular) of the primary and econdary models as well as the effect of their associated input factors on the final contamination level was investigated.

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Source: Risk Analysis, Vol. 30, No. 5, May 2010, p. 841-852

Keywords:

fish, fish products, food contamination, food intake, Listeria, Listeria monocytogenes, methodology, models, risk assessment, seafoods, shellfish, statistical analysis

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20100500
2010
7950 Sheen, S.; Hwang, C.A.

Modeling Transfer of Listeria monocytogenes from Slicer to Deli Meat During Mechanical Slicing
Modeling Transfer of Listeria monocytogenes from Slicer to Deli Meat During Mechanical Slicing
URL: http://www.liebertonline.com/doi/pdfplus/10.1089/fpd.2007.0049

In this study, transfer of L. monocytogenes from one contact surface to another for Ready-to-Eat deli meats with a delicatessen or restaurant type slicer was investigated. The objectives were…

In this study, transfer of L. monocytogenes from one contact surface to another for Ready-to-Eat deli meats with a delicatessen or restaurant type slicer was investigated. The objectives were to achieve the surface transfer model development and to predict the cross-contamination for the slicing operation. Two cross-contamination routes were studied for model development: (1) L. monocytogenes–contaminated blade to ham (Case I), and (2) L. monocytogenes–contaminated ham to blade and then to uncontaminated ham (Case II).

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Source: Foodborne Pathogens and Disease: Vol. 5 No. 2 pp. 135-146.

Keywords:

animal products, antibiotic resistance, bacteria, biological hazards, delicatessen foods, Enterobacteriaceae, Listeria, Listeria monocytogenes, meat, methodology, models, poultry, ready-to-eat foods, risk assessment

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20080400
2008
7836 Ivanek, R.; Grohn, Y.T. Wiedmann, M.; Wells, M.T.

Mathematical Model of Listeria monocytogenes Cross-Contamination in a Fish Processing Plant
Mathematical Model of Listeria monocytogenes Cross-Contamination in a Fish Processing Plant
URL: http://www.ingentaconnect.com/content/iafp/jfp/2004/00000067/00000012/art00009

This report details a mathematical simulation model describing cross contamination pathways for L. monocytogenes. A smoked fish processing plant was used for the model. The report concludes that 10.7%…

This report details a mathematical simulation model describing cross contamination pathways for L. monocytogenes. A smoked fish processing plant was used for the model. The report concludes that 10.7% of foods in a lot are contaminated, and that the most significant contributors to contamination were the frequency in which employees' gloves touched food and food surfaces, and the frequency of changing gloves. Access to the full report requires purchase.

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Source: Journal of Food Protection: Vol. 67, No. 12 pp. 2688–2697.

Keywords:

bacteria, biological hazards, fish, fish products, Listeria, Listeria monocytogenes, methodology, models, risk assessment, seafoods, shellfish, statistical models

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20041200
2004
7835 Schaffner, D.W.

Mathematical Frameworks for Modeling Listeria Cross-contamination in Food-processing Plants
Mathematical Frameworks for Modeling Listeria Cross-contamination in Food-processing Plants
URL: http://foodsci.rutgers.edu/schaffner/pdf%20files/Schaffner%20JFS%202004.pdf

This study uses Monte Carlo simulation techniques to quantitatively describe the cross-contamination of Listeria monocytogenes. Two models are presented. The first model describes the number and prevalence for four…

This study uses Monte Carlo simulation techniques to quantitatively describe the cross-contamination of Listeria monocytogenes. Two models are presented. The first model describes the number and prevalence for four different strains while the second model describes the number and prevalence for only one strain. The purpose of these models is to provide a mathematical framework for future predictive models with the ultimate goal of understanding and controlling L. monocytogenes in food-processing plants.

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Source: Journal of Food Science

Keywords:

bacteria, biological hazards, cross contamination, Listeria, Listeria monocytogenes, methodology, models, risk assessment, statistical models

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20040709
2004
4886 National Center for Environmental Assessment, Office of Research and Development, Environmental Protection Agency (EPA)

Example Exposure Scenarios
Example Exposure Scenarios
URL: http://cfpub2.epa.gov/ncea/cfm/recordisplay.cfm?deid=85843

This document presents exposure scenarios for different exposure pathways and demonstrates the application of data from the Exposure Factors Handbook in estimating exposures. For each scenario, an exposure algorithm,…

This document presents exposure scenarios for different exposure pathways and demonstrates the application of data from the Exposure Factors Handbook in estimating exposures. For each scenario, an exposure algorithm, exposure factor inputs, calculations, and exposure characterization and uncertainties are presented. Ingestion pathways described include contaminated homegrown vegetables, homegrown tomatoes, beef, dairy products, drinking water, fish, and breastmilk

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Source: National Center for Environmental Assessment, Office of Research and Development, Environmental Protection Agency

Keywords:

beef, breast milk, chemical hazards, dairy products, drinking water, exposure, exposure assessment, exposure pathways, fish, fish products, meat, poultry, seafoods, shellfish, tomatoes, vegetables

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20040400
2004
4113 Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA)/RTI International

Food Handling Practices Model (FHPM) Version 1.1
The Food Handling Practices Model (FHPM) Version 1.1
URL: http://foodrisk.org/exclusives/FHPM/

Computer simulation model for estimating the way that changes in food handling practices at the retail, foodservice, or household level may affect the incidence of food-borne illness in the…

Computer simulation model for estimating the way that changes in food handling practices at the retail, foodservice, or household level may affect the incidence of food-borne illness in the US. Downloadable files for the model, a user's guide, backgrounder, and final report are available

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Source: FoodRisk.org

Keywords:

food handling, models

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2850 Microbiological and Chemical Exposure Assessment Research Division, National Exposure Research Laboratory, Office of Research and Development, Environmental Protection Agency (EPA)

Dietary Exposure Potential Model
Dietary Exposure Potential Model
URL: http://www.epa.gov/nerlcwww/depm.htm

Model and database system for estimating dietary exposure to chemical residues. Data is included from government-sponsored national food intake surveys and chemical residue monitoring programs. The user can add…

Model and database system for estimating dietary exposure to chemical residues. Data is included from government-sponsored national food intake surveys and chemical residue monitoring programs. The user can add additional foods or chemicals and associated data, and the user can import food diaries for exposure analysis. There is also an option to include exposure from tap water

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Source: Microbiological and Chemical Exposure Assessment Research Division, National Exposure Research Laboratory, Office of Research and Development, Environmental Protection Agency

Keywords:

chemical hazards, exposure, mathematical models, simulation models

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2145 Scientific Steering Committee, Health and Consumer Protection Directorate-General, European Commission

Risk Assessment of Food Borne Bacterial Pathogens: Quantitative Methodology Relevant for Human Exposure Assessment
Risk Assessment of Food Borne Bacterial Pathogens: Quantitative Methodology Relevant for Human Exposure Assessment
URL: http://ec.europa.eu/food/fs/sc/ssc/out252_en.pdf

One report from the SSC Task Force Report on Harmonisation of Risk Assessment Procedures. It discusses methodology for quantitative exposure assessment. Topics discussed include the role of the exposure…

One report from the SSC Task Force Report on Harmonisation of Risk Assessment Procedures. It discusses methodology for quantitative exposure assessment. Topics discussed include the role of the exposure assessment in the overall process of risk analysis, model development, modeling the food chain, data sources, exposure estimates, and model validation and review. There are also several examples of exposure modeling exercises

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Source: Scientific Steering Committee, Health and Consumer Protection Directorate-General, European Commission

Keywords:

antibiotic resistance, bacteria, biological hazards, data collection, exposure assessment, food pathogens, methodology, models, program evaluation, research, risk assessment, statistical models

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20030117
2003
1811 Exponent, Inc.

FARE MicrobialTM
FARE MicrobialTM
URL: http://foodrisk.org/exclusives/faremicrobial/

Software program for conducting probabilistic microbial risk assessment. The program was developed by Exponent together with the Food and Drug Administration, and consists of a Contamination and Growth Module…

Software program for conducting probabilistic microbial risk assessment. The program was developed by Exponent together with the Food and Drug Administration, and consists of a Contamination and Growth Module and an Exposure Module. Data from the U.S. Department of Agriculture's Continuing Survey of Food Intakes by Individuals (CSFII) 1994-96, 98 are included in the program. A users manual, containing both installation and use guidelines, is provided

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Source: FoodRisk.org

Keywords:

biological hazards, computer software, exposure, food microbiology, methodology, microbiological risk assessment, predictive microbiology, quantitative risk assessment, risk assessment, simulation models, statistical models, temperature

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20020900
2002
1607 Lockheed Martin Energy Research Corporation

Improved Methods for Calculating Concentrations Used in Exposure Assessments
Improved Methods for Calculating Concentrations Used in Exposure Assessments
URL: http://rais.ornl.gov/documents/bjc_or416.pdf

This document describes macros developed for use with SAS software that provide improved methods in estimating exposure concentrations of contaminants

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Source: Risk Assessment Program, Toxicology and Risk Analysis Section, Life Sciences Division, Oak Ridge National Laboratory, Department of Energy

Keywords:

exposure assessment, food contamination, mathematical models, statistical models

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20000100
2000
1606 Bechtel Jacobs Company LLC

Empirical Models for the Uptake of Inorganic Chemicals from Soil by Plants
Empirical Models for the Uptake of Inorganic Chemicals from Soil by Plants
URL: http://www.esd.ornl.gov/programs/ecorisk/documents/bjcor-133.pdf

This report presents models on the uptake of contaminants from the soil by plants. Most of the study data is based on agricultural crop plants. Contaminants studied include arsenic,…

This report presents models on the uptake of contaminants from the soil by plants. Most of the study data is based on agricultural crop plants. Contaminants studied include arsenic, cadmium, copper, lead, mercury, nickel, selenium, and zinc

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Source: Office of State and Tribal Programs, U.S. Nuclear Regulatory Commission

Keywords:

arsenic, biological hazards, cadmium, chemical hazards, copper, exposure, exposure pathways, food contamination, lead, mathematical models, mercury, models, nickel, plant products, selenium, zinc

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19980923
1998
1560 Office of Pesticide Programs, Environmental Protection Agency (EPA)

Water Models
Water Models
URL: http://www.epa.gov/oppefed1/models/water/index.htm

Downloadable models that can be used to predict pesticide concentrations in ground and surface water. Models available are PRZM3, EXAMS II, FIRST, GENEEC2, and SCI-GROW

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Source: Office of Pesticide Programs, Environmental Protection Agency

Keywords:

exposure, pesticide residues, public water supply, simulation models

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494 Sielken and Associates Consulting, Inc.

Software at Sielken and Associates
Software at Sielken and Associates
URL: http://www.sielkenassociates.com/DesktopDefault.aspx?tabid=1199

This page features a list of six different softwares offered by Sielken and Associates, including dose-response tools, exposure tools, statistical tools, and risk communication tools, among others.

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Source: Sielken and Associates Consulting, Inc.

Keywords:

computer software, dose response, exposure models, risk communication, simulation models, statistical models

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