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Dietary Exposure Assessment, image - Coggle Diagram
Dietary Exposure Assessment
Definition
process of estimating how much of a food chemical a population, or population sub group, consumes
estimated by combining food consumption data with food chemical concentration data
compared with the relevant health-based guidance value for the food chemical of concern
Types
:
Chronic:
covers average daily exposure over the entire lifetime
Acute:
covers a period of 24 h exposure
only small proportion of commodity entering the food chain is monitored
Methodologies
probabilistic
Although gives a better estimate, it would not necessarily give lower dietary exposure estimate than deterministic; used for higher tier assessments
semi-probabilistic
A combination method of deterministic and probabilistic
deterministic
A single value describing some parameters of consumer exposure (average exposure of a population); result simple to communicate
Formula/calculation
RISK ASSESSMENT FOR PESTICIDE RESIDUES (ACETAMIPRID) IN GREEN PEPPER
Golge, Ozgur & Hepsag, Fatma & Kabak, Bulent. (2018). Health risk assessment of selected pesticide residues in green pepper and cucumber. Food and Chemical Toxicology. 121. 10.1016/j.fct.2018.08.027.
The consumption data for the Turkish population is obtained from the food balance sheet of Turkish Statistical Institute (TUIK, 2014). According to that report, the mean consumptions of green peppers is 23.4 kg (i.e. 0.06 kg/day/person) per year. The dietary exposure was calculated for both the consumer groups of adults (aged above 18 years) and children (3-10 years old). For dietary exposure assessment, a body weight of 70 kg for adults (aged above 18 years) and 23 kg for children (aged 3-10 years) have been recommended by EFSA (EFSA, 2012).
https://docs.google.com/spreadsheets/d/1-tS6xgeDBthCmf448jgCig3079smOf0_bgTO5yBeZPg/edit#gid=1403880203
Reference Health Standard for different chemical
Purpose of conducting
developing risk assessments for food chemicals
provides the scientific basis for the establishment of
standards, guidelines and other recommendations of the CAC
ensures that safety requirements for food are protective of public health, consistent between countries and appropriate for use in international trade
Uncertainty and variability
Uncertainty
corresponds to the assessor’s level of knowledge
about the data sets.
can be decreased as the quantity and/or quality of
the information available improves
refers to limitations in the knowledge of the exposure assessor about the data sets used
Variability
characteristic of both the concentration data and the food intake by members of the population studied
can be improved by better information, but it cannot be eliminated.
