Measurement / residue studyindependent cross-checkabstract checked★ key study I-VEG-143 standard review
Egyptian vegetables: frequent limit exceedances, low chronic risk
Nationwide Surveillance and Cumulative Risk Assessment of Pesticide Residues in Egyptian Vegetables: Results from 2018 to 2021
Overview
Malhat F et al.. Separations 2024 · DOI 10.3390/separations11110318
Of 4,200 vegetable samples from 20 Egyptian markets (2018-2021), 13% exceeded residue limits, but estimated chronic intakes stayed below safety thresholds.
Does the study support the specific claim? Partly · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Monitor residues in Egyptian vegetables.
- How was the study done?
Market surveillance.
- How many people, animals or samples were studied?
4,200 samples.
- What was actually found?
42% with residues; 13% above MRL; EDI < ADI.
- How large was the observed effect?
13% exceedance.
- What do the results mean in everyday life?
Residue control in Egypt needs improvement, but average exposure was within safety limits.
- What are the study's limitations?
Abstract only.
- What does it say about Elawady's specific claim?
Partly supports (exceedances), limits (no chronic risk).
- Do the results apply to Germany and Europe?
Egypt-specific.
- What can explicitly not be concluded from this study?
Cannot assess acute risk or health outcomes.
Scientific in-depth review
1. Full reference
- Authors
- Malhat F et al.
- Journal
- Separations
- Year
- 2024
- Identifier
- DOI 10.3390/separations11110318
- Verification
- verified – Crossref record and abstract fetched 2026-10-26 (publisher page HTTP 403; not indexed in PubMed)
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in Crossref abstract
2. Research question
What pesticide residues occur in vegetables sold in Egyptian markets, and do they pose a chronic dietary risk?
3. Study design and population
- Study design
- Measurement / residue study – Market surveillance (LC-MS/MS, GC-MS/MS) with dietary exposure assessment
- Population
Vegetable samples (cucumber, squash, eggplant, okra, peas, onion, green onion, parsley, lettuce, cantaloupe)
- Country
Egypt (20 markets across governorates)
- Period
2018-2021
- Sample size
4,200 samples
- Inclusion and exclusion criteria
not stated in abstract
4. Methods and endpoints
- Exposure / intervention
Pesticide residues
- Comparator
Codex/EU MRLs; ADI
- Endpoints
Detection, MRL exceedance, estimated daily intake
- Statistical methods
Descriptive; EDI vs ADI
5. Actual results
- Results
42% of samples contained residues; 13% exceeded Codex/EU MRLs; estimated daily intake of detected pesticides did not exceed ADIs, suggesting no immediate chronic health risk.
- Absolute risks
not reported
- Authors' conclusion
No immediate chronic risk; continued monitoring and sustainable practices needed.
6. Strengths
- Nationwide, multi-year, 4,200 samples
- Modern multi-residue methods
7. Weaknesses
- Abstract only
- Acute risk and banned-compound details not in abstract
- Authors from national residue laboratory (possible institutional interest)
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Sampling design and acute exposure not described in abstract.
9. Assessment of the statistical interpretation
Exceedance proportion only; no CIs.
10. Relevance to the specific claim
Most recent nationwide Egyptian data: frequent MRL exceedances (13%) but chronic intakes below ADI.
11. Independent contrary findings
El-Sheikh 2022 (Sharkia) estimated risks for some combinations.
12. Transferability to Germany and Europe
Egypt-specific; EU exceedance rate ~2%.
13. Overall methodological judgement
Confirms residue problems in Egyptian vegetables more than in the EU, but does not show harmful chronic exposure.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | not applicable |
| Directness | direct |
| Reproducibility | partly replicated |
| Consistency with the overall evidence | mixed |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Acute risk; banned compounds; domestic enforcement.
15. Linked fact checks
- In Egypt, vegetables carry pesticide residues, including internationally banned pesticides, at levels that can be harmful. – Studies contradicting or limiting the claim