Meli 2024 — Chemical Characterization Of Baby Food Consumed In Italy
Summary
This peer-reviewed analytical study measured 30 elements in 25 European baby foods consumed in Italy, including powdered milk, cream of rice, fruit, fish, meat, and cheese homogenized foods. It is useful for Category 1 because it includes several HMTc analytes and product forms, but it reports total arsenic rather than inorganic arsenic and total mercury rather than methylmercury.
Key numbers
- The study analyzed 25 foods consumed by children aged 0-6 months and produced in Europe.
- Sample categories included powdered milk, cream of rice, and homogenized foods made with fruit, fish, meat, and cheese.
- The analytical panel included aluminum, arsenic, cadmium, lead, mercury, nickel, and tin.
- Cadmium and lead were below the study LOD in all samples.
- Mercury and antimony were detectable in 100% of samples; tin was detectable in 68%, aluminum in 36%, nickel in 16%, and arsenic in 12%.
- The authors reported that arsenic was measured as total arsenic, not inorganic arsenic.
- The study reported that sample 7, a powdered milk sample, had the highest estimated daily intake for nickel at 9.43 ug/kg body weight per day.
- The study reported that sample 16, a salmon homogenized food, had the highest estimated daily intake for arsenic at 0.143 ug/kg body weight per day.
- The study reported that sample 20, an apple homogenized food, had the highest estimated daily intake for aluminum at 13.1 ug/kg body weight per day.
- The study reported that sample 24, a cereal-cream/grain product, had the highest estimated daily intake for mercury at 0.573 ug/kg body weight per day, approximately equal to the daily risk estimator derived by the authors from the mercury PTWI.
Evidence Fitness
This is modeled or limited evidence for HMTc purposes. It can support small-sample, product-scope occurrence and exposure context for powdered milk, fruit homogenized foods, meat foods, fish foods, and cereal-cream/grain products. It should not be used as a threshold-setting dataset, a brand ranking, or an ingredient-only contamination profile.
Methods (brief)
Samples were purchased from major supermarket chains. Homogenized foods were freeze-dried before analysis. Elements were measured using ICP-AES, ICP-MS, and mercury-specific atomic absorption methods. The paper reports element-specific LODs and LOQs in mg/kg wet weight.
Limitations
The sample size is small and European/Italian market-specific. The paper does not split powdered milk by soy versus non-soy, does not resolve ready-to-feed liquid formula, does not speciate arsenic into inorganic arsenic, and does not speciate mercury into methylmercury. Chromium is reported as total chromium, not hexavalent chromium. The paper’s mercury exposure discussion is useful for flagging the cereal-cream/grain product matrix, but it is not a direct regulatory exceedance table.
Implications
- Certification: Useful as a small analytical dataset for formula powder, homogenized fruit/meat/fish foods, and rice cereal, but not sufficient for HMTc thresholds.
- Courses: Useful teaching example for method differences and why total arsenic/total mercury cannot automatically be treated as iAs/MeHg.
- App: Supports cautious row-level evidence tagging for powdered milk, fruit homogenized foods, meat foods, fish foods, and cereal-cream/grain products; does not populate ingredient
contamination_profilefields because the values are finished-product values. - Microbiome: No direct microbiome endpoint.
Provenance notes
The raw PDF is held locally under raw/studies/ and the machine-generated markdown used for extraction is held under raw/markdown/. The PLOS ONE article is open access under a Creative Commons Attribution License (CC-BY-4.0). SHA-256 for the local raw PDF: 1ffb3e4aa1afc3d7dccb06c16412d07609ad8b3b759ee8352263d6711a16fea6.