Provisional scaffold. This page was created automatically on 2026-05-20 so that an ingested source could route to it. Aliases, category, and the contamination profile have not yet been populated. Content below is minimal until a synthesis pass consolidates the literature for this ingredient.
Reason: heal-gaps: routing_unresolved entry from source jackson2012-arsenic-organic-foods-brown-rice-syrup declared ingredient/cereal-bars, no close-slug match
Triggering source: Arsenic, Organic Foods, and Brown Rice Syrup
Literature scope
Reported measurements from source notes are below. No typical or upper-tail value is calculated here, and no certification limit is stated. The contamination profile in the page frontmatter is unchanged.
Reported measurements
The 2015 note reports 72 commercial gluten-free cereal bars, in ug/kg. Apple (n = 9): total arsenic 27.8 +/- 1.3, cadmium 0.4 +/- 0.1, lead 9.5 +/- 0.7. Blueberry (n = 12): total arsenic 12.3 +/- 1.1, cadmium below 0.3, lead 33.2 +/- 2.2. Chocolate (n = 6): total arsenic 17.4 +/- 0.9, cadmium 16.8 +/- 0.1, lead 15.8 +/- 4.2. Coconut (n = 6): total arsenic 10.5 +/- 1.2, cadmium 4.3 +/- 0.1, lead 13.7 +/- 1.1. Honey (n = 6): total arsenic 6.5 +/- 1.5, cadmium below 0.3, lead 145.3 +/- 10.8. Peach (n = 12): total arsenic 14.6 +/- 2.1, cadmium below 0.3, lead 12.4 +/- 0.5. Peanut (n = 9): total arsenic 7.8 +/- 0.8, cadmium 1.7 +/- 0.2, lead 29.9 +/- 3.6. Strawberry (n = 6): total arsenic 12.2 +/- 1.1, cadmium below 0.3, lead 10.5 +/- 1.1. Vanilla (n = 6): total arsenic 10.5 +/- 1.2, cadmium below 0.3, lead 58.7 +/- 3.6. Method detection limits were 2.5 ug/kg for arsenic, 0.3 ug/kg for cadmium, and 1.6 ug/kg for lead. Arsenic in the note is total arsenic. Inorganic arsenic is not measured. A daily-intake percent is not a bar concentration and is not repeated here. Groups are flavors, not brand names. Toxic Trace Element Contents in Gluten-free Cereal Bars Marketed in Argentina
Cereal bars and gut studies of lead, cadmium, and arsenic
Cereal bars on this page are reported with lead, cadmium, and total arsenic. Those are ingredient or product chemistry results. The gut papers below are a childhood lead cohort, a mouse drinking-water cadmium study, and a mouse drinking-water arsenic study. A bar brand can cite the model and the direction. It cannot cite a microbiome endpoint for the bar.
Sitarik et al. 2020 measured tooth lead and stool microbiota at 1 month and 6 months in 146 maternal-child pairs in the Detroit-area WHEALS cohort. In utero tooth lead was associated with fungal community composition at 1 month. Lead was not associated with overall bacterial community structure. Taxon-level bacterial shifts were higher Collinsella at 1 month, higher Bilophila at 6 months, and lower Bacteroides. The direction is lead exposure toward microbiota composition. Tooth lead is a biomarker, not a concentration in this ingredient.
Zhang et al. 2015, per WikiBiome source summary, DOI 10.1021/acs.chemrestox.5b00237, gave mice 10 mg/L cadmium in drinking water for 10 weeks. Firmicutes and gamma-proteobacteria decreased in feces after 4 weeks, and Firmicutes decreased in cecum contents after 10 weeks. The direction is cadmium toward gut microbiota, alongside hepatic energy-metabolism changes in the same animals. The summary does not name a food.
Lu et al. 2014, per WikiBiome source summary, DOI 10.1289/ehp.1307429, reported that 10 ppm arsenic in drinking water for 4 weeks perturbed gut microbiome composition in C57BL/6 mice and perturbed gut-microflora-related metabolites. The recorded abstract does not name the arsenic species. The direction is arsenic toward microbiota and metabolites. The summary does not support an arsenic concentration in this ingredient.
Study table
| Study | Model | Metal and dose | Main finding | Limitation |
|---|---|---|---|---|
| Sitarik et al. 2020 | Human infants; tooth lead and stool; n = 146 | Lead; tooth biomarker, not a food dose | Fungal composition at 1 month shifted; overall bacterial structure did not | Not this ingredient |
| Zhang et al. 2015 | Mice; drinking water; 10 weeks | Cadmium; 10 mg/L | Lower fecal Firmicutes and gamma-proteobacteria by 4 weeks | Per WikiBiome source summary; not this ingredient |
| Lu et al. 2014 | Mice; drinking water; 4 weeks | Arsenic; 10 ppm; species not named in the recorded abstract | Microbiome composition and related metabolites perturbed | Per WikiBiome source summary; not this ingredient |
What remains uncertain
The arsenic abstract recorded on the source page does not name inorganic versus total arsenic, so it should not be lined up with a speciated bar result without that check. None of the three studies used a cereal bar, an oat binder, or a snack matrix.
FDA TDS FY2018–FY2020 source observations
FDA measured the prepared foods named below. Each row describes that food and preparation, not every form of this ingredient. Values are µg/kg (ppb) on the FDA sample basis. ND means not detected; it is not a measured zero. Reporting limits can vary between composites. FY2018-FY2020 TDS Elements Analytical Results
| FDA food and preparation | Analyte | Composites | Detected | Detected concentrations (ppb) | Reporting limits (ppb) |
|---|---|---|---|---|---|
| 523: Granola bar | tAs | 3 | 3 | 17–28 | 3 |
| 523: Granola bar | Cd | 3 | 3 | 7–11 | 1 |
| 523: Granola bar | Cr | 3 | 0 | ND in all composites | 50 |
| 523: Granola bar | Pb | 3 | 0 | ND in all composites | 4 |
| 523: Granola bar | tHg | 3 | 0 | ND in all composites | 1 |
| 523: Granola bar | Ni | 3 | 3 | 930–1300 | 40 |
| 523: Granola bar | U | 3 | 0 | ND in all composites | 1 |
References
Works cited in this page’s text, in first-appearance order. See Sources for this page’s source inventory. Each title links to a source record with bibliographic details, reported findings, and document provenance.
- Arsenic, Organic Foods, and Brown Rice SyrupPeer-reviewed
- Toxic Trace Element Contents in Gluten-free Cereal Bars Marketed in ArgentinaPeer-reviewed
- Fetal and early postnatal lead exposure measured in teeth associates with infant gut microbiotaPeer-reviewed
- Subchronic Exposure of Mice to Cadmium Perturbs Their Hepatic Energy Metabolism and Gut MicrobiomePeer-reviewed
- Arsenic Exposure Perturbs the Gut Microbiome and Its Metabolic Profile in Mice: An Integrated Metagenomics and Metabolomics AnalysisPeer-reviewed
- FY2018-FY2020 TDS Elements Analytical ResultsDataset
Sources
Sources catalogued for this page. The last column says how each source is used here.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | FDA 2022. FY2018-FY2020 TDS Elements Analytical Results, FDA Total Diet Study | 2022 | Government dataset | US-FDA Pb, Cd, tAs, iAs, tHg, Ni, Cr, U, Sb occurrence in 3276 prepared food, beverage and water composites across 307 TDS foods, FY2018-FY2020 US collections (n=3276) |
| 2 | Hidalgo et al. 2015. Toxic Trace Element Contents in Gluten-free Cereal Bars Marketed in Argentina, International Journal of Celiac Disease 3(1):12-16 | 2015 | Peer-reviewed | AR tAs, Cd, Pb occurrence in Seventy-two commercial gluten-free cereal bars marketed in Argentina, grouped by flavor/main formulation into apple, blueberry, chocolate, coconut, honey,… (n=72) |
Page history
The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
Update history
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