Rice Flour
Completeness scorecard
Deterministic gap audit — no score is composite, no cell is LLM-judged. Each chip is re-derivable by re-running tools/evidence/build-ingredient-scorecard.mjs. review: residuals and missing data are worked autonomously via data/evidence/ingredient-scorecard-review-flags.csv and wiki/completeness-gaps.md.
| Dimension | Status | What’s there (auditable counts) | What’s missing |
|---|---|---|---|
| D1 Analyte coverage (tier: unset) | GAP | 2/10 HMTc analytes, total n=4 | only 2/10 analytes have evidence |
| D2 Regional coverage | OK | 6 jurisdictions, top US 43% | — |
| D3 Anthropogenic evidence | GAP | no upstream/attribution sources | link a supply-chain/ hub page |
| D4 Background mechanism | GAP | section present, 0 drivers, 0 upstream source(s) | drivers[] empty; no upstream source to substantiate |
| D5 Pooling depth | THIN | Pb THIN, iAs THIN | Pb: needs 1 more study(ies); iAs: needs 1 more study(ies) |
| D6 Speciation | OK | iAs, tHg, tAs declared | — |
| D7 Basis declaration | GAP | 0/10 populated cells declare a basis token | 10 populated cell(s) lack a basis token: Pb, Cd, iAs, tHg, Ni, Al, Cr, Sn, tAs, U |
| D8 Provenance integrity | GAP | 9 claims checked, 9 supported; 6 citations, 0 orphan, 1 foreign | 1 foreign citation(s) not naming rice-flour: codex-cxs-193-1995 |
| D9 Mitigation | OK | 1 cited lever(s), 6 mitigation/ link(s) | — |
| D10 Regulatory coverage | OK | 3 rule link(s), 0 metal(s) covered | unmapped analytes: Pb, iAs |
| D11 Standards-readiness | NOT-READY | priority: Pb, iAs; pairing 0 paired, 2 single, 0 unpaired | Pb: THIN, needs 1 more study(ies); iAs: THIN, needs 1 more study(ies); basis: 10 populated cell(s) lack a basis token: Pb, Cd, iAs, tHg, Ni, Al, Cr, Sn, tAs, U; consumption tier unset (depth bar uncheckable) |
| Principle balance | flag | consumer-protection 0.50, contamination-reduction 1.00, brand-value 0.00, legal-defensibility 0.50, scale 0.25 | spread 1.00 — starved: brand-value |
This is a structural ingredient node created so product pages can link to a real wiki target. Occurrence values remain pending until a source is promoted for this ingredient.
Heavy metal contamination profile
Per-analyte snapshot derived from the machine-readable contamination_profile in the frontmatter above. data gap indicates the literature has been reviewed for this commodity-analyte combination and no usable occurrence data was found (a finding, not a placeholder). The Key sources column shows the top 2-3 contributing sources by year and sample size, with numbered wikilink aliases.
| Analyte | Coverage | Typical (ppb) | p95 (ppb) | Confidence | Key sources |
|---|---|---|---|---|---|
| Pb | n=2 | 5–30 | — | low | 1, 2 |
| Cd | data gap | — | — | — | — |
| iAs | n=2 | 60–180 | — | low | 1, 2 |
| tAs | data gap | — | — | — | — |
| tHg | data gap | — | — | — | — |
| Ni | data gap | — | — | — | — |
| Al | data gap | — | — | — | — |
| Cr | data gap | — | — | — | — |
| Sn | data gap | — | — | — | — |
| U | data gap | — | — | — | — |
Routing
This node is linked from baby-cereals-dry-rice-based, mixed-meals-rice-containing, teething-and-snacks-rice-based.
Contamination Profile State
The machine-readable contamination profile is pending. Ingredient-level values belong here once parsed; finished-product values belong on the relevant product-category page.
Sources
Auto-generated from source-page frontmatter. The “Used on this page for” column is populated by the orchestrator’s POPULATE-SOURCE-LEGEND action; pending entries appear as *[awaiting synthesis]*.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Navaretnam et al. 2025. Arsenic speciation using HPLC-ICP-MS in white and brown rice and health risk assessment, Environmental Geochemistry and Health | 2025 | Peer-reviewed | iAs and tAs speciation by HPLC-ICP-MS in white and brown rice with EU husked- and polished-rice limit exceedances |
| 2 | FDA 2025. Action Levels for Lead in Processed Food Intended for Babies and Young Children: Guidance for Industry, U.S. Department of Health and Human Services, Food and Drug Administration, Human Foods Program | 2025 | Government guidance | FDA Closer to Zero final guidance setting 20 ppb Pb action level for dry infant cereals made with rice flour; applicable Pb regulatory ceiling for rice-flour-based products |
| 3 | Song et al. 2024. Development of a Fast Method Using Inductively Coupled Plasma Mass Spectrometry Coupled with High-Performance Liquid Chromatography and Exploration of the Reduction Mechanism of Cr(VI) in Foods, Toxics 12(5): 325 | 2024 | Peer-reviewed | HPLC-ICP-MS Cr-VI speciation method validated on rice flour with Cr-VI not detected and rapid conversion to Cr-III in food matrices |
| 4 | Gacal et al. 2023. Cadmium and lead content in gluten and gluten-free bread available on Polish market - potential health risk to consumers, Annales Academiae Medicae Silesiensis | 2023 | Peer-reviewed | Cd and Pb in gluten-free Polish bread made with rice or maize flour, providing rice-flour-based finished-product distribution evidence |
| 5 | U.S. House of Representatives, 2021. Baby Foods Are Tainted with Dangerous Levels of Arsenic, Lead, Cadmium, and Mercury, Staff Report | 2021 | Gray literature | US iAs, tAs, Pb, Cd, tHg occurrence in Internal company testing records (ingredient pre-shipment tests and finished-product tests) subpoenaed from seven major US baby-food manufacturers covering… |
| 6 | Editor 2019. Manganese Levels in Infant Formula and Young Child Nutritional Beverages in the United States and France, Unknown | 2019 | Journal article | US/FR Mn occurrence in Commercial infant formulas and nutritional beverages marketed in the United States and France (n=Unknown) |
| 7 | Costa 2018. Especiacao quimica de arsenio em amostras de arroz empregando extracao por fase solida in-situ e determinacao por FI-HG AAS, Tese de Doutorado, Universidade Federal de Uberlandia | 2018 | Thesis | BR tAs, iAs occurrence in IRMM-804 Rice Flour certified reference material used for validation of an arsenic speciation method (n=1) |
| 8 | Chiger et al. 2017. Effects of Inorganic Arsenic in Infant Rice Cereal on Children’s Neurodevelopment, Abt Associates report prepared for Healthy Babies Bright Futures | 2017 | Agency report | Modeled IQ-loss and benefit-cost analysis of reducing iAs in rice-flour-based infant cereal |
Why this commodity accumulates heavy metals
Rice flour is the milled-and-ground form of rice (Oryza sativa) used as a primary ingredient in gluten-free baking, infant rice cereal (rice-cereal), rice-containing infant mixed meals, teething-and-snacks products, and Asian noodle and pastry formulations. Rice flour inherits the source rice heavy-metal profile and concentrates per-mass metal load slightly via moisture removal during milling (raw rice at ≈14% moisture is milled and dried to ≈10-12% moisture). The dominant analyte concern for rice flour is inorganic arsenic at 60-180 ppb typical, inherited from the flooded-paddy cultivation pathway documented in detail on the rice and rice cereal pages. The HPLC-ICP-MS speciation work by Navaretnam 2025 documents the white-rice vs brown-rice iAs split that propagates into the corresponding rice-flour fractions.
Lead in rice flour at 5-30 ppb typical comes from source-rice inheritance plus modest contribution from milling-equipment contact in older infrastructure. The FDA Closer to Zero baby-food Pb action level (FDA 2025) at 20 ppb for dry infant cereals made with rice flour is the operative US regulatory anchor. The Gacal 2023 Polish gluten-free bread survey documents Pb in rice-flour-based bread products. The HMTc panel concerns for rice flour are iAs (dominant), Pb (secondary), and Cd (likely present but not yet quantified in this evidence base).
Ranges by source, region, and variety
Variance within rice flour tracks source-rice origin (US southern long-grain, California medium-grain, Indian Basmati, Pakistani Basmati, Thai jasmine — each carrying different iAs baselines per Navaretnam 2025 and the broader rice corpus), milling fraction (white-rice flour vs brown-rice flour: brown-rice flour carries the bran fraction and substantially higher iAs), and downstream sourcing (organic vs conventional rice flour does not appreciably differ on iAs because organic certification does not address soil arsenic). The Chiger 2017 HBBF rice-cereal report quantifies the iAs neurodevelopmental risk in the infant-feeding context, which extends to rice-flour-based products generally.
Processing effects
Rice flour manufacturing is a relatively simple milling-and-grinding operation that does not introduce or remove metals appreciably. White-rice flour production removes the bran fraction (where iAs concentrates), substantially reducing per-mass iAs relative to brown-rice flour. Per Song 2024, cooking and processing can reduce Cr(VI) in food matrices through reduction to Cr(III); this applies to downstream cooked products containing rice flour. Rice flour incorporated into bread, baked goods, and infant cereal carries the per-mass profile of the milled rice flour adjusted for the inclusion rate in the finished product.
Ingredient-derivative risk
Rice flour routes into three primary product-row families: baby-cereals-dry-rice-based (the primary high-stakes route given infant-feeding frequency); mixed-meals-rice-containing (rice-flour incorporated into wet-pouch infant foods); and teething-and-snacks-rice-based (rice puffs, rice-flour-based teething wafers, rice-based crackers). Each downstream product format inherits the rice-flour iAs at a dilution determined by inclusion rate. Rice flour is also the primary base for many gluten-free bread products per Gacal 2023, where it dominates the per-product Pb/Cd profile in the gluten-free formulation.
Mitigation options
Sourcing levers (supply-chain-screening) are the dominant intervention. Rice-origin specification favoring lower-iAs growing regions (California, India Basmati, Pakistan Basmati relative to US southern long-grain); milling-fraction specification (white-rice flour for lower iAs; brown-rice flour where the bran is nutritionally desired but iAs trade-off is accepted); supplier-soil verification at the rice-cultivation source; and contractual iAs ceiling specification for incoming rice-flour lots.
Agronomic levers (agronomic) operate at the rice-cultivation stage; see rice for soil-management, water-regime modification (alternate wetting and drying), and cultivar-selection interventions that reduce grain iAs by 30-50%.
Processing levers (processing) include polishing during the rice-to-flour milling stage (white-rice-flour production removes the iAs-concentrating bran fraction). Stainless-steel-only milling equipment minimizes any equipment-contact metal pickup.
Formulation levers (formulation) include partial substitution of rice flour with non-rice gluten-free flours (corn flour, quinoa flour, sorghum flour, millet flour, almond flour, coconut flour) in gluten-free baking and infant-cereal formulations to proportionally dilute iAs load.
Testing and QC levers (testing-and-qc) are mature: lot-level iAs testing on incoming rice-flour supply against the FDA CTZ infant-rice-cereal 100 ppb action level (or against tighter brand internal specifications). HPLC-ICP-MS speciation is the operative analytical platform per Navaretnam 2025.
Packaging and storage levers (packaging-and-storage) are limited; the iAs and Pb loads are in the flour itself. Standard storage-condition specifications apply to maintain flour quality.
Regulatory limits that apply
- fda2020-inorganic-arsenic-infant-rice-cereal — FDA Closer to Zero action level of 100 ppb iAs for infant rice cereal (dry weight basis) applies to rice-flour-based infant cereal formulations.
- FDA Closer to Zero baby-food Pb action level per FDA 2025: 20 ppb for dry infant cereal applies to rice-flour-based infant cereals.
- eu-2023-915 — EU Reg. 2023/915 sets binding maximum levels for infant-and-young-child cereal-based food: iAs 50 ppb (dry weight) for rice-based cereal products.
- Codex CXS 193-1995 — Codex maximum level for iAs in polished rice (200 ppb) provides the upstream regulatory anchor; per-flour limits operate one step downstream and align with the per-cereal-product limits above.
- California Prop 65 (california-prop65) Pb MADL applies to rice-flour-based products sold in California.
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.
| Commit | Date | Description |
|---|---|---|
| b0f3d38 | 2026-06-12 | batch | corpus rescreen b04 old terminal skips |