Quinoa

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.

Quinoa is a pseudocereal indigenous to the Andean highlands of Peru, Bolivia, and Ecuador. It is botanically distinct from true cereals (Poaceae) but functions as a grain in human diets and is regulated alongside cereals in most jurisdictions. The heavy-metal contamination signal for quinoa is dominated by cadmium, which it accumulates from Andean soils whose geochemistry is shaped by the same mining-belt minerology that drives Cd in regional cacao (see cocoa for the parallel pattern). Lead and arsenic are secondary concerns, primarily in samples sourced from mining-impacted watersheds (Moquegua, Huancavelica, certain altiplano basins).

The growing global popularity of quinoa as a gluten-free pseudocereal in infant and child foods, energy bars, and breakfast products makes its contamination profile increasingly relevant to certification: a product that substitutes quinoa for rice to lower iAs may simultaneously elevate Cd if the quinoa is sourced from a Cd-rich region. The Peru/Bolivia regional variance is large enough that origin-specific sourcing matters for HMTc literature evidence threshold setting.

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.

Routing

Direct evidence for quinoa lands here. Andean-wide multi-crop surveys also touch cocoa and the cereals umbrella. Product-level routing will flow through breakfast cereal and infant cereal pages once Phase 2 ingest connects quinoa-bearing products to this commodity.

Contamination Profile State

All ten contamination_profile sub-blocks are pending. Cd will be the first synthesis target given six contributing source pages already in scope; geographic variance (Peru vs Bolivia vs Ecuador, valley vs altiplano, mining-proximate vs non-proximate) is the principal organizing axis for that synthesis.

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]*.

Why this commodity accumulates heavy metals

Quinoa (Chenopodium quinoa) is a pseudocereal cultivated dominantly in the Andean highlands of Peru, Bolivia, Ecuador, and Chile. Quinoa accumulates moderate heavy-metal load primarily via soil-uptake and irrigation-water inheritance from the Andean region, which has documented mining-impacted watershed geochemistry. The Andean soils contain naturally elevated As (from arsenopyrite mineral deposits) and locally elevated Cd from volcanic-soil and mining-residue influence; quinoa grown in these soils accumulates trace tAs at 60 ppb medium confidence per the contributing source corpus. Quinoa is celebrated as a gluten-free grain alternative and a complete protein source for vegetarian and infant feeding applications; this market positioning has driven demand growth that intersects with the Andean source-region contamination concerns.

The HMTc panel concerns for quinoa are tAs (with iAs/DMA speciation variable depending on Andean cultivation region), Pb and Cd at moderate levels from soil-uptake, and trace Ni. Quinoa routes into baby cereal formulations (as a non-rice grain substitute for rice cereal — see non-rice-grains and rice cereal), gluten-free baking, salads, and adult breakfast cereals.

Ranges by source, region, and variety

Variance within quinoa tracks Andean origin region (Peruvian quinoa from Junín, Puno, Cusco; Bolivian quinoa from the southern Altiplano; Ecuadorian quinoa from Chimborazo and Cotopaxi — each carrying different soil-geochemistry profiles), altitude (high-altitude Altiplano quinoa is the traditional product; lower-altitude expanded production carries different baselines), cultivar (Royal, Real, multicolored, and dozens of regional cultivars with varying As-accumulation tendencies), and irrigation-water source (snow-melt vs irrigation-canal vs groundwater — each with different As-baseline). Non-Andean expanded production in North America, Europe, and Asia carries different baselines reflecting local soil profiles.

Processing effects

Quinoa processing involves washing (essential to remove the bitter saponins from the seed coat; this also reduces surface-deposited metals), drying, and packaging. The saponin-removal washing step modestly reduces surface-Pb and surface-deposited contaminants but does not affect grain-internal As, Cd, or Ni. Quinoa flour production involves milling washed quinoa; quinoa flour carries the source-grain metal profile concentrated slightly via moisture removal. Toasted/popped quinoa products concentrate per-mass metals via additional moisture removal.

Ingredient-derivative risk

Quinoa derivatives include whole quinoa seeds (white, red, black, multicolored), quinoa flour (gluten-free baking application), quinoa flakes (breakfast cereal), puffed/popped quinoa (snack-food and cereal applications), and quinoa milk (a plant-milk alternative, partitioning quinoa metals into liquid fraction). Quinoa is increasingly incorporated into infant cereals as a non-rice gluten-free alternative; this application warrants particular As attention because quinoa carries source-region As at levels that are not negligible even though they’re lower than rice iAs.

Mitigation options

Sourcing levers (supply-chain-screening) are dominant for quinoa given the Andean-source-region contamination concerns. Origin specification favoring documented low-As Andean production zones; supplier-soil verification programs; and contractual As/Cd ceiling on incoming quinoa.

Agronomic levers (agronomic) operate at the quinoa-cultivation stage. Irrigation-water specification (avoiding mining-impacted watersheds); soil amendments where economically feasible; cultivar selection (low-As-accumulating cultivars are under agronomic research).

Processing levers (processing) include thorough washing to maximize surface-Pb removal; processing-equipment material specification.

Formulation levers (formulation) include multi-grain product reformulation (quinoa-oat blends, quinoa-corn blends) to dilute per-product As load.

Testing and QC levers (testing-and-qc) include lot-level Pb, Cd, tAs/iAs testing on incoming quinoa supply. HPLC-ICP-MS speciation distinguishes iAs from DMA in quinoa-source As.

Packaging and storage levers (packaging-and-storage) are minor; standard storage-condition specifications apply.

Regulatory limits that apply

• eu-2023-915 — EU Reg. 2023/915 sets binding maximum levels for Pb and Cd in cereal grains; quinoa as a pseudocereal falls under broader cereal-grain provisions.
• FDA does not currently set quantitative action levels specific to quinoa; FDA Closer to Zero baby-food framework applies to quinoa-containing infant products.
• Codex Alimentarius CXS 193-1995 (Codex 1995) sets cereal-grain category limits.
• California Prop 65 (california-prop65) Pb and As MADLs apply to quinoa 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.