Overview
This A-tier peer-reviewed paper is the first promoted Category 5 occurrence source for the soy-based plant-milk row. It measured 18 soy-based beverages from Campinas, Brazil, grouped by soy source, using ICP-OES. It provides usable finished-product values for Al, As, Cd, Ni, Pb, Sn, and other trace elements, plus an Al exposure estimate for one 200 mL serving.
Key numbers
| Metal | Field findings in soy-based beverages | HMI handling |
|---|---|---|
| Al | Mean 758 ug/L in isolate-protein beverages, 609 ug/L in hydrosoluble-extract beverages, and 176 ug/L in soybean beverages; ranges 137-1822, 92-1375, and 45-356 ug/L | Finished-product occurrence evidence for Plant Milks, Soy-Based |
| tAs | <38.2 ug/L across all three soy-source groups | Total arsenic only; do not treat as iAs |
| Cd | <3.8 ug/L across all three soy-source groups | Occurrence context; no exact loaded product-specific regulation in the wiki yet |
| Cr | 1.8 (<10.9-11.0) ug/L in isolate-protein beverages; <10.9 ug/L in hydrosoluble-extract and soybean beverages | Total/unspecified chromium only; do not treat as Cr-VI |
| Ni | <25.7 ug/L in isolate-protein beverages, 4.9 (<25.7-29.4) ug/L in hydrosoluble-extract beverages, and 29 (<25.7-46) ug/L in soybean beverages | Occurrence context for the soy row |
| Pb | <10.9 ug/L in isolate-protein and hydrosoluble-extract beverages; 2.2 (<10.9-13) ug/L in soybean beverages | Occurrence context; source-cited Brazilian/MERCOSUR threshold comparison needs direct legal-source review |
| Sb | 6.2 (<10.3-24) ug/L in isolate-protein beverages, 2.5 (<10.3-15) ug/L in hydrosoluble-extract beverages, and 12 (<10.3-61) ug/L in soybean beverages | Occurrence context; censored lower range bounds retained as reported |
| Sn | 4.3 (<18-26) ug/L in isolate-protein beverages; <18 ug/L in the other groups | Occurrence context |
| Al exposure | One 200 mL serving contributed up to 3.5% of Al PTWI for children and 0.9% for adults | Risk context, not an HMTc threshold |
Regulatory crosswalk status
The authors compare As, Cd, Pb, and Sn against Brazilian and MERCOSUR inorganic-contaminant thresholds. The wiki has not yet loaded those legal instruments as direct regulation pages, and the field units are ug/L while the cited thresholds are expressed as mass-per-mass. Until density/basis and direct legal text are reviewed, the comparison layer treats those rows as context-only rather than compliance determinations.
Routing
These are finished soy-beverage measurements, so they belong on Plant Milks, Soy-Based and in structured occurrence rows. They should not populate Soy as ingredient-only values.
Limitations
The samples were Brazilian retail soy-based beverages, not global soy milks. The source is beverage-specific and does not resolve rice-based, almond, oat, coconut, or broader plant-milk rows. Arsenic is total arsenic, not inorganic arsenic.
Wiki pages updated on ingest
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and 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 | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 7 sections added; narrative text revised |