Anwar et al. 2021 - lead and mercury in canned tuna from Aceh waters
Anwar and coauthors evaluated canned tuna made from fish caught in Aceh waters under different pressure-canner sterilization conditions and media. Heavy metals were one of the quality parameters. The paper reports very low lead and measurable mercury in canned tuna, making it routeable to canned fish rather than salt.
Key numbers
The abstract reports:
| Matrix | Pb | tHg |
|---|---|---|
| Canned tuna | <0.0001 mg/kg | 0.29-0.58 mg/kg |
The same study tested fresh-tuna histamine, total plate count, and pH, and tested canned-tuna total plate count, pH, Pb, Hg, and sensory acceptance.
Methods (brief)
Tuna from Aceh waters was canned using a 24 L pressure canner. Sterilization treatments were 121 degrees C for 20 minutes and 115 degrees C for 50 minutes, with brine or palm-oil media. Heavy metals were reported as Pb and Hg without methylmercury speciation.
Implications
Certification: Useful for canned fish Hg context, but total mercury should not be substituted for methylmercury.
Courses: Illustrates why processing studies may still contain finished-product metal values.
App: Can support canned tuna mercury context with Indonesia/Aceh geography preserved.
Wiki pages this source may touch
Verification notes
The fetched filename classified this as salt total-mercury evidence, but the actual food matrix is canned tuna. Mercury is total mercury; methylmercury is not reported.
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 |
|---|---|---|
| 50ec0f0 | 2026-05-30 | ingest auto-fetched 2026-05-30 2145 batch 1: 10 source pages |