Falandysz et al. 2021 - Total mercury and methylmercury in crude and braised Boletus edulis

Falandysz and colleagues measured total mercury and methylmercury in Boletus edulis fruiting bodies across developmental stages before and after braising. The source is routeable for mushroom mercury because it reports both total Hg and MeHg, separates crude and braised matrices, and reports wet-weight concentration ranges. Braising increased wet-weight Hg and MeHg concentrations because cooking reduced water content, while dry-weight contents decreased.

Key numbers

The abstract reports wet-weight concentrations unless otherwise noted.

• Crude Boletus edulis total Hg ranged from 0.1880 +/- 0.0247 to 0.2929 +/- 0.0030 mg/kg wet weight across developmental-stage groups.
• Braised Boletus edulis total Hg ranged from 0.2668 +/- 0.0090 to 0.5434 +/- 0.0071 mg/kg wet weight.
• MeHg represented 1.9 +/- 0.7% of total Hg in crude mushrooms and 1.4 +/- 0.3% of total Hg in braised mushrooms.
• Braising increased wet-weight total Hg and MeHg by 52 +/- 31% and 53 +/- 122%, respectively, but reduced dry-weight contents by about 40 +/- 14% for total Hg and 40 +/- 49% for MeHg.

Methods (brief)

The study grouped Boletus edulis carpophores by developmental stage and analyzed crude and braised portions for total Hg and MeHg. Total Hg was measured by cold-vapor atomic absorption methods; methylmercury was measured as a species-specific fraction. Results are reported by processing state, which matters because wet-weight cooking concentration and dry-weight retention move in opposite directions.

Implications

This source contributes direct mushroom data for mercury-total and mercury-methyl. It is useful for the distinction between total Hg and MeHg in mushrooms because MeHg is a small percentage of total Hg in this dataset. The braising result should be routed as a processing/basis note: higher wet-weight concentrations after cooking do not imply more total Hg mass in the mushroom solids.

Wiki pages this source may touch

• mushrooms
• mercury-total
• mercury-methyl

Verification notes

• DOI, title, authors, journal, and online publication year were taken from the PDF article header. The journal issue may print later, but the DOI landing/header date is 2021.
• Total mercury and methylmercury are distinct analytes and must not be collapsed.
• The page keeps crude and braised matrices separate because cooking changes the basis and apparent wet-weight concentration.

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.