Trace Elements Composition of Boletus Mushrooms from the Province of Yunnan, China
Bibliographic record
Abstract
This study presents data on 20 metallic and semi-metallic elements in three species of the genus Boletus (B.luridus, B. magnificus and B. tomentipes) determined by inductive coupled plasma -dynamic reactive cell -mass spectrometry (ICP-DRC-MS) and cold vapour -atomic absorption spectroscopy (CV-AAS). MethodsIn total, 24 specimens of B. luridus, 38 of B. magnificus, 38 of B. tomentipes were collected in Yunnan (one sample of B. tomentipes was also from the province of Sichuan).They were separated into caps and stipes, than prepared and pooled respectively and examined.Fresh mushrooms directly after pickup were cleaned up from any visible plant vegetation and soil debris with a plastic knife and the bottom part of stem was cutoff, and further rinsed with deionized water.Thereafter, the mushroom samples were placed into plastic basket of an electrically heated commercial dryer (dehydrator for vegetables etc.) and dried at 65 °C to constant mass.Dried fungal materials were pulverized in a porcelain mortar and kept in sealed polyethylene bags under dry conditions.Before digestion with nitric acid, the samples were dried at 65 °C for 12 h using an electrically heated laboratory oven.The elements such as Li, V, Cr, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, Ag, Cd, Sb, Cs, Ba, Pb, Tl, U were determined using the ELAN DRC II ICP-MS Inductively Coupled Plasma Mass Spectrometer (PerkinElmer, SCIEX, Canada) equipped with a Meinhard concentric nebulizer, cyclonic spray chamber, dynamic reaction cell, Pt cones and quadruple mass analyzer. ResultsLithium concentrations in caps were from 0.15±0.09to 0.61±0.43mg kg -1 dry biomass (db), while median values showed on similar content of this element in the caps of all three species (p > 0.05; Mann -Whitney U test).Rubidium in caps of Boletus mushrooms was at 90±35-460±350 mg kg -1 db, and in stipes 56±7-
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".