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[Determination and correlation analysis of trace elements in Boletus tomentipes]
Tao Li1, Yuan-zhong Wang, Ji Zhang
1Yuxi Normal University, Yuxi 653100, China. ltyx_1976@126.com
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|September 28, 2011
Summary
Boletus tomentipes mushrooms are rich in essential trace elements like magnesium and iron, with beneficial zinc and copper. This study details their trace element profile for potential use and quality assessment.
Area of Science:
- Mycology
- Analytical Chemistry
- Environmental Science
Background:
- Mushrooms are a significant source of nutrients and bioactive compounds.
- Understanding the trace element composition of edible fungi is crucial for human health and dietary recommendations.
- Boletus tomentipes is a wild edible mushroom with potential nutritional value.
Purpose of the Study:
- To quantify the concentrations of eleven trace elements in the fruiting bodies of Boletus tomentipes.
- To evaluate the nutritional and potential toxicological significance of these trace elements.
- To explore correlations between different trace elements within the mushroom tissues.
Main Methods:
- Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) was employed for precise elemental analysis.
- Eleven trace elements were quantified: Magnesium (Mg), Iron (Fe), Manganese (Mn), Zinc (Zn), Copper (Cu), Chromium (Cr), Lead (Pb), Nickel (Ni), Cadmium (Cd), Arsenic (As), and Mercury (Hg).
- Statistical analysis was performed to determine correlations between element concentrations.
Main Results:
- Boletus tomentipes fruiting bodies exhibited high concentrations of Mg and Fe (>100 mg/kg) and significant levels of Mn, Zn, and Cu (>10 mg/kg).
- Trace elements like Cr, Pb, Ni, Cd, and As were found in minor amounts (0.1-10.0 mg/kg), with Hg present at the lowest concentration (<0.1 mg/kg).
- Significant positive correlation was observed between Zn and Cu (r=0.659, P<0.05), while negative correlations were found for Hg-As (r=-0.672, P<0.05), Ni-Fe (r=-0.610, P<0.05), and Zn-Mg (r=-0.617, P<0.05).
Conclusions:
- Boletus tomentipes is a valuable source of essential trace minerals, particularly Mg, Fe, Mn, Zn, and Cu.
- The low levels of toxic heavy metals suggest a favorable safety profile for consumption.
- The identified elemental correlations provide insights into the biogeochemical processes within this mushroom species, aiding in its exploitation and quality assessment.
