Search

The aim of the study was to estimate copper (Cu) accumulation efficiency in whole-fruiting bodies of 18 edible and non-edible wild growing mushrooms collected from 27 places in the Wielkopolska Voivodeship. Mushrooms were collected each time from the same places to estimate the diversity in Cu accumulation between tested mushroom species within 3 consecutive years of study (2011–2013). The study results revealed various accumulation of Cu in the whole-tested mushroom fruiting bodies. The highest mean accumulation of Cu was observed inMacrolepiota procera(119.4 ± 20.0 mg kg−1dm), while the lowest was inSuillus luteusandRussula felleafruiting bodies (16.1 ± 3.0 and 18.8 ± 4.6 mg kg−1dm, respectively). Significant differences in Cu accumulation between mushroom species collected in 2011 and in the two following years (2012 and 2013) were observed. The results indicated that sporadic consumption of these mushrooms was not related to excessive intake of Cu for the human body (no toxic influence on health). [ABSTRACT FROM PUBLISHER]

The aim of this study was to assess the response of Salix viminalis L. under model conditions to different copper concentrations and, as a consequence, potential application of the experimental results in decontamination of water with heavy metal ions (phytoaccumlation). The 14-day experiment was conducted on one-year-old cuttings of Salix viminalis L. ‘Cannabina’ exposed, in a phytotron, to six different copper levels in hydroponic pots. The results showed that the capacity to accumulate heavy metals was of the following order: roots > rods > shoots > leaves. The linear relationships between the accumulation efficiency of particular Salix parts were confirmed. Together with an increase in copper sorption in above-ground organs, a decrease was observed in root biomass and the length of roots, shoots and leaves. The release of low molecular weight organic acids into solution was different under various Cu levels. Glucose, fructose and sucrose contents in leaves of Salix in all treatments were higher than in control plants. Higher concentration of sugars (4 times higher compared to the control) was detected for fructose in a 2 mM Cu treatment. The total phenolics content rapidly increased only at 3 mM Cu level. Free and total salicylic acid and the glutathione contents in plants treated with copper in relation to the control were always higher and changed with increasing concentration of copper ions in the medium. [ABSTRACT FROM AUTHOR]

This investigation was undertaken to determine efficiency of selected heavy metal ions by different Salix viminalis tissues in relation to local physicochemical parameters. Seven heavy metals (Cd, Co, Cr, Cu, Ni, Pb and Zn) were analyzed in 5 types of tissues (bark, root, shoots, leaves and petioles). The results presented here show different accumulation rates of tested metals in individual tissues depending on location and soil characteristics. A similar trend in the accumulation of elements in leaves and petioles was observed except for zinc and chromium. The quantities of heavy metals in shoots indicate their limited migration in plant (especially lead and cadmium). In contrast high levels of zinc in leaves were observed, which suggests strong migration of this metal to upper parts of plants. Analyzed willows were characterized by selective accumulation of ions of investigated heavy metals, with different metal migration abilities depending on location (soil properties e.g. limited migration of lead and intensive migration of cadmium and zinc to aboveground organs). A correlation between metal accumulation in the tissue and soil factors (pH, redox potential, total organic carbon) was observed. The total accumulation and translocation of heavy metal ions (especially chromium) depend on soil parameters and to some extent wood structure (cellulose, lignin). [ABSTRACT FROM AUTHOR]

Introduction. This paper constitutes a supplementary study of the research conducted to assess accumulation efficiency of selected trace elements by Xerocomus badius fruiting bodies picked in some regions of Poland in selected years. Material and methods. Atomic absorption/emission spectrometry techniques (FAAS and AES) were applied to determine in the fruiting bodies of this mushroom species the total contents of Ca, K, Mg and Na, as well as Al as a metal capable of entering into easy interactions with nutritional elements and inhibiting their proper action in the human organism. Results. The highest concentrations of Al, K and Mg were determined in mushroom fruiting bodies collected in the Lower Silesia Voivodeship, amounting to 28.08 ±5.81 mg·kg-1 d.w., 2.39 ±0.21 g·kg-1 d.w. and 372.31 ±90.55 mg·kg-1 d.w., respectively. On the other hand, the highest concentrations of Ca (78.08 ±24.64 mg·kg-1 d.w.) were recorded in mushrooms from the Lódz Voivodeship, while the highest concentrations of Na (77.03 ±20.46 mg·kg-1 d.w.) - in those from the Pomeranian Voivodeship were observed. In general, BCF > 1 was found only for K accumulation. Conclusion. Concentrations of nutritional elements determined in this study revealed that the consumption of X. badius fruiting bodies supplied only small quantities of these constituents in comparison with the amounts consumed in other products. The detected Al concentrations showed that fruiting bodies of this mushroom species consumed in Poland during the past 20 years could not lead to health problems caused by the presence of this metal. [ABSTRACT FROM AUTHOR]

Introduction. As regards a significant intake of wild growing edible mushrooms, especially in East and Central Europe, concentrations of toxic elements should be periodically analysed. The aim of the study was to assess changes in concentrations of selected trace elements (Ba, Cd, Co, Cu, Fe, Hg, Mn, Ni, Pb, Sr and Zn) in a mushroom species, Xerocomus badius. Material and methods. Xerocomus badius fruiting bodies were collected from five regions of Poland within the last 20 years (selected years when these mushrooms were growing). Flame atomic absorption spectrometry (FAAS) was used for determination of 10 elements while for Hg cold vapour atomic absorption spectrometry (CVAAS) was used. Results. Generally the results show no significant differences in the accumulation efficiency of individual elements by mushrooms collected from different regions of Poland, but significant differences were observed in the accumulation efficiency of these elements by mushrooms collected in particular years of their harvest. The highest accumulation indicated by bioconcentration factors (BCFs) was observed for Cu (10.03), Hg (148.15) and Zn (4.88). Conclusion. Concentrations of Cu, Fe, Mn, Zn in the tested mushrooms were found to be lower than the values of the recommended dietary allowances (RDA), therefore the levels of these elements are not toxic for people. In our opinion, occasional consumption of these mushroom fruiting bodies within the last 20 years in Poland did not provide significant amounts of analysed trace elements (no more than other foods). [ABSTRACT FROM AUTHOR]