Efficacy of supplementation of selected medicinal mushrooms with inorganic selenium salts

Abstract

The aim of the study was to evaluate the possibility of supplementation with inorganic forms of selenium (Na2SeO4 and Na2SeO3) in concentrations of 0, 0.1, 0.2, 0.4, 0.6, 0.8, 1.0 and 1.5 mM of three medicinal mushroom species: Agrocybe aegerita, Hericium erinaceus and Ganoderma lucidum. Tested mushroom species grew in Se additions of 0-0.6 mM (A. aegerita and H. erinaceus), while growth of G. lucidum bodies was observed for 0-0.8 mM. For the latter mushroom species, the total Se content was the highest. Content of Seorg was diverse; for control bodies it was the highest for G. lucidum (only organic forms were present), lower for A. aegerita (84% organic forms) and the lowest for H. erinaceus (56% organic forms). Accumulation of Se(IV) was generally significantly higher than Se(VI) for all tested mushroom species. There was no significant decrease of A. aegerita or G. lucidum biomass with the exception of G. lucidum bodies growing under 0.8 mM of Se species addition (15.51 ± 6.53 g). Biomass of H. erinaceus bodies was the highest under 0.2 (197.04 ± 8.73 g), control (191.80 ± 6.06 g) and 0.1 mM (185.04 ± 8.73 g) of both inorganic salts. The addition to the medium of Se salts brought about macroscopic changes in the fruiting bodies of the examined mushrooms. Concentrations exceeding 0.4 mM caused diminution of carpophores or even their total absence. In addition, colour changes of fruiting bodies were also recorded. At Se concentrations of 0.4 and 0.6 mM, A. aegerita fruiting bodies were distinctly lighter and those of H. erinaceus changed colour from purely white to white-pink.

Phenolic composition and antioxidant properties of Pleurotus ostreatus and Pleurotus eryngii enriched with selenium and zinc

“…The Se concentration in non-enriched P. ostreatus (control) was 2.73 ± 0.26 mg/ Inhibition (%) = (A − A C )/A × 100. [21,25,26,29]. In our experiment, after Se and Zn enrichment substrates possessed higher mineral availability for fruiting bodies and it influenced the micronutrient accumulation in mushrooms.…”

“…The obtained recovery values were in the range 96.7-104.1 %. The determination level for the solid samples was 0.1 mg/ kg [29,30].…”

A screening study of elemental composition in 12 marketable mushroom species accessible in Poland

“…Therefore, it would be highly advisable to screen PGE content in cultivation substrates as their origin may be distinctively different. Typical substrates which are used include wheat straw, gypsum, oak and beech sawdust, or chicken manure [64,65]. All of the above can potentially be contaminated, particularly if collected from polluted areas.…”

Phenolic and Flavonoid Content in Hericium Erinaceus, Ganoderma Lucidum, and Agrocybe Aegerita under Selenium Addition

“…The fruiting bodies of H. erinaceus and A. aegerita were not formed at 0.8 mM of Se addition. The stage of maturity, the amount of Se in soil and in the substrates (including Se supplementation of substrate) used in cultivation infl uenced the Se concentration in fruiting bodies (WERNER & BEELMAN, 2002;ESTRADA et al, 2009;BHATIA et al, 2013BHATIA et al, , 2014NIEDZIELSKI et al, 2014). The daily requirement of Se is up to 150-200 μg (NAVARRO- ALARCON & CABRERA-VIQUE, 2008).…”