The maximum Se absorption by P. ostreatus mushrooms was observed
when coffee husks were enriched with 51 mg kg1 of Se
(Fig. 4). At higher concentrations, Se absorption was inhibited, possibly
due to the excess of sodium selenite present in the substrate.
At concentrations of 3.2 and 12.8 mg kg1 of Se, 34% of added Se was
absorbed, while in the substrate with 51 mg kg1 only 16% was absorbed.
Considering the obtained results, the consumption of 1.0 g
of dried mushrooms grown on substrate with 3.2 mg kg1 of Se is
enough to supply the amount of Se recommended for adults,
55 lg day1 (IOM, 2000).