Studies have revealed that Se is incorporated into the P. ostreatus
biomass, as this element was found to be associated with the
membrane (44%) and cell wall (56%). Se incorporation into fungal
proteins reveals a great potential to improve the nutritional value
of the mushroom (Munoz et al., 2006). In enriched mushrooms, the
Se bioavailability was verified using in vivo methods. The higher
levels of absorption of Se in rats fed with Se enriched mushrooms
were verified by Silva et al. (2010), which compared these results
with the ones achieved with rats with sodium selenate in their
diets.