Food enrichment with minerals has been a method of increasing health benefits. Edible Pleurotus
ostreatus mushrooms are a source of dietary elements and antioxidants. In this work, the phenolic
content, antioxidant activity and metal content of P. ostreatus grown on coffee husk, enriched with iron
(Fe), zinc (Zn) and lithium (Li) were investigated. The content of phenolic compounds was found to be
different in mushroom enriched with Fe, Zn or Li. In DPPH test, a difference was observed in antioxidant
activity; however, no difference in this activity was observed using b-carotene/linoleic acid test. The
enrichment with minerals promoted decrease in the content of Fe in three enriched samples