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The goals of the present study were to characterize the profile of ligninolytic enzymes in five  Pleurotus  species and determine their ability to delignify eight common agro-forestry residues. Generally, corn stalks were the optimal inducer of Mn-dependent peroxidase activity, but the activity peak was noted after wheat straw fermentation by  P. eryngii  (3066.92 U/L).  P .  florida  was the best producer of versatile peroxidase, especially on wheat straw (3028.41 U/L), while apple sawdust induced the highest level of laccase activity in  P. ostreatus  (49601.82 U/L). Efficiency of the studied enzymes was expressed in terms of substrate dry matter loss, which was more substrate-than species-dependent. Reduction of substrate dry mass ranged between 24.83% in wheat straw and 8.83% in plum sawdust as a result of fermentation with  P .  florida  and  P. pulmonarius , respectively. The extent of delignification of the studied substrates was different, ranging from 51.97% after wheat straw fermentation by  P .  pulmonarius  to 4.18% in grapevine sawdust fermented by  P. ostreatus .  P .  pulmonarius  was also characterized by the highest cellulose enrichment (6.54) and  P. ostreatus  by very low one (1.55). The tested biomass is a highly abundant but underutilized source of numerous value-added products, and a cocktail of ligninolytic enzymes of  Pleurotus  spp. could be useful for its environmentally and economically friendly transformation.

Obtaining Cellulose-Available Raw Materials by Pretreatment of Common Agro-Forestry Residues With Pleurotus spp.