Effect of pretreatment of lignocellulosic substrates on physiological and biochemical characteristics of some species of edible and medical mushrooms

The development of new effective substrates for mushroom cultivation is relevant not only in order to obtain high-quality food products, but also as a need for rational use of natural resources. Chemical pretreatment can modify the chemical composition of various types of lignocellulosic materials and remove the growth-inhibiting compounds which can affect the physiological and biochemical processes in fungi. The present work provides the first comprehensive assessment of growth and biochemical characteristics of xylotrophic basidiomycetes cultivated on substrates that contain chemical pretreated lignocellulosic materials. Edible mushrooms Hericium erinaceus (Bull.) Persoon and Flammulina velutipes (Curtis) Singer and medicinal mushroom Ganoderma lucidum (Curtis) P. Karst. were selected for study. Pine ( Pinus sylvestris L.) and beech ( Fagus orientalis Lipsky) sawdust of particle size 0.24-0.315 mm were used. Pretreatment of lignocellulosic material with 2 % wt. solutions of hydrochloric acid, sulfuric acid, sodium hydroxide and hydrogen peroxide was carried out in autoclave at 120 °С for 60 min...