Chemical Characteristics Analysis and Quality Assessment of Reed-Based Spent Mushroom Substrate

Chemical characteristics analysis and quality assessment is necessary before choosing a sustainable utilization way for spent mushroom substrate (SMS) disposal. Therefore, three varieties SMS of Pleurotus spp. cultivated on reed were taken as samples to analyze chemical the feed fertilizer nutrients, mineral elements. All acidic, pH was 5.26–5.51. There no significant difference contents fiber, carbon, pH, Pb, Cd, Hg, As in SMS, but they lower than that (S), expect Pb Cd. The principal component based 25 variables showed 2 components explained 72.2% variation SMS. first (56.8%) differentiated S, eryngii (SMS-P.E) from P. ostreatus citrinopileatus (SMS-P.C, SMS-P.O). second (15.4%) SMS-P.C SMS-P.O. total sugar, amino acids, potassium, crude polysaccharide, lipid similar between S SMS-P.E. protein, ash, nitrogen, Ca, Zn, Cu, Mn SMS-P.E even more S. parameters phosphorus much suggestion provided: according carbon neutral detergent fiber grown could be considered materials secondary cultivation mushroom; SMS-P.O fit citrinopileatus; used fertilizer.