Protein contents and antioxidant properties of pleurotus ostreatus cultivated on tea and espresso wastes

Authors : Ayşenur YILMAZ, Sibel YILDIZ, Ceyhun KILIÇ, Zehra CAN

Pages : 177-186

Doi:10.21448/ijsm.370113

View : 14 | Download : 4

Publication Date : 2017-11-25

Article Type : Research Paper

Abstract :In this study, Pleurotus ostreatus was cultivated on tea insert ignore into journalissuearticles values(Camellia sinensis); and espresso wastes. Tea wastes were used in two forms; sterilized or non-sterilized. Then, total phenolic, flavonoid, condensed tannin contents, ferric reducing/antioxidant capacity insert ignore into journalissuearticles values(FRAP); and 2,2-diphenyl-1-picryhydrazyl insert ignore into journalissuearticles values(DPPH); free radical scavenging were used as antioxidant determinants and also protein content were investigated in these mushrooms’ methanolic extracts. Same measurements were determined in mushrooms’ growing medium except protein content. The highest protein content insert ignore into journalissuearticles values(20.89%); was found in non-sterilized tea wastes. The highest total phenolic insert ignore into journalissuearticles values(1.460±0.012 mg GAE/g);, total flavonoid insert ignore into journalissuearticles values(0.120±0.005 mg QE/g);, condensed tannin insert ignore into journalissuearticles values(0.877±0.011 mg CE/g); and the lowest scavenging of free radical activity insert ignore into journalissuearticles values(17.190±0.001 mg/mL); were determined in sterilized tea wastes. The highest ferric reducing antioxidant power insert ignore into journalissuearticles values(8.498±0.089 μmolFeSO4.7H2O/g); were determined in espresso wastes. Additionally, there was no statistically significant difference between the sterilized and non-sterilized substrates for the total yield and biological efficiencies. In this case, it can be said that the kinds of substrates and their usage forms are very important in terms of energy savings especially does not require sterilization like tea wastes. Consequently, tea and espresso wastes can be used as a beneficial source of substrate material for Pleurotus ostreatus mushroom cultivation.
Keywords : Antioxidant, espresso wastes, mushroom, tea wastes, total phenolic