02436naa a2200349 a 450000100080000000500110000800800410001902400480006010000210010824501580012926000090028752013820029665000120167865000240169065000210171465300210173565300210175665300140177770000190179170000300181070000190184070000170185970000250187670000160190170000190191770000190193670000280195570000220198370000150200570000190202077300470203921591672023-12-05       2023    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.3390/plants121528242DOI1 aSPACKI, K. de C.  aImproving enzymatic saccharification of peach palm (Bactris gasipaes) wastes via biological pretreatment with Pleurotus ostreatus.h[electronic resource]  c2023  aAbstract. The white-rot fungus Pleurotus ostreatus was used for biological pretreatment of peach palm (Bactris gasipaes) lignocellulosic wastes. Non-treated and treated B. gasipaes inner sheaths and peel were submitted to hydrolysis using a commercial cellulase preparation from T. reesei. The amounts of total reducing sugars and glucose obtained from the 30 d-pretreated inner sheaths were seven and five times higher, respectively, than those obtained from the inner sheaths without pretreatment. No such improvement was found, however, in the pretreated B. gasipaes peels. Scanning electronic microscopy of the lignocellulosic fibers was performed to verify the structural changes caused by the biological pretreatments. Upon the biological pretreatment, the lignocellulosic structures of the inner sheaths were substantially modified, making them less ordered. The main features of the modifications were the detachment of the fibers, cell wall collapse and, in several cases, the formation of pores in the cell wall surfaces. The peel lignocellulosic fibers showed more ordered fibrils and no modification was observed after pre-treatment. In conclusion, a seven-fold increase in the enzymatic saccharification of the Bactris gasipaes inner sheath was observed after pre-treatment, while no improvement in enzymatic saccharification was observed in the B. gasipaes peel.  aEnzymes  aPleurotus ostreatus  aBactris Gasipaes  aCircular economy  aRenewable energy  aUpcycling1 aNOVI, D. M. P.1 aOLIVEIRA-JUNIOR, V. A. de1 aDURIGON, D. C.1 aFRAGA, F. C.1 aSANTOS, L. F. O. dos1 aHELM, C. V.1 aLIMA, E. A. de1 aPERALTA, R. A.1 aMOREIRA, R. de F. P. M.1 aCORRÊA, R. C. G.1 aBRACHT, A.1 aPERALTA, R. M.  tPlantsgv. 12, n. 15, 2824, p. 1-16, 2023.