A stepwise pretreatment process for coconut dregs(CD)has been investigated to enhance availability of hemicellulose.Recently,lignocellulose-rich agricultural waste such as CD has garnered substantial attention as a su...A stepwise pretreatment process for coconut dregs(CD)has been investigated to enhance availability of hemicellulose.Recently,lignocellulose-rich agricultural waste such as CD has garnered substantial attention as a sustainable raw material for producing value-added bio-products.To optimize the process variables within the stepwise pretreatment using Pulsed Electric Field(PEF)and Solid-State Fermentation(SSF),Response Surface Methodology(RSM)based on Central Composite Design(CCD)was employed.PEF,a non-thermal physical treatment,offers advantages such as low energy consumption and reduced processing times,while SSF utilizes Pleurotus ostreatus to promote biodegradation.A statistical model was constructed using a three-factor CCD that included five center points and axial points,with variables including PEF treatment duration(30,60,and 90 s),substrate particle size(20,40,and 60 mesh),and incubation time(10,20,and 30 days).Changes in lignocellulose composition were analyzed to evaluate their effects on the process.The optimal parameters identified were a particle size of 40 mesh,a PEF treatment duration of 61 s,and an incubation period of 12.5 days.Under these conditions,the process yielded an impressive increase in hemicellulose availability by 106.53%,a minimization of cellulose loss to 6.28%,and a successful delignification resulting in a 21.78%removal of lignin.展开更多
基金funded by BIMA from Ministry of Education,Culture,Research and Technology,grant number 045/E5/PG.02.00.PL/2024,with derivative contracts 00309.54/UN10.A0501/BT.01.03.2/2024.
文摘A stepwise pretreatment process for coconut dregs(CD)has been investigated to enhance availability of hemicellulose.Recently,lignocellulose-rich agricultural waste such as CD has garnered substantial attention as a sustainable raw material for producing value-added bio-products.To optimize the process variables within the stepwise pretreatment using Pulsed Electric Field(PEF)and Solid-State Fermentation(SSF),Response Surface Methodology(RSM)based on Central Composite Design(CCD)was employed.PEF,a non-thermal physical treatment,offers advantages such as low energy consumption and reduced processing times,while SSF utilizes Pleurotus ostreatus to promote biodegradation.A statistical model was constructed using a three-factor CCD that included five center points and axial points,with variables including PEF treatment duration(30,60,and 90 s),substrate particle size(20,40,and 60 mesh),and incubation time(10,20,and 30 days).Changes in lignocellulose composition were analyzed to evaluate their effects on the process.The optimal parameters identified were a particle size of 40 mesh,a PEF treatment duration of 61 s,and an incubation period of 12.5 days.Under these conditions,the process yielded an impressive increase in hemicellulose availability by 106.53%,a minimization of cellulose loss to 6.28%,and a successful delignification resulting in a 21.78%removal of lignin.
