The effect of amphipilic lignin derivatives addition on enzymatic hydrolysis performance of kraft pulp from sorghum bagasse

2nd International Conference on Biomass: Toward Sustainable Biomass Utilization for Industrial and Energy Applications

生物科学;工业技术;能源学

Fatriasari, Widya^1 ; Nugroho Adi, D.T.^2 ; Laksana, R.P.B.^1 ; Fajriutami, T.^1 ; Raniya, R.^1 ; Ghozali, M.^2 ; Hermiati, E.^1

Research Center for Biomaterials LIPI, Jl Raya Bogor KM 46, Cibinong Bogor

16911, Indonesia^1

Research Center for Chemistry, Puspiptek Serpong, Indonesia^2

关键词: Chemical characteristic;    Hydrophilic properties;    Laminated wood;    Lignin derivatives;    Natural rubber latex;    Reaction performance;    Reducing sugars;    Sorghum bagasse;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/141/1/012005/pdf
DOI  :  10.1088/1755-1315/141/1/012005

来源: IOP

【 摘 要 】

Previously, the chemical characteristics of isolated lignin from Acacia mangium black liquor of kraft pulping was characterized. This lignin was blended with natural rubber latex (NR-L) as adhesive in laminated wood. In addition, lignin has potency for biosurfactant materials by modification of the hydrophobic into hydrophilic properties. Therefore, this study was intended to develop lignin as material for amphipilic lignin derivatives (A-LD) biosurfactant by reacting lignin with epoxilated polyethylene glicol (PEG). A-LD addition in slurries was used to improve the enzymatic hydrolysis (EH) of kraft pulp sweet bagasse sorghum (SSB). The main observation in EH performance was to investigate the effect of lignin isolation method (one and two step) in A-LD and A-LD loading addition on reducing sugar yield (RSY) of SSB kraft pulp. The pulp was hydrolyzed at 50°C and 150 rpm for 72 h with 10 FPU cellulase loading in the shaking incubator. A-LD from one (L1S) and two step (L2S) lignin was added with A-LD loading of 0, 1, 2, 5, and 10% (b/v). The RSY of hydrolyzate has been observed after EH. A-LDs addition in EH of SSB kraft pulp enhanced RSY. L1S worked better in reaction performance with PEDGE compared to L2S and LS. A better performance was showed by PEDGE 500 than that of PEDGE 6000. Generally, the higher A-LDs loading resulted higher RSY. The highest RSY (81.33%) was resulted in addition of 10% A-LD L1S using PEDGE 500. A 5% A-LD loading was more considered to be added in EH because the RSY was comparable with 10% A-LD loading.