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Conversion of Sago (Metroxylon sagu) Pith Waste to Fermentable Sugars via a Facile Depolymerization Process
- Pang, SuhCem, Voon, LeeKen, Chin, SukFun
- Applied biochemistry and biotechnology 2018 v.184 no.4 pp. 1142-1154
- Metroxylon sagu, biomass, byproducts, depolymerization, glucose, lignocellulose, oxalic acid, pith, reducing sugars, sago, sodium chloride, temperature, wastes
- The conversion of starchy sago (Metroxylon sagu) pith waste (SPW), a lignocellulosic biomass waste, to fermentable sugars under mild conditions had been successfully demonstrated. The optimum depolymerization of SPW was achieved at 2 wt% sample loading which was catalyzed by 100 mM of oxalic acid in the presence of 25 wt% NaCl solution at 110 °C for 3 h. Up to 97% SPW sample was being converted into fermentable sugars with limited formation of by-products after two sequential depolymerization cycles. Both reaction temperature and concentration of oxalic acid were crucial parameters for the depolymerization of SPW which exhibited a high selectivity for the production of glucose over other reducing sugars.