Co-catalysis of magnesium chloride and ferrous chloride for xylo-oligosaccharides and glucose production from sugarcane bagasse.

Author(s) Zhang, W.; Lei, F.; Li, P.; Zhang, X.; Jiang, J.
Journal Bioresour Technol
Date Published 2019 Nov

Inorganic salt treatment is a novel, high-yield, and environmentally friendly approach for the production of xylo-oligosaccharides from Sugarcane bagasse with degree of polymerization of 2-5. A xylo-oligosaccharides yield of 53.79% was obtained with 0.1 M MgCl treatment at 180 °C/10 min, and 41.89% with 0.1 M FeCl treatment at 140 °C/30 min. The xylo-oligosaccharides yield from the co-catalysis of 0.05 M FeCl + 0.05 M MgCl reached 54.68% (29.34% xylobiose and 20.94% xylotriose) at 140 °C/30 min. The co-catalysis not only effectively improved the xylobiose and xylotriose contents but also increased the total yield of xylo-oligosaccharides under mild reaction conditions. Additionally, the glucose yield observed from the solid residue after inorganic salt treatment was 71.62% by enzymatic hydrolysis. Mg and Fe are essential for good human health without separation from the system, therefore, the inorganic salt treatment can be potentially applied in the co-production of xylo-oligosaccharides and glucose.

DOI 10.1016/j.biortech.2019.121839
Keywords Catalysis; Cellulose; Ferrous Compounds; Glucose; Hydrolysis; Magnesium Chloride; Oligosaccharides; Polymerization; Saccharum
ISSN 1873-2976
Citation Bioresour Technol. 2019;291:121839.

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