Carbohydrate Research p. 249 - 260 (1989)
Update date:2022-08-18
Topics:
Helm, Richard F.
Young, Raymond A.
Conner, Anthony H.
The reversion product formed during the acid hydrolysis of Avicel to D-glucose, under conditions envisaged for the industrial conversion of woody biomass into monomeric sugars, have been determined by using gas-liquid chromatography.Avicel was hydrolyzed in dilute sulfuric acid (0.26-1.27 wt.percent) between 160 and 250 deg in small (3mm, i.d.) glass tubes at a 3:1 liquid-to-solid ratio.The anhydro sugars, levoglucosan and 1,6-anhydro-β-D-glucofuranose, were produced in the ratio of 7:3 and constituted >50percent of the total yield of reversion products.The yield of anhydro sugar followed equilibrium kinetics, and reached 6percent at maximum yields (50percent) of D-glucose.Isomaltose and gentiobiose were the most preponderant disaccharides found among the reversion products, constituting together ca. 25percent of the reversion products.The (1->2)- and (1->3)-linked α-disaccharides preponderated over their β counterparts.The total yields of reversion products approached 10percent on the basis of the D-glucose theoretically available.
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(2003)Doi:10.1016/0031-9422(89)80215-8
(1989)