Abstract
The exploration of solvent system to completely dissolve lignocellulosic biomass is of great important for the development of biomass based materials and chemicals. Dimethyl sulfoxide containing certain amount of lithium chloride (LiCl/DMSO) was proved an effective solvent system for the dissolution of ball-milled wood. In this paper, four samples of rice straw, internode (stem without node), stem, leaf (leaf and sheath) and whole straw, with and without 1 h of ball milling treatment, were used to investigate the effects of their dissolution in LiCl/DMSO solvent on the chemical composition of regenerated and enzymatically hydrolyzed materials. Because of the structural difference from wood, samples expose d to 1 h of milling were almost completely dissolved. The chemical nature of the regenerated material and of residual after enzymatic hydrolysis of rice straw was analyzed and the susceptibility of this rice straw to the enzymatic hydrolysis was evaluated.
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