Abstract
Forest residue is a class of underutilized lignocellulosic biomass. Spruce and pine are common softwood species and contribute a major fraction to the forest residues. Due to higher lignin content in softwood, these can be suitable raw materials for the production of aromatic chemicals. Efficient fractionation strategies for isolation of lignin from spruce and pine are essential and effective depolymerization of this lignin into aromatic chemicals is critically important for sustainable biorefinery. The produced aromatics from the depolymerization of lignin can be further transformed to other value-added products. In this context, this chapter reports the isolation and structural changes of lignin from various pretreatment methods and its subsequent value addition to valuable materials and chemicals from spruce and pine wood biomass.
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