Priority Dissolution of Hemicellulose and its Subsequent Value-added Utilization along with High Activity Lignin

Abstract

In lignocellulosic biorefineries, efficiently and cleanly deconstructing the stubborn structure of plant cell walls to achieve component separation remains a research hotspot. Among these, the high-value utilization of lignin is limited by its purity and condensed structure. Traditional pretreatment strategies have predominantly focused on “forceful cell wall disruption,” directly targeting lignin itself for removal or dissolution. However, recent research on two-step sequential biomass deconstruction is guiding us toward a more sophisticated paradigm: the preferential and deep dissolution of hemicellulose can serve as a “switch” that triggers subsequent efficient and selective dissolution of lignin.