Hydrolysis and Valorization of Lignocellulosic Biomass

Lignocellulosic biomass, comprising cellulose, hemicelluloses and lignin, represents the most abundant renewable carbon resource on Earth. Its complex polymeric structure resists degradation, demanding carefully tailored pretreatments to expose polysaccharide chains for hydrolytic cleavage. Hydrolysis—whether chemical, enzymatic or hydrothermal—yields fermentable sugars, organic acids and phenolic building blocks. Subsequent valorization pathways transform these intermediates into biofuels, bioplastics, antioxidants and platform chemicals. Advances in process intensification, green solvents and high‐pressure systems have improved yield, selectivity and sustainability. Integration of pretreatment, fractionation and downstream conversion within biorefinery concepts promises to close carbon cycles, reduce dependence on fossil resources and foster circular economy models. Global research efforts focus on optimising reaction conditions, minimising inhibitors, recovering lignin fractions of defined quality, and conducting techno‐economic and life‐cycle assessments to ensure scalability and environmental compatibility.

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Hydrolysis and Valorization of Lignocellulosic Biomass publication trend

The graph below shows the total number of articles in hydrolysis and valorization of lignocellulosic biomass across all publications each year (not limited to Nature Index journals).

Technical terms

Lignocellulosic biomass: Plant‐derived material composed of cellulose, hemicelluloses and lignin forming a recalcitrant matrix.

Hydrolysis: Chemical or enzymatic cleavage of polymeric bonds in biomass to release monomeric sugars.

Valorization: Conversion of biomass‐derived intermediates into higher‐value products such as biofuels, chemicals or materials.

Enzymatic saccharification: Biocatalytic process using cellulases and hemicellulases to hydrolyse polysaccharides into fermentable sugars.

Subcritical water: Water held at high temperature (100–374 °C) and pressure, exhibiting altered solvation properties that enhance hydrolytic reactions.

Supercritical carbon dioxide (sc-CO₂): CO₂ above its critical point (31 °C, 7.38 MPa) used as a green solvent for pretreatment and extraction without leaving toxic residues.

References

1. Valorizing corn stover waste into valuable bioproducts using subcritical water hydrolysis. Biofuel Research Journal (2025).
2. Supercritical CO2 as effective wheat straw pretreatment for subsequent mild fractionation strategies. Chemical Engineering Journal (2024).
3. Techno-economic assessment of subcritical water hydrolysis process for sugars production from brewer’s spent grains. Industrial Crops and Products (2021).