Biomass pretreatments capable of enabling lignin valorization in a biorefinery process

- Valorization of lignin is imperative for realization of the biorefinery process.
- Lignin condensation impairs valorization and can be minimized in pretreatment.
- Acidolysis is the primary route for acidic degradation of lignin side-chain ethers.
- Alkaline nucleophiles exhibit genesis of inter-lignin condensation.