Effect of nucleophilic additives on phosphoric acid pretreatment of lignocelluloses

Biotechnology Progress, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

The inhibition of lignin condensation during biomass pretreatment is crucial for enhancing enzymatic hydrolysis efficiency, since the formation rigid cross-linked networks hinders cellulose accessibility and enzyme activity. This study investigates effects nucleophilic additives, including ascorbic acid (AsA), 2-naphthol (2N), 3-hydroxy-2-naphthoic (3H2NA), 2-naphthol-7-sulfonate (7S2NA), as potential agents to suppress on phosphoric poplar. demonstrated a remarkable efficacy in removal xylan (100%) (18.06%-31.35%) from poplar, both with without inclusion additives. An yield ranging 71.41% 100% was achieved incorporation AsA, 2N, 3H2NA, 7S2NA, compared 66.15% substrates pretreated solely acid. enhancement upon addition additives probably due improved enhanced proportion II substrates. analysis total phenolic content prehydrolysates revealed that 3H2NA characterized by their strong hydrophilic groups within chemical structures, significantly facilitated fractionation pretreatment.

Language: Английский

Co-Production of Furfural, Xylo-Oligosaccharides, and Reducing Sugars from Waste Yellow Bamboo Through the Solid Acid-Assisted Hydrothermal Pretreatment

Catalysts, Journal Year: 2025, Volume and Issue: 15(4), P. 325 - 325

Published: March 28, 2025

Lignocellulosic waste biomass, a versatile natural resource derived from plants, has gained significant attention for its potential in the sustainable production of biobased chemicals. Furfural (FAL), xylo-oligosaccharides (XOSs), and reducing sugars are important platform chemicals, which can be obtained through valorization lignocellulosic solid biomass green way. Waste yellow bamboo (YB) is one kind abundant, inexpensive, renewable resource. In order to improve high-value utilization rate raw YB, biochar-based acid catalyst (AT-Sn-YB) was utilized assist hydrothermal pretreatment YB water. Under optimal reaction conditions (200 °C, 60 min, AT-Sn-YB dosage 5.4 wt%), FAL yield reached 60.8%, 2.5 g/L XOSs system. It observed that surface structure became rough loose, exposing number pores. The accessibility increased 101.8 mg/g 352.6 after combined treatment. area hydrophobicity lignin were 70.7 m2/g L/g, respectively, significantly lower than those untreated (195.4 4.1 respectively). residues treatment subjected enzymatic saccharification, achieving an hydrolysis efficiency 47.9%. Therefore, assisted by shows application value utilization, providing references other materials.

Language: Английский

Integrated biorefinery process for dual production of fermentable sugars and functional humic acids from lignocellulose

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 143185 - 143185

Published: April 1, 2025

Language: Английский