The set-up of biorefineries for the valorization of lignocellulosic biomass will be core in the future to reach sustainability targets. In this area, biomass-degrading enzymes are attracting significant research interest for their potential in the production of chemicals and biofuels from renewable feedstock. Glutathione-dependent β-etherases are emerging enzymes for the biocatalytic depolymeri...

Thermochemical processing of lignin ends up with a major problem which is the high yield char remained from conversion, causing low yields desired products. The ReS2/Al2O3 catalyst, used in this work, exhibited char-suppressing potential and hydrodeoxygenation efficiency reductive liquefaction kraft lignin. Compared to NiMo/Al2O3, as conventional sulfide showed significantly better catalytic pe...

Hydro-depolymerization is a novel method for converting agricultural waste into eco-friendly and promising products. Due to the complex structure composition of corn cob (CC), three-step process was developed, which involved pre-hydro-depolymerization hemicellulose, alkaline extraction lignin, hydro-depolymerization cellulose. The step at first optimized produce five-carbon six-carbon sugars, a...

Practical, high-yield lignin depolymerization methods could greatly increase biorefinery productivity and profitability. However, development of these methods is limited by the presence of interunit carbon-carbon bonds within native lignin, and further by formation of such linkages during lignin extraction. We report that adding formaldehyde during biomass pretreatment produces a soluble lignin...

Lignin, one of the main biopolymers in lignocellulosic biomass, is a promising feedstock for producing aromatic chemicals and BTX-fuels. Despite high availability, lignin remains under-valorized to chemical formation motivating research towards upgrading through depolymerization. Catalytic approaches are particularly studied since they can influence selectivity Next thermal or acid/base depolym...

Lignocellulose is considered one of the significant recalcitrant materials and also difficult to break down because its complex structure. Different microbes such as bacteria fungi are responsible for breaking these lignin structures. This article discussed briefly lignin-degrading their critical steps involved in depolymerization. In addition, regarded ideal microorganism degradation highly ef...

The effect of horseradish peroxidase/H(2)O(2) in organic medium (dioxane/aqueous buffer, pH 5, 95:5) on the depolymerization of synthetic (dehydrogenatively polymerized) lignin was reinvestigated. In contrast to previous claims [Dordick, J. S., Marletta, M. A. & Klibanov, A. M. (1986) Proc. Natl. Acad. Sci. USA 83, 6255-6257], our results demonstrated that vigorous depolymerization of this subs...

The effects of reaction parameters on catalytic depolymerization of alkali lignin in suband super-critical ethanol were investigated using a high pressure autoclave, and the liquid oil and solid char products were characterized. The experimental data indicated that Rh catalysis, controlling reaction conditions at ethanol critical temperature (240 oC) and pressure (7.0 MPa), high ethanol/water r...

The effect of corn stover lignin structure alteration caused by white-rot fungi pretreatment on the pyrolysis kinetics was studied by FTIR and TG/DTA. Results showed that biopretreatment had a remarkable effect on lignin pyrolysis. Biopretreatment can decrease the activation energy and increase the pre-exponential factor in the initial stage of pyrolysis, which makes it possible to start the li...