Catalytic oxidation of native lignin to phenolic monomers: Insight into aldehydes formation and stabilization

Improving 5-(hydroxymethyl)furfural (HMF) tolerance of Pseudomonas taiwanensis VLB120 by automated adaptive laboratory evolution (ALE)

“…This marks another step forward in the pursuit of generating an ideal chassis for whole-cell biocatalytic production of renewable plastic building block FDCA from HMF ( Cui et al, 2023 ). With regard to a potential application of the improved strains as robust hosts for fermentative exploitation of lignocellulosic hydrolysates, future work will need to determine if LDMICs other than HMF and furfural, such as glycolaldehyde, or for example vanillin or p -hydroxybenzaldehyde derived from lignin depolimerization, are similarly well-endured ( Hu et al, 2022 ; Jayakody et al, 2022 ). Additionally, it would be interesting to test how the engineered strains perform in the simultaneous presence of multiple stressors, some of which, unlike the furanic aldehydes HMF and furfural, may be better tolerated with a functional MexEF-OprN efflux pump.…”

Sonochemical oxidation of technical lignin to obtain nanoparticles with enhanced functionality

“…25 An extended amount of work investigating lignin oxidation is based on incorporating and utilizing different chemical catalysts (homogeneous and heterogeneous). A wide variety of compounds have been used as catalyzing agents, starting from the most common metallic ones (like Cu 26 ) to TiO 2 doped with bimetals like Cu-Au or Fe-Au, 27 as well as KOH 28 or KO t Bu. 29 These catalytic agents have been widely used along with other oxidating agents like H 2 O 2 , an extensively used bleaching agent in the paper industry.…”