Composition and structure of an antioxidant acetic acid lignin isolated from shoot shell of bamboo (Dendrocalamus Latiforus)

Structural Characterization of Lignin and Its Degradation Products with Spectroscopic Methods

“…Additionally, acetic acid lignin possessed a molecular weight 2789 Da and a narrow polydispersity index (i.e., M w / M n = 1.54). Higher phenolic hydroxyl group content and S/ G ratio were also obtained in this lignin compared to MWL [33]. Enzymatic mild acidolysis lignin (EMAL) is obtained from acidolysis of CEL with dilute acid, such as hydrochloric acid.…”

“…Modifications were introduced to reduce these errors [32]. A modified acidolysis process was carried out by Gong et al [33]. The acetic acid lignin from bamboo shoot shell had a higher yield of lignin (74 wt%) and lower content of associated carbohydrates (2.96 wt%) than MWL (5.16 wt%).…”

Fine Chemicals Prepared by Bamboo Lignin Degradation through Electrocatalytic Redox between Cu Cathode and Pb/PbO2 Anode in Alkali Solution

“…Structurally, lignin is atactic and complex biomacromolecule that is composed of three main monolignols i. e., p ‐coumaryl alcohol, coniferyl alcohol, and sinapyl alcohol. These monolignols are randomly connected with each other by various C−O‐C (e. g., β ‐O‐4′, α ‐O‐4′) and C−C (e. g., β ‐ β ′, β ‐5′) bonds to form the skeleton of lignin molecules …”

Study on the cleavage of alkyl-O-aryl bonds by in situ generated hydroxyl radicals on an ORR cathode

“…[11][12][13][14][15][16][17][18][19][20][21] However, the recovery of these catalysts and the high cost of organic oxidants hinder the large-scale application. [22][23][24] Reactive oxygen species (ROS), mainly H 2 O 2 , cOH, and cO 2 À , could attack the active site on the benzene ring, leading to the breaking of benzene ring from its side chain. 25 ROS could be continuously produced through the oxygen reduction reaction (ORR) on cathode thus avoiding extra expensive reagents.…”