A comprehensive review on lignin obtained from agro-residues: potential source of useful chemicals

Rishikesh, M.; Harish, S.; Prasanth, Sevalur Mahendran; Prakash, D. Gnana

doi:10.1007/s13399-021-01637-0

Cited by 14 publications

(8 citation statements)

References 182 publications

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“…87 It is generally believed that clustering and aggregation behaviors of hydrotrope prior to or upon the addition of hydrophobic solute dictate the interaction and subsequent hydrotropic solubilization of hydrophobic lignin and extractives. 30,88,89 The size of hydrotropes and composition, concentration, and temperature of hydrotropic solution determine the clustering and aggregation behaviors. 90 2.2.1 Effects of size and composition of hydrotrope on its self-aggregation.…”

Section: Clustering and Aggregation Behaviorsmentioning

confidence: 99%

Recent advances in hydrotropic solvent systems for lignocellulosic biomass utilization

Jeong,

Ryu,

Yang

et al. 2024

Green Chem.

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Section: Clustering and Aggregation Behaviorsmentioning

confidence: 99%

Recent advances in hydrotropic solvent systems for lignocellulosic biomass utilization

Jeong,

Ryu,

Yang

et al. 2024

Green Chem.

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“…Rice straw, as agricultural waste with a huge yield, has so far been studied by researchers for its chemical composition and chemical structural characteristics [ 15 , 16 ] and has the potential for high value utilization in the process of biomass refining [ 17 ]. Through the fundamental research methods of wood chemistry and fiber morphology, herein, fiber morphology, basic chemical composition, lignin structure [ 18 , 19 ], and carbohydrate content and its composition of areca nut husk were systematically examined and compared with those of rice straw (typical straw of Gramineae); additionally, the application potentials of these two short-period agricultural and forestry waste wood fibers as biomass resources were compared. The results of this study will provide useful and reliable basic data for the areca nut husk food processing industry chain and an important reference for improving the economic benefits of the areca nut industry.…”

Section: Introductionmentioning

confidence: 99%

Study on Dissociation and Chemical Structural Characteristics of Areca Nut Husk

et al. 2023

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From the perspective of full-component utilization of woody fiber biomass resources, areca nut husk is an excellent woody fiber biomass feedstock because of its fast regeneration, significant regeneration ability, sustainability, low cost, and easy availability. In this study, fiber cell morphologies, chemical compositions, lignin structures, and carbohydrate contents of areca nut husks were analyzed and compared with those of rice straw, and the application potentials of these two materials as biomass resources were compared. We found that areca nut husk fibers were shorter and wider than those of rice straw; areca nut husk contained more lignin and less ash, as well as less holocellulose than rice straw; areca nut husk and rice straw lignin were obtained by ball milling and phase separation, and areca nut husk lignin was found to be a typical GHS-type lignin. Herein, the yield of lignocresol was higher than that of milled wood lignin for both raw materials, and the molecular size was more homogeneous. Tricin structural monomers were discovered in the lignin of areca nut husk, similar to those present in other types of herbaceous plants. Structures of areca nut husk MWL (AHMWL) and AHLC were comprehensively characterized by quantitative NMR techniques (that is, 1H NMR, 31P NMR, and 2D NMR). The molecular structure of AHLC was found to be closer to the linear structure with more functional groups exposed on the molecular surface, and the hydroxyl-rich p-cresol grafting structure was successfully introduced into the lignin structure. In addition, the carbohydrate content in the aqueous layer of the phase separation system was close to the carbohydrate content in the raw material, indicating that the phase separation method can precisely separate lignin from carbohydrates. These experimental results indicate that the phase separation method as a method for lignin utilization and structure study has outstanding advantages in lignin structure regulation and yield, and areca nut husk lignin is suitable for application in the same phase separation systems as short-period herbs, such as rice straw and wheat grass, and has the advantages of low ash content and high lignification degree, which will provide guidance for the high-value utilization of areca nut husk in the future.

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“…17,18 It has been demonstrated experimentally that a plethora range of useful chemicals and polymers can be derived from lignin, including polyurethanes, curing agents, and even vanillin and vanillic acid through catalytic depolymerization. 19,20 Furthermore, functional materials with improved mechanical properties, heat and moisture resistance, UV-absorbing ability and shapememory materials can be fabricated from lignin through reinforcement composite and chemical modification. [21][22][23][24] Kai et al have reviewed and analyzed the structure of lignin and interestingly, illustrated that it exhibits bactericidal properties due to the presence of double bonds in the α, β-positions of the side chain and the methyl group in the γ position of the phenolic components, but also depends on the origin of biomass, from which lignin is extracted.…”

Section: Introductionmentioning

confidence: 99%

High-purity lignin from selective biomass fractionation with ternary deep eutectic solvents

Tan

Miao

et al. 2023

Green Chem.

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A comprehensive review on lignin obtained from agro-residues: potential source of useful chemicals

Cited by 14 publications

References 182 publications

Recent advances in hydrotropic solvent systems for lignocellulosic biomass utilization

Recent advances in hydrotropic solvent systems for lignocellulosic biomass utilization

Study on Dissociation and Chemical Structural Characteristics of Areca Nut Husk

High-purity lignin from selective biomass fractionation with ternary deep eutectic solvents

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