Lignin fractionation from lignocellulosic biomass using deep eutectic solvents and its valorization

Zhou, Man; Fakayode, Olugbenga Abiola; Yagoub, Abu ElGasim A.; Ji, Qinghua; Zhou, Cunshan

doi:10.1016/j.rser.2021.111986

Cited by 145 publications

(88 citation statements)

References 140 publications

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“…A recent study has identified the potential role of peroxidases in lignification of Casparian strip in Arabidopsis (Rojas-Murcia et al, 2020). Similarly, recent studies have shown the involvement of laccases in lignification in several plants, such as Arabidopsis thaliana (LAC4,11,14,and 17) (Barros et al, 2015), Setaria viridis (SvLAC 9, 13, 15, 50, and 52) (Simoes et al, 2020), walnut endocarp (JrLAC12-1) (Li et al, 2021) and Salvia miltiorrhiza (SmLAC7 and 20) (Zhou et al, 2022). In C. hassleriana, laccase 8 (ChLAC8) has been shown to be involved in the polymerization of caffeyl alcohol to produce C-lignin (Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 88%

“…Furthermore, combining solvent-based technologies with other methods may provide more advantages to existing lignocellulose fractionation facilities in biorefineries. This requires further research to develop strategies for isolating lignin from biomass using organic solvents, ionic liquids (ILs), and deep eutectic solvents (DESs) alone or in combination with thermo, mechanical and microwave-assisted methods (Zhou et al, 2022). The application of ILs for lignin fractionation from biomass has been gaining significant attention due to its nonvolatility, low melting temperatures, thermostability, ecofriendly nature, less impact on cellulose, and shorter reaction time (Rawat et al, 2022).…”

Section: Progress In Lignin Fractionation and Depolymerization Chemic...mentioning

confidence: 99%

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Spatio-Temporal Modification of Lignin Biosynthesis in Plants: A Promising Strategy for Lignocellulose Improvement and Lignin Valorization

Wang

Gui

Jian-gang

et al. 2022

Front. Bioeng. Biotechnol.

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Lignin is essential for plant growth, structural integrity, biotic/abiotic stress resistance, and water transport. Besides, lignin constitutes 10–30% of lignocellulosic biomass and is difficult to utilize for biofuel production. Over the past few decades, extensive research has uncovered numerous metabolic pathways and genes involved in lignin biosynthesis, several of which have been highlighted as the primary targets for genetic manipulation. However, direct manipulation of lignin biosynthesis is often associated with unexpected abnormalities in plant growth and development for unknown causes, thus limiting the usefulness of genetic engineering for biomass production and utilization. Recent advances in understanding the complex regulatory mechanisms of lignin biosynthesis have revealed new avenues for spatial and temporal modification of lignin in lignocellulosic plants that avoid growth abnormalities. This review explores recent work on utilizing specific transcriptional regulators to modify lignin biosynthesis at both tissue and cellular levels, focusing on using specific promoters paired with functional or regulatory genes to precisely control lignin synthesis and achieve biomass production with desired properties. Further advances in designing more appropriate promoters and other regulators will increase our capacity to modulate lignin content and structure in plants, thus setting the stage for high-value utilization of lignin in the future.

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Section: Introductionmentioning

confidence: 88%

Section: Progress In Lignin Fractionation and Depolymerization Chemic...mentioning

confidence: 99%

Spatio-Temporal Modification of Lignin Biosynthesis in Plants: A Promising Strategy for Lignocellulose Improvement and Lignin Valorization

Wang

Gui

Jian-gang

et al. 2022

Front. Bioeng. Biotechnol.

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“…Similar phenomena were reported for deep eutectic solvent (DES) and THF. 36,37 H2O in these cosolvents (e.g., THF/H2O) is considered as an efficient plasticizer favoring organic solvent diffusion into the compact lignin complexes, leading to the solubilization of lignin in solvent-water mixture.…”

Section: Fig 1 Schematic Diagram Of Dmi/h2o Co-solvent Pretreatmentmentioning

confidence: 99%

Efficient pretreatment using dimethyl isosorbide as a biobased solvent for potential complete biomass valorization

Yang

Meng

et al. 2022

Preprint

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An efficient and sustainable pretreatment, such as organosolv pretreatment that produces high-quality lignin and highly digestible carbohydrates, could enable the potential complete utilization of lignocellulosic biomass. Demand for bio-based solvents with a high boiling point, low viscosity, and negligible toxicity is increasing. Herein, we report the use of dimethyl isosorbide (DMI) as a solvent to fractionate lignocellulosic biomass into its main components for the first time. High lignin removal efficiency (91.2%) with good cellulose retention (around 80%) could be achieved during the pretreatment of Eucalyptus by DMI/H2O co-solvents under a mild condition. A near-complete cellulose conversion to its monosaccharide could be realized at a relatively low enzyme loading of 20 FPU g−1 glucan. The addition of water could suppress the condensation of lignin, yielding high-quality lignin with a good fraction of β-O-4 linkages reserved (24.8%) and homogeneous molecular weight (Đ<2) suitable for depolymerization to mono-aromatic chemicals. Besides its highly digestible nature, the high quality of the cellulose-rich residue is also demonstrated from a material perspective. A more efficient fibrillation of obtained pulp to nanocellulose was developed, leading to a promising potential of energy saving compared to the traditional bleaching pathway. Overall, this work developed a mild pretreatment technology as a potential basis for a green and closed-loop biorefinery concept for converting lignocellulosic biomass to multiple products (high-quality lignin, fermentable sugars, or functional materials).

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“…The effective utilization of lignin has many significant advantages ( Huang et al, 2022 ; Yao et al, 2022 ; Zhou et al, 2022 ). Firstly, it can improve the resource utilization efficiency and profitability of lignocellulosic biomass.…”

Section: Introductionmentioning

confidence: 99%

Recent Biotechnology Advances in Bio-Conversion of Lignin to Lipids by Bacterial Cultures

Wang

Peng

et al. 2022

Front. Chem.

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The complexity and recalcitrance of the lignin structure is a major barrier to its efficient utilization and commercial production of high-value products. In recent years, the “bio-funneling” transformation ability of microorganisms has provided a significant opportunity for lignin conversion and integrated biorefinery. Based on the chemical structure of lignin, this mini-review introduces the recent advances of lignin depolymerization by bacterial strains and the application of microbial lignin degradation in lipids production. Furthermore, the current challenges, future trends and perspectives for microbe-based lignin conversion to lipids are discussed.

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Lignin fractionation from lignocellulosic biomass using deep eutectic solvents and its valorization

Cited by 145 publications

References 140 publications

Spatio-Temporal Modification of Lignin Biosynthesis in Plants: A Promising Strategy for Lignocellulose Improvement and Lignin Valorization

Spatio-Temporal Modification of Lignin Biosynthesis in Plants: A Promising Strategy for Lignocellulose Improvement and Lignin Valorization

Efficient pretreatment using dimethyl isosorbide as a biobased solvent for potential complete biomass valorization

Recent Biotechnology Advances in Bio-Conversion of Lignin to Lipids by Bacterial Cultures

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