New deep eutectic solvent assisted extraction of highly pure lignin from maritime pine sawdust (Pinus pinaster Ait.)

Fernandes, Catarina Marques; Melro, Elodie; Magalhães, Solange; Alves, Luís; Craveiro, Rita; Filipe, Alexandra; Valente, Artur J.M.; Martins, Gabriela Botelho; Antunes, Filipe E.; Romano, Anabela; Medronho, Bruno

doi:10.1016/j.ijbiomac.2021.02.088

Cited by 84 publications

(65 citation statements)

References 72 publications

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“…Extraction yields were calculated as the average of extracted residue in duplicate and total lignin recovery was determined based on the residue yield and lignin purity [24].…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies demonstrate the suitability of eutectic solvents and ionic liquids for biomass fractionation [20][21][22][23][24]. These systems are reasonably easy to prepare in a pure state, do not require the presence of any solvent and produce no waste.…”

Section: Ohmentioning

confidence: 99%

“…This acid, obtained from fructose or cellulose, with a high yiels, is catalyzed by homogeneous or heterogeneous acid [26]. Also, FA pulping is one of the most promising organosolv-based fractionation chemicals, allowing an efficient fractionation of the raw biomass into a cellulose-rich fraction, a water-soluble fraction rich in sugars and a lignin fraction [24]. FA can be easily recovered by distillation [27].…”

Section: Ohmentioning

confidence: 99%

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Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

Magalhães

Filipe

Melro

et al. 2021

Preprint

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Lignocellulosic biomass fractionation is typically performed using methods that are somehow harsh to the environment, such as in the case of the kraft pulping. In recent years, the development of new sustainable and environmentally friendly alternatives has grown significantly. Among the developed systems, bio-based solvents emerge as promising alternatives for biomass processing. Therefore, in the present work, the bio-based and renewable chemicals, levulinic acid (LA) and formic acid (FA), were combined to fractionate lignocellulosic waste (i.e., Maritime pine sawdust) and isolate lignin. Different parameters, such as LA/FA ratio, temperature, and extraction time, were optimized to boost the yield and purity of extracted lignin. The LA/FA ratio was found to be crucial regarding the superior lignin extraction from the waste biomass. Moreover, the increase in temperature and extraction time enhances the amount of extracted residue but compromises the lignin purity and reduces its molecular weight. The electron microscopy images revealed that biomass samples suffer significant structural and morphological changes, which further suggests the suitability of the new developed bio-fractionation process. Same was concluded by the FTIR analysis, in which no remaining lignin was detected in the cellulose-rich fraction. Overall, the novel combination of bio-sourced FA and LA has shown to be a very promising system for lignin extraction of high purity from biomass waste, thus contributing to extend the opportunities of lignin manipulation and valorisation into novel added-value biomaterials.

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“…Extraction yields were calculated as the average of extracted residue in duplicate and total lignin recovery was determined based on the residue yield and lignin purity [24].…”

Section: Discussionmentioning

confidence: 99%

Section: Ohmentioning

confidence: 99%

Section: Ohmentioning

confidence: 99%

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Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

Magalhães

Filipe

Melro

et al. 2021

Preprint

Self Cite

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“…Currently, extensive research is being done to replace fossil fuels with renewable energy sources, such as lignin [ 100 , 101 ]. Extraction of lignin from maritime pine ( Pinus pinaster ) wood using several pure and aqueous DES mixtures was reported by Fernandes et al [ 69 ]. The experiments were performed at an extraction temperature of 150 °C for 2 h with a solid-solvent ratio of 1:10.…”

Section: Phenolic Compound Extraction From Natural Sourcesmentioning

confidence: 99%

Latest Insights on Novel Deep Eutectic Solvents (DES) for Sustainable Extraction of Phenolic Compounds from Natural Sources

et al. 2021

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Phenolic compounds have long been of great importance in the pharmaceutical, food, and cosmetic industries. Unfortunately, conventional extraction procedures have a high cost and are time consuming, and the solvents used can represent a safety risk for operators, consumers, and the environment. Deep eutectic solvents (DESs) are green alternatives for extraction processes, given their low or non-toxicity, biodegradability, and reusability. This review discusses the latest research (in the last two years) employing DESs for phenolic extraction, solvent components, extraction yields, extraction method characteristics, and reviewing the phenolic sources (natural products, by-products, wastes, etc.). This work also analyzes and discusses the most relevant DES-based studies for phenolic extraction from natural sources, their extraction strategies using DESs, their molecular mechanisms, and potential applications.

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“…For rice husks, beech wood, loblolly pine, tree heather, and gum rockrose, other researchers have reported lignin removal with DES pretreatment [10,[20][21][22]. Lignin has also been reported to be effectively removed from maritime pine wood sawdust and pine wood powder [18,23]. However, the wood particles in sawdust are very different in structure compared to pine needles.…”

Section: Fiber Analysismentioning

confidence: 99%

Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents

Gujjula

Kumar

Lynam

2021

Biomass

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Deep eutectic solvents (DES) are new ‘green’ solvents that have a high potential for biomass processing because of their low cost, low toxicity, biodegradability, and easy recycling. When Loblolly pine trees are harvested, their branches with needles are typically left in brush piles and decompose very slowly. Exploring the effect of DES pretreatment on waste pine needles was the goal of the present work. Loblolly pine needles were treated with three types of DES to prepare the biomass for enzymatic hydrolysis to glucose, a subject not readily found in the literature. The resulting products were analyzed by Fourier transform infrared spectroscopy, fiber analysis, and high-performance liquid chromatography. Glucose yields after pretreatment and hydrolysis were found to be six times that for untreated biomass with two of the DES. Fiber analysis indicated removal of lignin, hemicellulose, and ash from the needle biomass. Enhanced glucose yield was due to removal of lignin and disruption of biomass structure during pretreatment, so that the pretreated biomass was rich in cellulosic content. Based on the results shown in this study, among the three types of DES, formic acid:choline chloride and acetic acid:choline chloride pretreatment had better potential for biomass pretreatment compared to lactic acid:choline chloride.

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New deep eutectic solvent assisted extraction of highly pure lignin from maritime pine sawdust (Pinus pinaster Ait.)

Cited by 84 publications

References 72 publications

Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

Lignin Extraction from Waste Pine Sawdust Using a Biomass Derived Binary Solvent System

Latest Insights on Novel Deep Eutectic Solvents (DES) for Sustainable Extraction of Phenolic Compounds from Natural Sources

Pretreatment of Loblolly Pine Tree Needles Using Deep Eutectic Solvents

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