A novel ternary combination of deep eutectic solvent-alcohol (DES-OL) system for synergistic and efficient delignification of biomass

Kandanelli, Ramesh; Chiranjeevi, T.; Mangala, Ramkumar; Rao, Peddy V.C.; Gandham, Sriganesh; Velankar, Harshad Ravindra

doi:10.1016/j.biortech.2018.06.002

Cited by 69 publications

(25 citation statements)

References 16 publications

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“…ChCl:oxalic acid 1:1 Cosolvents: butanol, n-propanol and ethyl acetate [DES/cosolvent ratio 1:2, 1:1, 2:1] Rice husk, rice straw/50-80-120 • C 1 h and wheat straw Delignification using the ternary combination system (DES-n-butanol) was at least 50% higher than that of pure DES treatment (23-31% delignification). [75] ChCl:oxalic acid 2:1, 1:1 and 1: ChCl-p-hydroxybenzoic acid showed the best performance in terms of delignification (69%) and digestibility of glucan and xylan (90.8% and 88.9%).…”

Section: Use Of Des For the Treatment Of Lignocellulosic Biomassmentioning

confidence: 99%

“…The effects of the presence of alcohol as a cosolvent in a DES system on its delignification performance were studied by Kandaelli et al [75]. They examined three different biomasses and a single DES system, consisting of ChCl and oxalic acid (1:1 molar ratio), to investigate the influence of alcohol (butanol, n-propanol and ethyl acetate) on the delig-nification process.…”

Section: Alcohols and Organic Solventsmentioning

confidence: 99%

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Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Scelsi

Angelini

Pastore

2021

Biomass

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The growing demand for energy and materials in modern society pushes scientific research to finding new alternative sources to traditional fossil feedstocks. The exploitation of biomass promises to be among the viable alternatives with a lower environmental impact. Making biomass exploitation technologies applicable at an industrial level represents one of the main goals for our society. In this work, the most recent scientific studies concerning the enhancement of lignocellulosic biomasses through the use of deep eutectic solvent (DES) systems have been examined and reported. DESs have an excellent potential for the fractionation of lignocellulosic biomass: the high H-bond capacity and polarity allow the lignin to be deconvolved, making it easier to break down the lignocellulosic complex, producing a free crystallite of cellulose capable of being exploited and valorised. DESs offer valid alternatives of using the potential of lignin (producing aromatics), hemicellulose (achieving furfural) and cellulose (delivering freely degradable substrates through enzymatic transformation into glucose). In this review, the mechanism of DES in the fractionation of lignocellulosic biomass and the main possible uses for the valorisation of lignin, hemicellulose and cellulose were reported, with a critical discussion of the perspectives and limits for industrial application.

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Section: Use Of Des For the Treatment Of Lignocellulosic Biomassmentioning

confidence: 99%

Section: Alcohols and Organic Solventsmentioning

confidence: 99%

Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Scelsi

Angelini

Pastore

2021

Biomass

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“…ChCl-lactic acid provided 100% hemicellulose extraction, 88% delignification, and 50% lignin pellet extraction from oil palm empty fruit bunch. Kandanelli et al [74] presented the utilization of DES together with different cosolvents, such as phloroglucinol, HCl, n-butanol, and ethyl acetate, for the efficient delignification of rice husk, rice straw, and wheat straw. They studied the effect of the type of cosolvent, DES-cosolvent ratio (2:1, 1:1, and 1:2), and temperature (50, 80, and 120°C) on the delignification process.…”

Section: Fractionation Of Agro-industrial Wastes With Deep Eutectic Solvents and Recovery Of Ligninmentioning

confidence: 99%

Use of Deep Eutectic Solvents in the Treatment of Agro-Industrial Lignocellulosic Wastes for Bioactive Compounds

Ünlü¹,

Takaç²

2021

Agroecosystems – Very Complex Environmental Systems

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Lignocellulose is the most abundant component in nature since it refers to plant material. Beyond the enormous utilization of lignocellulose by human being, unignorable amount of waste is also formed simultaneously. Agro-industrial lignocellulosic wastes can cause environmental pollutions if not processed before discharged. An innovative approach for lowering the detrimental influences of lignocellulosic wastes is to consider them as a source of useful products rather than a waste to be decontaminated. Beyond the conventional techniques for evaluation of the wastes, new emerging techniques and the use of new solvents have drawn attention recently. Among new generation solvents, deep eutectic solvents (DESs) have been increasingly used in the treatment of lignocellulosics to produce value-added products such as biofuels, chemicals, and solvents and also used for the recovery of bioactive phenolic compounds. DESs are used extensively for fractionation of lignocellulosic wastes, often in combination with enzymatic hydrolysis of the biomass. On the other hand, extraction and recovery of bioactive compounds are also under research using DESs. This mini review summarizes the very recent literature reports on the use of DESs in treating agro-industrial wastes within the concept of valorization of biomass.

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“…The cellulose content enhancement after pretreatment may be due to the alteration in biomass structure and crystalline cellulose which might have increased the overall cellulose availability (Kumar and Parikh, 2015). Kandanelli et al, (2018) reported the removal of about 50% lignin from lignocellulosic biomass by using n-butanol assisted DES (ChCl: OA) at solid loading of 15 % (w/v)at 120°C for 60 min. Kumar et al, (2016) reported that approximately 58% lignin was removed from rice straw after pretreatment with NADES.…”

Section: Pretreatment Of Rice Strawmentioning

confidence: 99%

Pretreatment of Rice Straw using Deep Eutectic Solvent and Saccharification of Pretreated Residue by Crude Cellulase Enzyme

Maan¹,

Sengar²

2019

Int.J.Curr.Microbiol.App.Sci

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A novel ternary combination of deep eutectic solvent-alcohol (DES-OL) system for synergistic and efficient delignification of biomass

Cited by 69 publications

References 16 publications

Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Deep Eutectic Solvents for the Valorisation of Lignocellulosic Biomasses towards Fine Chemicals

Use of Deep Eutectic Solvents in the Treatment of Agro-Industrial Lignocellulosic Wastes for Bioactive Compounds

Pretreatment of Rice Straw using Deep Eutectic Solvent and Saccharification of Pretreated Residue by Crude Cellulase Enzyme

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