Lignin extraction distinctively enhances biomass enzymatic saccharification in hemicelluloses-rich Miscanthus species under various alkali and acid pretreatments

Si, Shengli; Yan, Chen; Fan, Chunfen; Liu, Ying; Huang, Jiangfeng; Liao, Haofeng; Hu, Bo; Li, Qing; Tu, Yuanyuan

doi:10.1016/j.biortech.2015.02.031

Cited by 121 publications

(68 citation statements)

References 28 publications

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“…In other words, observability of filamentous structures of cellulose microfibrils at SEM images are good indicators for cellulose purity. 3 M NaOH + 3 M H2O2 treatment condition had removed 99.5% of hemicellulose and 81.6% of lignin, which prevents industrial evaluation of cellulose such as bioethanol production by inhibition of cellulase enzyme (Si et al, 2015;Talebnia et al, 2010). In other words, the alkaline peroxide treatment increased the purity of cellulose by removing most of hemicellulose and lignin, which was supported with FTIR spectra.…”

Section: Sem Imagesmentioning

confidence: 70%

“…Also, since the alkaline peroxide treatment condition released the cellulose microfibrils, they became reachable for further processes such as enzymatic modifications. Therefore, by using known methods, the cellulose end product can be converted to other products such as degradation to glucose for bioethanol production (Si et al, 2015;Talebnia et al, 2010), or modification to other cellulosic products such as cellulose ethers, cellulose esters (Klemm et al, 2005) and oxidized cellulose (Isobe et al, 2013).…”

Section: Sem Imagesmentioning

confidence: 99%

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Isolation of cellulose and hemicellulose by using alkaline peroxide

Tezcan¹,

Atici²

2017

Natural and Engineering Sciences

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Fall leaves are biodegraded and composted naturally in forests but they are wastes for urban areas. Moreover, they are widely available cellulose sources but have limited applications. Alkaline peroxide treatment of bioresources is one of the most widely studied clean methods for both delignification and hemicellulose removal but there is no study about application of that method on fall leaves at room temperature. In this study, the effect of alkaline peroxide treatment of fall leaves at room temperature on hemicellulose recovery and cellulose delignification were investigated. Fall leaves (FL) were treated with 0.3-3.0 M NaOH + 0-3 M H2O2 at room temperature. Hemicellulose recovery and cellulose delignification values were analyzed. Hemicellulose recovery and cellulose delignification increased and yield decreased by increasing NaOH and H2O2 concentrations. Hemicellulose recovery and cellulose delignification reached to the maximum levels, 99.5% and 81.6% respectively, at 3M NaOH + 3M H2O2 treatment condition. The end products were confirmed by analytically, spectrally and morphologically. Wasted fall leaves were turned into useful hemicellulose and cellulose products by using clean alkaline peroxide treatment at room temperature. The products can be further processed by known methods into other industrial products.

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Section: Sem Imagesmentioning

confidence: 70%

Section: Sem Imagesmentioning

confidence: 99%

Isolation of cellulose and hemicellulose by using alkaline peroxide

Tezcan¹,

Atici²

2017

Natural and Engineering Sciences

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“…[126]. Moreover, IL pretreatment could improve lignocellulose enzymatic saccharification in biomass samples with low cellulose CrI and low lignin levels [127][128][129][130], by comparison mild alkali pretreatment in Miscanthus efficiently extracts G-rich lignin for high biomass digestibility [125]. Recently, in Miscanthus stem have presented that two-step pretreatments with 2% NaOH and 1% H 2 SO 4 are optimal for improving biomass digestion in hemicelluloses-rich samples via the efficient co-extraction of hemicelluloses and lignin [131][132][133][134][135].…”

Section: Chemical Pretreatmentmentioning

confidence: 99%

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

Madadi¹,

Penga²,

Abbas³

2017

J Plant Biochem Physiol

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Lignocellulose biomass derived from plant cell walls is a rich source of biopolymers for the production of biofuels. Biomass recalcitrance is the noticeable and main features of lignocellulose which can reduces by genetic modification of plant cell wall. The aim of the present review is to provide the reader a new insight for enhancing biomass yield and biofuels production. This can be issued by focusing on major perennial grasses, cereal crops and woody feedstock which have high biomass yield or large biomass residues and also the effects of distinctive cell wall polymers (cellulose, hemicellulose, lignin, and pectin) on the enzymatic saccharification of biomass under different pretreatments. Moreover the present review paper will also major gene candidates which are involved plant cell wall biosynthesis, degradation and modification for improving biomass yield and digestibility in transgenic plants and genetic mutants.

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“…Several pretreatment processes and technologies have been suggested for the fractionation and recovery of valuable components from LCMs (Sánchez and Cardona 2008;Tunc and van Heiningen 2008a,b;Kumar et al 2009;Song et al 2011;Si et al 2015). Biomass pretreatments change the structure of LCMs and remove structural constituents from the feedstocks, making the pretreated materials more accessible for further fractionation and conversion techniques, such as alkaline pulping (Yang and Wyman 2004;Hendriks and Zeeman 2009;Gírio et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, and Pulping Outcomes

Lehto

Alén

2015

BioResources

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The chemical industry is being forced to evaluate new strategies for more effective utilization of renewable feedstocks to diminish the use of fossil resources. In this literature review, the integration of both acidic and alkaline pretreatment phases of hardwood and softwood chips with chemical pulping is discussed. Depending on the pretreatment conditions, high-volume sulfur-free fractions with varying chemical compositions can be produced. In case of acidic pretreatments, the major products include carbohydrates (mono-, oligo-, and polysaccharides), whereas under alkaline (i.e., aqueous NaOH) pretreatment conditions, the sulfur-free fractions of aliphatic carboxylic acids, lignin, and extractives are primarily obtained. All these fractions are potentially interesting groups of compounds and can be used in a number of applications. Finally, the effects of pretreatments on pulping are also considered. Although it is believed that there are important advantages to be gained by integrating this type of renewable raw material-based production, in particular, with kraft pulping, sulfur-free pulping methods such as soda-AQ and oxygen/alkali delignification processes are also briefly discussed.

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Lignin extraction distinctively enhances biomass enzymatic saccharification in hemicelluloses-rich Miscanthus species under various alkali and acid pretreatments

Cited by 121 publications

References 28 publications

Isolation of cellulose and hemicellulose by using alkaline peroxide

Isolation of cellulose and hemicellulose by using alkaline peroxide

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, and Pulping Outcomes

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