Determination of Lignin-Carbohydrate Complexes Structure of Wheat Straw using Carbon-13 Isotope as a Tracer

Yao, Lan; Chen, Congxin; Zheng, Xin-Qiang; Peng, Ziqian; Hu, Yang; Xie, Yimin

doi:10.15376/biores.11.3.6692-6707

Cited by 18 publications

(13 citation statements)

References 32 publications

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“…Herbaceous plants show significantly higher amounts of LCC linkages than woody materials. The quantification of lignin–carbohydrate linkages in herbaceous plants demonstrates the existence of a vast majority of phenyl glycosidic linkages in LCC [ 23 , 24 ]. The quantification of lignin–carbohydrate linkages in various LCC is presented in Table 1 .…”

Section: Quantity Of Lignin–carbohydrate Bonds In Wood and Non-wood Smentioning

confidence: 99%

“…In addition, xylan is reported as a main component-binding lignin and carbohydrates in bamboo, rice straw, and ryegrass [ 72 , 81 – 83 ]. It is proposed that lignin in wheat straw is bound to glucan and xylan moieties via ferulate acid and PhyGlc linkages, respectively [ 23 , 84 ]. In another study, You et al [ 24 ] suggest that PhyGlc bonds exist between cellulose and lignin in herbaceous plants due to the abundance of these bonds.…”

Section: Non-wood Lcc Structurementioning

confidence: 99%

“…LCC extracted from non-wood species features a very wide range of molecular weights. The MW of LCC from Prunella vulgaris is estimated to be 8500 g/mol [ 92 ], whereas the MW of wheat straw LCC is around 38,700 g/mol [ 23 ].…”

Section: Lcc Propertiesmentioning

confidence: 99%

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Lignin–carbohydrate complexes: properties, applications, analyses, and methods of extraction: a review

Tarasov

Leitch

Fatehi

2018

Biotechnol Biofuels

386

177

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The complexity of lignin and hemicellulose segmentation has been known since the middle of the ninetieth century. Studies confirmed that all lignin units in coniferous species and 47–66% of lignin moieties in deciduous species are bound to hemicelluloses or cellulose molecules in lignin–carbohydrate complexes (LCC). Different types and proportions of lignin and polysaccharides present in biomass lead to the formation of LCC with a great variety of compositions and structures. The nature and amount of LCC linkages and lignin substructures affect the efficiency of pulping, hydrolysis, and digestibility of biomass. This review paper discusses the structures, compositions, and properties of LCC present in biomass and in the products obtained via pretreating biomass. Methods for extracting, fractionating, and analyzing LCC of biomass, pulp, and spent pulping liquors are critically reviewed. The main perspectives and challenges associated with these technologies are extensively discussed. LCC could be extracted from biomass following varied methods, among which dimethyl sulfoxide or dioxane (Björkman’s) and acetic acid (LCC-AcOH) processes are the most widely applied. The oxidation and methylation treatments of LCC materials elucidate the locations and frequency of binding sites of hemicelluloses to lignin. The two-dimensional nuclear magnetic resonance analysis allows the identification of the structure and the quantity of lignin–carbohydrate bonds involved in LCC. LCC application seems promising in medicine due to its high anti-HIV, anti-herpes, and anti-microbial activity. In addition, LCC was successfully employed as a precursor for the preparation of spherical biocarriers.

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Section: Quantity Of Lignin–carbohydrate Bonds In Wood and Non-wood Smentioning

confidence: 99%

Section: Non-wood Lcc Structurementioning

confidence: 99%

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Lignin–carbohydrate complexes: properties, applications, analyses, and methods of extraction: a review

Tarasov

Leitch

Fatehi

2018

Biotechnol Biofuels

386

177

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“…Non-covalent dipole-dipole bonds and hydrogen bond interactions between lignin-hemicellulose and covalent bonds between lignin-carbohydrate complexes (LCCs) form major recalcitrance features for grass cell wall during pretreatment (Yaich et al 2017). The coupling of monolignols during lignin backbone formation and alcohol and carboxylic groups from hemicelluloses forms the LCCs and lignin-hemicellulose interactions, respectively, via a benzyl ether/ester bond or an acetal bond in wheat straw (Eudes et al 2014;Yao et al 2016). Potentially, candidate phenolic monomers such as caffeates, catechins with o-diphenol functionality are validated to decrease the cross-linkages of cell wall components (MacAdam and Grabber 2002).…”

Section: Lignin With Less Cross-linkage To Cell Wall Polysaccharidesmentioning

confidence: 99%

Engineering grass biomass for sustainable and enhanced bioethanol production

Mohapatra

Mishra

Bhalla

et al. 2019

Planta

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Main conclusion Bioethanol from lignocellulosic biomass is a promising step for the future energy requirements. Grass is a potential lignocellulosic biomass which can be utilised for biorefinery-based bioethanol production. Grass biomass is a suitable feedstock for bioethanol production due to its all the year around production, requirement of less fertile land and noninterference with food system. However, the processes involved, i.e. pretreatment, enzymatic hydrolysis and fermentation for bioethanol production from grass biomass, are both time consuming and costly. Developing the grass biomass in planta for enhanced bioethanol production is a promising step for maximum utilisation of this valuable feedstock and, thus, is the focus of the present review. Modern breeding techniques and transgenic processes are attractive methods which can be utilised for development of the feedstock. However, the outcomes are not always predictable and the time period required for obtaining a robust variety is generation dependent. Sophisticated genome editing technologies such as synthetic genetic circuits (SGC) or clustered regularly interspaced short palindromic repeats (CRISPR) systems are advantageous for induction of desired traits/heritable mutations in a foreseeable genome location in the 1st mutant generation. Although, its application in grass biomass for bioethanol is limited, these sophisticated techniques are anticipated to exhibit more flexibility in engineering the expression pattern for qualitative and qualitative traits. Nevertheless, the fundamentals rendered by the genetics of the transgenic crops will remain the basis of such developments for obtaining biorefinery-based bioethanol concepts from grass biomass.

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“…4,5 The methods employed for the determination of carbohydrates are found to be essentially relevant because these compounds are widely used in the food and pharmaceutical industries, apart from their usefulness as precursors in the production of chemicals and biofuel. [6][7][8][9][10] In view of that, it has become, undoubtedly, crucial to develop efficient analytical methods with high precision and limits of detection suitable for routine analyses and determination of carbohydrates. The main goal is to help reduce industrial losses and contribute toward the optimization and control of processes aiming at generating high value-added products.…”

Section: Introductionmentioning

confidence: 99%

New Detector Based on Composite of Carbon Nanotubes with Nanoparticles of Cobalt Oxide for Carbohydrates Analysis by HPLC with Reverse Pulsed Amperometric Detection

Sá¹,

Paim²,

Stradiotto³

2020

J. Braz. Chem. Soc.

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This work aims to present an alternative detector for the determination of arabinose, galactose, glucose and xylose in hydrolyzed sugarcane bagasse. The detector was developed using an electrode modified with multi-walled carbon nanotubes containing cobalt oxide nanoparticles (GCE/MWCNT/CoOOH) applied in high-performance liquid chromatography (HPLC) with reverse pulsed amperometric detection (RPAD). The limits of detection obtained were 3.4 × 10 −6 , 4.4 × 10 −6 , 3.6 × 10 −6 and 5.0 × 10 −6 mol L −1 for arabinose, galactose, glucose and xylose, respectively. The standard addition method was used to determine the concentration of sugars in the hydrolyzed sugarcane. The determined concentrations for arabinose, galactose, glucose, and xylose were 1.0 × 10 −3 , 7.2 × 10 −5 , 3.0 × 10 −3 and 2.4 × 10 −3 mol L −1 , respectively. The results demonstrate that this new method can be used for the detection of sugars without the interference of other electroactive species.

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Determination of Lignin-Carbohydrate Complexes Structure of Wheat Straw using Carbon-13 Isotope as a Tracer

Cited by 18 publications

References 32 publications

Lignin–carbohydrate complexes: properties, applications, analyses, and methods of extraction: a review

Lignin–carbohydrate complexes: properties, applications, analyses, and methods of extraction: a review

Engineering grass biomass for sustainable and enhanced bioethanol production

New Detector Based on Composite of Carbon Nanotubes with Nanoparticles of Cobalt Oxide for Carbohydrates Analysis by HPLC with Reverse Pulsed Amperometric Detection

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