Variations of lignin–lignin and lignin–carbohydrate linkages from young Neosinocalamus affinis bamboo culms

Zhang, Bing; Fu, Gen-Que; Niu, Ya-Shuai; Peng, Feng; Chen, Yao; Sun, Run‐Cang

doi:10.1039/c5ra24819a

Cited by 24 publications

(19 citation statements)

References 47 publications

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“…LCC linkage plays a crucial role in wood structure, since all lignin moieties in softwoods [ 19 ] and 47–66% of lignin fragments in hardwoods [ 20 ] are bound to carbohydrates, mainly to hemicellulose [ 21 ]. Numerous studies report the presence of LCC in native biomass materials in coniferous, deciduous, and non-wood plants [ 19 , 22 – 25 ]. Due to its strong bonding, the presence of LCC affects the overall extraction of lignin and carbohydrates [ 16 , 24 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

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

Tarasov

Leitch

Fatehi

2018

Biotechnol Biofuels

406

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: Introductionmentioning

confidence: 99%

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

Tarasov

Leitch

Fatehi

2018

Biotechnol Biofuels

406

177

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“…2). Both of H H and H L showed obvious absorption at 3408 cm À1 and 2939 cm À1 , which were attributed to the O-H stretching vibration of the hydroxyl groups and C-H (CH 2 and CH 3 ) stretching vibrations in hemicelluloses, 15 respectively. The FT-IR spectra also demonstrated that the hemicelluloses can be obtained from holocellulose without cleaving the acetyl ester groups by the treatment with water, in which the absorption around 1736 cm À1 represented the C]O stretching of acetyl groups in the region of the carbonyl stretching vibration.…”

Section: Composition Study Of H L and H Hmentioning

confidence: 99%

Comparison of emulsifying capacity of two hemicelluloses from moso bamboo in soy oil-in-water emulsions

Yue

Hao

et al. 2020

RSC Adv.

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“…Fourier transform infrared (FT-IR), as a rapid and nondestructive method, has been vastly utilized for analyzing a variety of rich and unique materials including biological materials. 13,[15][16][17][19][20][21][22][23][24][25][26][27][28][29] IR spectra provide a beneficial information about the hydrogen bonding (intra-and inter-chain) and C-O bonding in cellulose. Several researchers studied the hydrogen bonding in cellulose I β and has demonstrated that FT-IR method is able to provide intense information about intrachain H-bond (O2-H2···O6 and O3-H3···O5) and interchain H-bond (O6-H6···O3`and O2`), located between 3500 and 3200 cm -1 .…”

Section: Analytical Sciencesmentioning

confidence: 99%

“…13,[21][22][23][24][25][26] Furthermore, FT-IR spectroscopy has been used as an indirect method to examine the lignin and carbohydrate linkage. [27][28][29]…”

Section: Analytical Sciencesmentioning

confidence: 99%

Surface Structural Transformation of Pre-carbonized Solid Biomass from Japanese Cedar via ATR-FTIR and PCA

2019

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This present research applied the ATR-FTIR technique and principle component analysis (PCA) to investigate molecular surface changes in the pre-carbonized solid biomass, so call Kindai Bio-coke and Japanese cedar which is utilized as an alternative to coal coke in the cupola furnace of the steel industry in order to reduce the CO 2 emissions. The aim is to explore what can be the key to improve the BIC products applications from the fundamental molecular scale by using PCA to distinguish between changes during the BIC transformation and the differences in BIC samples. Results revealed that transformation occured at the surface of Japanese cedar raw materials and Japanese cedar BIC. Major changes were observed in the O-H, C-H and CO stretching regions. The intensity of the IR bands attribute to aliphatic methyl (CH 3) and methylene (CH 2) stretching modes increased while a weak O-H stretching intensity associated with BIC hydrophobic characteristic decreased.

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Variations of lignin–lignin and lignin–carbohydrate linkages from young Neosinocalamus affinis bamboo culms

Abstract: Three lignin–carbohydrate complex (LCC) preparations were isolated to elucidate the variations of chemical linkages during growth in the early development stages of Neosinocalamus affinis bamboo culms.

Cited by 24 publications

References 47 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

Comparison of emulsifying capacity of two hemicelluloses from moso bamboo in soy oil-in-water emulsions

Surface Structural Transformation of Pre-carbonized Solid Biomass from Japanese Cedar via ATR-FTIR and PCA

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