Comparison Study on the Biomass Recalcitrance of Different Tissue Fractions of Sugarcane Culm

Brienzo, Michel; Ferreira, Solange Oliveira; Vicentim, Marcos Paulo; Souza, Wanderley de; Sant’Anna, Celso

doi:10.1007/s12155-014-9487-8

Cited by 45 publications

(50 citation statements)

References 38 publications

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“…On the other hand, Brienzo et al. suggested that CrI may not have influence in biomass digestibility especially for pretreated materials . Figure illustrates the relationship between cellulose CrI and poplar digestibility in this study.…”

Section: Discussionmentioning

confidence: 48%

An In‐Depth Understanding of Biomass Recalcitrance Using Natural Poplar Variants as the Feedstock

et al. 2016

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In an effort to better understand the biomass recalcitrance, six natural poplar variants were selected as feedstocks based on previous sugar release analysis. Compositional analysis and physicochemical characterizations of these poplars were performed and the correlations between these physicochemical properties and enzymatic hydrolysis yield were investigated. Gel permeation chromatography (GPC) and C solid state NMR were used to determine the degree of polymerization (DP) and crystallinity index (CrI) of cellulose, and the results along with the sugar release study indicated that cellulose DP likely played a more important role in enzymatic hydrolysis. Simons' stain revealed that the accessible surface area of substrate significantly varied among these variants from 17.3 to 33.2 mg g-1biomass as reflected by dye adsorption, and cellulose accessibility was shown as one of the major factors governing substrates digestibility. HSQC and P NMR analysis detailed the structural features of poplar lignin variants. Overall, cellulose relevant factors appeared to have a stronger correlation with glucose release, if any, than lignin structural features. Lignin structural features, such as a phenolic hydroxyl group and the ratio of syringyl and guaiacyl (S/G), were found to have a more convincing impact on xylose release. Low lignin content, low cellulose DP, and high cellulose accessibility generally favor enzymatic hydrolysis; however, recalcitrance cannot be simply judged on any single substrate factor.

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Section: Discussionmentioning

confidence: 48%

An In‐Depth Understanding of Biomass Recalcitrance Using Natural Poplar Variants as the Feedstock

et al. 2016

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“…Arabinose linked to the xylan backbone with α‐(1‐2) or α‐(1‐3) linkages forms the major branch and is present in high amounts. Different quantities of hemicelluloses are extracted from sugarcane bagasse fractions, as the amount and type of hemicelluloses vary widely with the tissue and plant type (Brienzo et al , ). Both classic and precision breeding of sugarcane varieties have reported xylose contents in the bagasse between 8.8% and 20.4% (Benjamin et al , ).…”

Section: Introductionmentioning

confidence: 99%

Soluble dietary fibres from sugarcane bagasse

Dimopoulou

Kontogiorgos

2019

Int J of Food Sci Tech

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Soluble dietary fibres from sugarcane bagasse were extracted under alkaline conditions and characterised. Precipitated fibres were dialysed, and the fibre composition was evaluated before and after the dialysis step. Compositional analysis indicated that the fibres both before and after dialysis consisted of 39% w/w total sugars, 16% w/w protein, 10% w/w Klason lignin and 30% w/w ash. Xylose was the main neutral sugar followed by arabinose with glucose, galactose and uronic acids also present in all samples. The structural properties were also spectroscopically examined, which confirmed the presence of arabinoxylans. Macromolecular characterisation revealed that molecular weight is reduced after dialysis, indicating that a range of dietary fibres with different macromolecular characteristics may be obtained depending on the specific processing steps. The present work shows that soluble arabinoxylans may be obtained from sugarcane agricultural wastes that may be used as a source of novel dietary fibres.

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“…The chemical composition of these fractions revealed similarities between the lignin content of the node and internode (22%), while the epidermis presented 29% of lignin in its composition. The lower lignin content of the internode was probably responsible for the higher glucose yield from hydrolysis . In fact, there is a difference in vascular bundles between node and internode, which in turn has an impact on more lignified structures.…”

Section: Lignin Effects On Enzymatic Hydrolysismentioning

confidence: 99%

“…The lower lignin content of the internode was probably responsible for the higher glucose yield from hydrolysis. 25 In fact, there is a difference in vascular bundles between node and internode, which in turn has an impact on more lignified structures. The heterogeneity of lignin content can therefore influence the bagasse quality generated in the sugar /ethanol industry.…”

Section: Lignin Effects On Enzymatic Hydrolysismentioning

confidence: 99%

Sugarcane biomass conversion influenced by lignin

Schmatz

Tyhoda

Brienzo

2019

Biofuels Bioprod Bioref

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Plant biomass residues are renewable sources for the production of biofuels and high‐value macromolecules. Sugarcane bagasse is one such plant biomass residue that is available from the sugar‐processing industry. It is used as a raw material for biobased ethanol production. However, some of its properties and its behavior during processing have a major inhibitory effect on its successful conversion. Chief among these inhibitory properties are the lignin content, its distribution in plant tissues, and its chemical properties. These make the materials naturally resistant to bioconversion processes. Further, lignin and carbohydrate degradation products can be formed during acid pretreatment, which is one of the major steps during biomass conversion to bioethanol. These products negatively affect the liberation of fermentable sugars and the yield of ethanol during the fermentation stage of the conversion process. Other factors that also have an influence on the production of fermentable sugar are related to the different structural arrangement of plant tissues (cane fractions of the node, internode, and external fraction), as well as biomass variety. Biomass varieties with low lignin content result in an improved yield of fermentable sugars, which in turn contributes to improved viability of the second‐generation bioethanol production processes. By selecting sugarcane varieties with the best properties, ethanol production can be increased without increasing the total area under cultivation. Efforts have been dedicated to reducing biomass recalcitrance by classical and precision breeding. Genetic modification of sugarcane alters the genes responsible for the encoding enzymes for lignin biosynthesis, generating sugarcane with low recalcitrance. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

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Comparison Study on the Biomass Recalcitrance of Different Tissue Fractions of Sugarcane Culm

Cited by 45 publications

References 38 publications

An In‐Depth Understanding of Biomass Recalcitrance Using Natural Poplar Variants as the Feedstock

An In‐Depth Understanding of Biomass Recalcitrance Using Natural Poplar Variants as the Feedstock

Soluble dietary fibres from sugarcane bagasse

Sugarcane biomass conversion influenced by lignin

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