Minor Biomass Particle Size for an Efficient Cellulose Accessibility and Enzymatic Hydrolysis

Fernandes, Érika S.; Bueno, Danilo; Pagnocca, Fernando Carlos; Brienzo, Michel

doi:10.1002/slct.202001008

Cited by 29 publications

(4 citation statements)

References 29 publications

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“…Fernandes et al. found an increase in glucose yield during enzymatic hydrolysis of sugarcane bagasse of 76 % with particles smaller than 60 mesh compared to native particle size 25. However, the achieved glucose yield of milled biomass particles is still unsatisfactory.…”

Section: Resultsmentioning

confidence: 99%

“…The authors demonstrated a preferential hydrolysis of smaller particles by cellulases as well as a higher saccharification rate of substrates with a smaller particle size [24]. Fernandes et al found an increase in glucose yield during enzymatic hydrolysis of sugarcane bagasse of 76 % with particles smaller than 60 mesh compared to native particle size [25]. However, the achieved glucose yield of milled biomass particles is still unsatisfactory.…”

Section: Biocatalysis Of Biomasses With Different Lignin Contentsmentioning

confidence: 99%

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Effects of Pretreatment on the Biocatalysis of Renewable Resources

Varriale

Volkmar

Weiermüller

et al. 2022

Chemie Ingenieur Technik

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Within a biorefinery platform several conversion steps such as pretreatment, saccharification, fermentation and downstream processing are necessary to obtain the final bio-based product(s) from lignocellulosic biomass. The structural composition of the biomass, especially the lignin content, determines the necessary pretreatment steps. To obtain sugar monomers, the hydrolysis of lignocellulosic biomass is an essential step. This work examines the impact of different pretreatments on the sugar release during biocatalysis. Even without prior pretreatment the biocatalysis of low lignin biomass achieves glucose yields of up to 93 %, while the biocatalysis of high lignin biomass requires an upstream hydrothermal procedure to achieve a glucose yield of 74 %.

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Section: Resultsmentioning

confidence: 99%

Section: Biocatalysis Of Biomasses With Different Lignin Contentsmentioning

confidence: 99%

Effects of Pretreatment on the Biocatalysis of Renewable Resources

Varriale

Volkmar

Weiermüller

et al. 2022

Chemie Ingenieur Technik

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show abstract

“…Sugarcane bagasse was donated by the CTC (Centro de Tecnologia Canavieira -Piracicaba -SP, Brazil), was successively washed with distilled water aiming to remove reserve sugar residues, and then was oven-dried at 55 °C for 48 h. After that, biomass was ground in 20-mesh a knife mill (825 μm) [24]. The biomass was conditioned in plastic bags and stocked.…”

Section: Methodsmentioning

confidence: 99%

Lignin Removal and Cellulose Digestibility Improved by Adding Antioxidants and Surfactants to Organosolv Pretreatment of Sugarcane Bagasse

2021

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Annually, tons of sugarcane bagasse are generated in the sugar and alcohol industries. This biomass has great potential in the use of converting cellulose into glucose, an energy currency for various biotechnological processes. However, lignin content is a limiting factor in cellulose accessibility. This study aimed to improve lignin removal by evaluating the additive's effect on biomass pretreatment. The additives were tert-butylhydroquinone, 3-tert-butyl-4-hydroxyanisole, methyl 3,4,5-trihydroxybenzoate; surfactants Tween 20, Tween 80, and dimethyl sulfoxide (DMSO). The antioxidants collaborated with lignin removal; the 3-tert-butyl-4-hydroxyanisole reached 71% of lignin removal. Inherent to the pretreatment, tert-butylhydroquinone showed 23.53% and 89.54% of cellulose and hemicellulose removal, respectively. Dioxane extraction compounds from the pretreated biomass showed an increased amount using additives, suggesting more compounds adsorbed on the material surface. All the antioxidants/surfactants applied to the organosolv pretreatment improved enzymatic hydrolysis, reaching 98.9% cellulose into glucose conversion (Tween 80). The use of chemical compounds during pretreatment beneficed the removal of lignin from biomass and consequently the cellulose hydrolysis.

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“…Curaua has a small lignin content and this factor can facilitate the access of chemical reagents to hemicellulose. Sugarcane bagasse fibers, for example, have 43.36% cellulose, 23.27% hemicellulose, and 21.38% lignin [ 10 ]. Despite having a higher percentage of hemicellulose compared to curaua fibers, the comparatively high percentage of lignin makes the hemicellulose extraction process difficult.…”

Section: Introductionmentioning

confidence: 99%

Hemicellulose Films from Curaua Fibers (Ananas erectifolius): Extraction and Thermal and Mechanical Characterization

et al. 2022

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With growing environmental concerns over synthetic polymers, natural polymeric materials, such as hemicellulose, are considered a good sustainable alternative. Curaua fibers could be an excellent source of biopolymer as they have a relatively high hemicellulose content (15 wt%) and only a small amount of lignin (7 wt%). In this work, hemicellulose was extracted by an alkaline medium using KOH and the influence of the alkali concentration, temperature, and time was studied. A hemicellulose film was produced by water casting and its mechanical, thermal, and morphological properties were characterized. The results show that the best method, which resulted in the highest hemicellulose yield and lowest contamination from lignin, was using 10% (w/v) KOH concentration, 25 °C, and time of 3 h. The hemicellulose film exhibited better thermal stability and elongation at break than other polymeric films. It also exhibited lower rigidity and higher flexibility than other biodegradable polymers, including polylactic acid (PLA) and polyhydroxybutyrate (PHB).

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Minor Biomass Particle Size for an Efficient Cellulose Accessibility and Enzymatic Hydrolysis

Cited by 29 publications

References 29 publications

Effects of Pretreatment on the Biocatalysis of Renewable Resources

Effects of Pretreatment on the Biocatalysis of Renewable Resources

Lignin Removal and Cellulose Digestibility Improved by Adding Antioxidants and Surfactants to Organosolv Pretreatment of Sugarcane Bagasse

Hemicellulose Films from Curaua Fibers (Ananas erectifolius): Extraction and Thermal and Mechanical Characterization

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