Combination of steam explosion and laccase-mediator treatments prior to Eucalyptus globulus kraft pulping

Martín‐Sampedro, Raquel; Eugenio, María E.; Carbajo, José María; Villar, Juan C.

doi:10.1016/j.biortech.2011.04.053

Cited by 24 publications

(20 citation statements)

References 15 publications

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“…This may occur because pectinase pretreatment promoted the penetration of reagents into the bagasse, facilitating the soda-AQ pulping process. This result is in concordance with that reported by Martin-Sampedro et al (2011). After pectinase pretreatment, the optimal cooking conditions were as follows: 1% smaller alkali dosage and 20 min less holding time, compared with the control.…”

Section: Effects Of Pectinase Pretreatment On Holding Time During Sodsupporting

confidence: 92%

“…Many investigations of bagasse pulping have been reported worldwide (Khristova et al 2006;Huang et al 2008), including biopulping (Martin-Sampedro et al 2011). Biopulping is the biological pretreatment of the lignocellulosic substrate to modify sample composition such as lignin content, with the aim of facilitating fiber separation or lignin removal in a subsequent mechanical or chemical pulping process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Liu¹,

Jiang²,

Xie³

et al. 2017

BioResources

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Pectinase pretreatment prior to bagasse soda-anthraquinone (AQ) pulping was conducted, and the effects of pectinase pretreatment on the pulp strength properties, energy consumption, and pulpability were evaluated in this study. Considering the pulp properties, the optimal conditions for the pectinase pretreatment were a pectinase dosage of 60 U/g (with respect to oven-dry bagasse) and 60-min treatment time. Compared with the control pulps obtained under the same treatment conditions with enzyme pretreatment (just without enzyme addition), the pretreated pulps attained a reduction in kappa number of 17.8% and an increase in total pulp yield of 15.8%. Moreover, higher breaking length, burst factor, and tear factor after soda-AQ pulping were found in the pectinase-pretreated samples, which suggests some improvements in pulp strength properties. With pectinase treatment, a 1% reduction in alkali charge and 20% decrease in pulping time were observed in subsequent pulping stages without affecting the pulp properties. Pectinase treatment prior to pulping seems to be a promising, economically feasible, and eco-friendly concept.

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Section: Effects Of Pectinase Pretreatment On Holding Time During Sodsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Liu¹,

Jiang²,

Xie³

et al. 2017

BioResources

View full text Add to dashboard Cite

show abstract

“…Fungal delignification utilizes the complete ligninolytic microorganisms for biomass delignification. In those cases, the microorganisms grow with the target biomass in a submerged culture [8,60] or a solid state fermentation [3,7]. Both cultivations achieved good delignification percentages; however, these were not always related with high glucose yields.…”

Section: Delignificationmentioning

confidence: 99%

Ligninolytic enzymes: a biotechnological alternative for bioethanol production

Plácido

Capareda

2015

Bioresour. Bioprocess.

178

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Ligninolytic fungi and enzymes (i.e., laccase, manganese peroxidase, and lignin peroxidase) have been applied recently in the production of second-generation biofuels. This review contains the analysis of ligninolytic enzymes and their applications in second-generation biofuels. In here, each of the ligninolytic enzymes was described analyzing their structures, catalysis, and reaction mechanism. Additionally, delignification and detoxification, the two most important applications of ligninolytic enzymes, were reviewed and analyzed. The analysis includes an evaluation of the biochemical process, feedstocks, and the ethanol production. This review describes the current situation of the ligninolytic enzymes technology and its future applications in bioethanol industry.

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“…For instance, in the production of bioethanol, the laccase-mediator system (LMS) treatment has been used to remove inhibiting compounds. 14, 15 In paper production, LMS treatments between steam explosion and kraft pulping increase the delignification rate, 16 even when applied on substrates with high lignin content.…”

Section: ' Introductionmentioning

confidence: 99%

Lignin Changes after Steam Explosion and Laccase-Mediator Treatment of Eucalyptus Wood Chips

Martín‐Sampedro

Capanema

Hoeger

et al. 2011

J. Agric. Food Chem.

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Eucalyptus globulus chips were steam exploded followed by treatment with a laccase-mediator system (LMS) under different experimental conditions. Removal of hemicelluloses and, to a lesser extent, lignin was observed. Thermogravimetic analyses of whole meal obtained from chips before and after steam explosion indicated an increase in lignin degradation temperature due to lignin condensation. In contrast, application of LMS treatment caused a reduction in lignin and polysaccharide degradation temperatures. Lignins were isolated from wood samples before and after each treatment and analyzed by 2D NMR and (13)C NMR. An increase in carboxyl and phenolic hydroxyl groups and a significant decrease in β-O-4 structures were found in steam-exploded samples. The most relevant changes observed after laccase treatment were increased secondary OH and degree of condensation.

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Combination of steam explosion and laccase-mediator treatments prior to Eucalyptus globulus kraft pulping

Cited by 24 publications

References 15 publications

Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Effect of Alkali Pectinase Pretreatment on Bagasse Soda-Anthraquinone Pulp

Ligninolytic enzymes: a biotechnological alternative for bioethanol production

Lignin Changes after Steam Explosion and Laccase-Mediator Treatment of Eucalyptus Wood Chips

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