2017
DOI: 10.4067/s0717-97072017000200005
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Chemical and Microstructural Changes in Eucalyptus Globulus Fibers Subjected to Four Different Pretreatments and Their Influence on the Enzymatic Hydrolysis

Abstract: In order to understand the relation between chemical composition, microscopic structure and enzymatic digestibility, different Eucalyptus globulus wood pretreated samples were examined. Pretreated materials obtained by steam explosion and autohydrolysis were compared with those obtained by organosolv and kraft processes. Chemical analyses of pretreated materials showed a decrease in the content of xylans, except in the kraft pulp. FT-IR spectra showed that the residual lignin in autohydrolysis pulp had experie… Show more

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Cited by 9 publications
(9 citation statements)
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“…In the assay with S. cerevisiae ( Figure 1A), after a very short lag phase, glucose started to be consumed for biomass growth and also for ethanol production. The maximum ethanol concentration of Energies 2020, 13, 744 6 of 15 19.81 ± 0.15 g·L −1 was reached at 8.9 h simultaneously with glucose exhaustion. Biomass concentration increased while glucose was being consumed and remained constant until 24.0 h, when ethanol started to be assimilated, resulting in a little increase in biomass concentration.…”
Section: Erlenmeyer Flask Mono-culture Assaysmentioning
confidence: 94%
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“…In the assay with S. cerevisiae ( Figure 1A), after a very short lag phase, glucose started to be consumed for biomass growth and also for ethanol production. The maximum ethanol concentration of Energies 2020, 13, 744 6 of 15 19.81 ± 0.15 g·L −1 was reached at 8.9 h simultaneously with glucose exhaustion. Biomass concentration increased while glucose was being consumed and remained constant until 24.0 h, when ethanol started to be assimilated, resulting in a little increase in biomass concentration.…”
Section: Erlenmeyer Flask Mono-culture Assaysmentioning
confidence: 94%
“…Kraft pulping also leads to hemicelluloses and some cellulose loss and decreases the degree of polymerization of cellulose [14]. The utilization of Kraft pulping as a pretreatment method for LCB has many advantages such as low sugar degradation, pulps free of inhibitors such as furfural and hydroxymethylfurfural (HMF), the recovery of chemicals used, and finally energy production in the recovery boiler [15,16].The enzymatic hydrolysis of Kraft pulp of sweet sorghum bagasse [17], pine, poplar, birch, beech, and wheat straw [16,18], hemp [18], eucalyptus [19], moso bamboo [20], spruce, and birch-aspen mixture [21] has been studied. Hydrolysates with sugar profiles adequate for fermentation have been obtained, proving the viability of Kraft pulping as a LCB pretreatment.…”
mentioning
confidence: 99%
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“…The pretreatment conditions used in this work were determined in a previous optimization work developed in the Bioenercel Consortium framework (TRONCOSO et al, 2017).…”
Section: Pretreatment Enzymatic Hydrolysis and Ssf From E Globulus mentioning
confidence: 99%
“…The reactor was heated at 3ºC . min -1 , and the cooking was conducted at 194ºC and residence time of 1 min, according to previous work (TRONCOSO et al, 2017).…”
Section: Pretreatmentsmentioning
confidence: 99%