Chemical and anatomical characterization, and antioxidant properties of barks from 11 Eucalyptus species

Lima, Leandro Cardoso de; Miranda, Isabel; Knapic, Sofia; Quilhó, Teresa; Pereira, Helena

doi:10.1007/s00107-017-1247-y

Cited by 24 publications

(17 citation statements)

References 40 publications

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“…This composition can be compared with previous characterizations of barks from several species of Eucalyptus, such as E. globulus and E. nitens [16,22,41]. On the other hand, Lima and co-authors [17]…”

Section: Eucalyptus Bark Chemical Characterizationmentioning

confidence: 89%

“…Opposing to eucalyptus wood, literature data on the fractionation of eucalyptus bark is rather scarce, with most of the existing results focusing on its characterization and/or in the extraction of bioactive compounds and the effect of pretreatment on its enzymatic saccharification [16,17,21,38,39]. As for eucalyptus wood, eucalyptus bark also presents an interesting potential, mostly due to a considerable amount of polysaccharides (67.17%) and, to a lower extent, lignin (21.86% Klason lignin) and a minimal content of ash (2.63%), as shown in Table 1.…”

Section: Eucalyptus Bark Chemical Characterizationmentioning

confidence: 99%

“…In the particular context of the Portuguese economy, the pulp and paper industry, which is one of the largest in this sector, is mostly based on Eucalyptus globulus wood [16]. On this industry, large amounts of eucalyptus bark are annually generated as a residue from manufacturing processes [17]. According to Santos et al [18], for each tonne of bleached Kraft pulp produced, a pulp mill can generate approximately 0.2 tons of bark residue.…”

Section: Introductionmentioning

confidence: 99%

“…This residue can, however, still present interesting levels of polysaccharides -61%, but also extractives (9.86%) and lignin (21.86%) [19]. Recent studies on these residues already showed their potential in the production/recovery of polyphenols [17,20], lignin [21], glucose [16], as well as solid fuels [19].…”

Section: Introductionmentioning

confidence: 99%

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Co-production of biofuels and value-added compounds from industrial Eucalyptus globulus bark residues using hydrothermal treatment

Gomes

Michelin

Romaní

et al. 2021

Fuel

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In this work, hydrothermal treatment was assessed for the fractionation of industrial Eucalyptus globulus bark residue (EBR) to obtain biofuels and value-added compounds (such as oligosaccharides and phenolic compounds) in separated streams. Hydrothermal treatment was evaluated under non-isothermal regimen in the range of maximum temperature (T max) of 177-228 • C or severities (S 0) between 2.76 and 4.25. The highest oligosaccharides concentration (17.5 g/L) was achieved at S 0 of 3.69, corresponding to hemicellulose recovery of 77.30%. Under all severities evaluated in this work, over 90.94% and 84.17% of cellulose and lignin remained in the solid phase, respectively. The increase of S 0 improved 4.38-fold the enzymatic saccharification of cellulose, the highest glucose yield (84%) being achieved at S 0 of 4.04. Considering the maximal recovery of polysaccharides as glucose and oligosaccharides from the liquid and solid phases, S 0 of 4.04 was selected for bioethanol production using high solid loadings and following different strategies (simultaneous saccharification and fermentation-SSF and pre-saccharification and simultaneous saccharification and fermentation-PSSF). The utilization of 15% hydrothermally pretreated EBR without nutrient supplementation resulted in 26 g/L of ethanol, independently of the strategy used. An increase up to 17.5% solids and employing nutrient supplementation enabled the production of 38 g/L (or 4.8% v/v) of ethanol by PSSF.

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Section: Eucalyptus Bark Chemical Characterizationmentioning

confidence: 89%

Section: Eucalyptus Bark Chemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Co-production of biofuels and value-added compounds from industrial Eucalyptus globulus bark residues using hydrothermal treatment

Gomes

Michelin

Romaní

et al. 2021

Fuel

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“…In order to high value utilization, it can be used as an alternative raw material for wood plastic composite (WPC). 61,62 The difference between the relative amounts of compounds in the pyrolysis was analyzed systematically. The content of formic acid in the bark and wood is 0.37% and 0.8%, respectively; the content of acetaldehyde, hydroxy-in the bark and wood is 1.38% and 5.77%, respectively; the content of acetic acid in the bark and wood is 7.73% and 7.02%, respectively.…”

Section: Comparative Analysis Of Bark and Wood Of T Sinensismentioning

confidence: 99%

Chemical components analysis of Toona sinensis bark and wood by pyrolisis–gas chromatography–mass spectrometry

Yang

et al. 2020

Asia-Pacific J Chem Eng

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The production of energy from wood biomass is as old as humanity itself. There has been enormous progress in research of sustainable pyrolysis processes for optimal energy conversion in the past 30 years. Pyrolisis–gas chromatography–mass spectrometry (PY‐GC‐MS) was used to examine the components of bark and wood of Toona sinensis for expanding high value utilization different parts of trees. In the study, 174 chemical constituents were identified in the bark; 169 chemical constituents were identified in the wood, respectively. The chemical composition of bark is different from that of wood. The change in thermal cracking 30 min ago is not very large. In the retention time is more than 30 min, they are very different. Because the ash content of bark had much large corresponding wood. Mainly the phenols and their derivatives formed after the pyrolysis of lignin and extractives. The chemical composition of T. sinensis provides a scientific basis for the development and utilization of the plant. The richer chemical constituents of T. sinensis are found, which will provide new scientific evidence for further development and utilization of bark and wood of T. sinensis.

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Supercritical fluid extraction for enhancing polyphenolic compounds production from olive waste extracts

Caballero-Galván

Romero‐García

Castro

2019

J of Chemical Tech & Biotech

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BACKGROUNDA number of residues are produced during the olive oil extraction process, such as crushed pits, olive leaves, pomace and exhaust olive pomace. In addition, pruning of olive trees results in a huge amount of biomass. All of these lignocellulosic materials constitute a source of energy and chemicals that can be used as raw materials in biorefineries. Among them, antioxidants are of particular interest due to their potential applications in pharmaceutical and food industry.RESULTSSupercritical fluid extraction (SFE) was applied on three different olive residues – pruning biomass, leaves and exhaust pomace. In this, 60% ethanol was used as cosolvent at three different pressure levels, 200, 250 and 300 bar. The best conditions for each residue were determined and compared with conventional extraction. Results show that 300 bar was the best pressure for SFE in terms of antioxidant activity of the extracts. The main polyphenolic compounds also were identified, among which hydroxytyrosol, chlorogenic acid, caffeic acid and ferulic acid were present.CONCLUSIONSFE at 300 bar proved to be the best option for obtaining a high‐activity antioxidant extract from olive leaves, exhaust pomace and pruning biomass, with hydroxytyrosol the prominent compound detected. This procedure could be integrated in a biorefinery based on olive‐derived biomass. © 2018 Society of Chemical Industry

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Chemical and anatomical characterization, and antioxidant properties of barks from 11 Eucalyptus species

Cited by 24 publications

References 40 publications

Co-production of biofuels and value-added compounds from industrial Eucalyptus globulus bark residues using hydrothermal treatment

Co-production of biofuels and value-added compounds from industrial Eucalyptus globulus bark residues using hydrothermal treatment

Chemical components analysis of Toona sinensis bark and wood by pyrolisis–gas chromatography–mass spectrometry

Supercritical fluid extraction for enhancing polyphenolic compounds production from olive waste extracts

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