Green solvents extraction-based detoxification to enhance the enzymatic hydrolysis of steam-exploded lignocellulosic biomass and recover bioactive compounds.

Autor: Cañadas R; Institute of Forest Sciences (ICIFOR-INIA), CSIC, Ctra. de La Coruña Km 7.5, 28040, Madrid, Spain. Electronic address: rc.soler@inia.csic.es., Martín-Sampedro R; Institute of Forest Sciences (ICIFOR-INIA), CSIC, Ctra. de La Coruña Km 7.5, 28040, Madrid, Spain., González-Miquel M; Dept. of Industrial Chemical and Environmental Engineering, (ETSII, UPM), C/ José Gutiérrez Abascal 2, 28006, Madrid, Spain., González EJ; Dept. of Industrial Chemical and Environmental Engineering, (ETSII, UPM), C/ José Gutiérrez Abascal 2, 28006, Madrid, Spain., Ballesteros I; Advanced Biofuels and Bioproducts Unit, Department of Energy, CIEMAT, 28040 Madrid, Spain., Eugenio ME; Institute of Forest Sciences (ICIFOR-INIA), CSIC, Ctra. de La Coruña Km 7.5, 28040, Madrid, Spain., Ibarra D; Institute of Forest Sciences (ICIFOR-INIA), CSIC, Ctra. de La Coruña Km 7.5, 28040, Madrid, Spain.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2023 Oct 15; Vol. 344, pp. 118448. Date of Electronic Publication: 2023 Jul 04.
DOI: 10.1016/j.jenvman.2023.118448
Abstrakt: A novel strategy for pre-treated biomass detoxification combining emerging green solvents and low environmental impact extraction technologies was evaluated. Steam-exploded biomass was subjected to microwave-assisted or orbital shaking extraction using bio-based or eutectic solvents. The extracted biomass was enzymatically hydrolysed. The potential of this detoxification methodology was studied in terms of phenolic inhibitors extraction and sugar production improvement. The effect of adding a post-extraction water washing step before hydrolysis was also evaluated. Excellent results were achieved when steam-exploded biomass was subjected to the microwave-assisted extraction combined with the washing step. The highest sugar production was achieved when ethyl lactate was used as extraction agent (49.80 ± 3.10 g total sugar/L) over the control (30.43 ± 0.34 g total sugar/L). Results suggested that a detoxification step based on green solvents would be a promising option to extract phenolic inhibitors, which can be revalorized as antioxidants, and improve the sugar production from the extracted pre-treated biomass.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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