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Acid-Assisted Organosolv Pre-Treatment and Enzymatic Hydrolysis of Cynara cardunculus L. for Glucose Production

Author

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  • Mattia Gelosia

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

  • Alessandro Bertini

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

  • Marco Barbanera

    (University of Tuscia, Largo dell’Università, s.n.c., Loc. Riello, 01100 Viterbo, Italy)

  • Tommaso Giannoni

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

  • Andrea Nicolini

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

  • Franco Cotana

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

  • Gianluca Cavalaglio

    (CIRIAF (Inter-University Research Center on Pollution and Environment “Mauro Felli”), Biomass Research Centre, University of Perugia, via G. Duranti 63, 06125 Perugia, Italy)

Abstract

Lignocellulosic biomass is a non-edible feedstock that can be used in integrated biorefinery for the production of biochemicals and biofuel. Among lignocellulosic biomass, Cynara cardunculus L. (cardoon) is a promising crop thanks to its low water and fertilizer demand. Organosolv is a chemical treatment that uses numerous organic or aqueous solvent mixtures, and a small amount of acid catalyst, in order to solubilize the lignin and hemicellulose fractions, making the cellulose accessible to hydrolytic enzymes. Lignocellulosic residues of cardoon underwent a two-step treatment process to obtain fermentable glucose. In the first step, the milled biomass was subjected to microwave-assisted extraction using an acidified γ-valerolactone (GVL)/water mixture, yielding a solid cellulose pulp. In the second step, the pre-treated material was hydrolyzed by cellulolytic enzymes to glucose. The first step was optimized by means of a two-level full factorial design. The investigated factors were process temperature, acid catalyst concentration, and GVL/water ratio. A glucose production equal to 30.17 g per 100 g of raw material (89% of the maximum theoretical yield) was achieved after conducting the first step at 150 °C using an acidified water solution (1.96% H 2 SO 4 w / w ).

Suggested Citation

  • Mattia Gelosia & Alessandro Bertini & Marco Barbanera & Tommaso Giannoni & Andrea Nicolini & Franco Cotana & Gianluca Cavalaglio, 2020. "Acid-Assisted Organosolv Pre-Treatment and Enzymatic Hydrolysis of Cynara cardunculus L. for Glucose Production," Energies, MDPI, vol. 13(16), pages 1-10, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:16:p:4195-:d:398745
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    References listed on IDEAS

    as
    1. Zhang, Hairong & Yang, Huijuan & Guo, Haijun & Huang, Chao & Xiong, Lian & Chen, Xinde, 2014. "Kinetic study on the liquefaction of wood and its three cell wall component in polyhydric alcohols," Applied Energy, Elsevier, vol. 113(C), pages 1596-1600.
    2. Alessandro Bertini & Mattia Gelosia & Gianluca Cavalaglio & Marco Barbanera & Tommaso Giannoni & Giorgia Tasselli & Andrea Nicolini & Franco Cotana, 2019. "Production of Carbohydrates from Cardoon Pre-Treated by Acid-Catalyzed Steam Explosion and Enzymatic Hydrolysis," Energies, MDPI, vol. 12(22), pages 1-10, November.
    3. Mattia Gelosia & David Ingles & Enrico Pompili & Silvia D’Antonio & Gianluca Cavalaglio & Alessandro Petrozzi & Valentina Coccia, 2017. "Fractionation of Lignocellulosic Residues Coupling Steam Explosion and Organosolv Treatments Using Green Solvent γ-Valerolactone," Energies, MDPI, vol. 10(9), pages 1-11, August.
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    Cited by:

    1. Tommaso Giannoni & Mattia Gelosia & Alessandro Bertini & Giacomo Fabbrizi & Andrea Nicolini & Valentina Coccia & Paola Iodice & Gianluca Cavalaglio, 2021. "Fractionation of Cynara cardunculus L. by Acidified Organosolv Treatment for the Extraction of Highly Digestible Cellulose and Technical Lignin," Sustainability, MDPI, vol. 13(16), pages 1-16, August.
    2. Giacomo Fabbrizi & Tommaso Giannoni & Leonardo Lorenzi & Andrea Nicolini & Paola Iodice & Valentina Coccia & Gianluca Cavalaglio & Mattia Gelosia, 2022. "High Solid and Low Cellulase Enzymatic Hydrolysis of Cardoon Stems Pretreated by Acidified γ-Valerolactone/Water Solution," Energies, MDPI, vol. 15(7), pages 1-12, April.

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