Acid-catalyzed steam explosion for high enzymatic saccharification and low inhibitor release from lignocellulosic cardoon stalks

Cavalaglio, Gianluca; Gelosia, Mattia; Giannoni, Tommaso; Temporim, Ramoon Barros Lovate; Nicolini, Andrea; Cotana, Franco; Bertini, Alessandro

doi:10.1016/j.bej.2021.108121

Cited by 19 publications

(19 citation statements)

References 60 publications

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“…The presence of acid promotes the cleavage of the glycosidic bond, lowering the crystalline degree of cellulose fibers and making them more digestible. The shorter cellulose chains have more reducing ends and are more easily attacked by enzymes [57]. Because of the factors mentioned above, run #1 and run #19 achieved an HY of 91.77% and 100%, respectively, demonstrating that CP with high cellulose content is also extremely digestible.…”

Section: Enzymatic Hydrolysis Of Cpmentioning

confidence: 99%

Fractionation of Cynara cardunculus L. by Acidified Organosolv Treatment for the Extraction of Highly Digestible Cellulose and Technical Lignin

et al. 2021

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One of the primary targets for the new lignocellulosic feedstock-based biorefinery is the simultaneous valorization of holocellulose and lignin. Acidified organosolv treatment is among the most promising strategy for recovering technical lignin, water-soluble hemicellulose, and cellulose pulp with increased accessibility to hydrolytic enzymes. In this work, a design-of-experiment (DoE) approach was used to increase the cellulose recovery, digestibility, and the delignification of Cynara cardunculus L. feedstock. In the first treatment, the milled biomass was subjected to microwave-assisted extraction using an acidified GVL/water mixture to separate lignin and hemicellulose from cellulose. In the second treatment, the cellulose pulp was hydrolyzed by cellulolytic enzymes to demonstrate the enhanced digestibility. At the optimal condition (154 °C, 2.24% H2SO4, and 0.62 GVL/water ratio), the cellulose pulp showed a cellulose content of 87.59%, while the lignin content was lower than 8%. The cellulose recovery and digestibility were equal to 79.46% and 86.94%, respectively. About 40% of the initial hemicellulose was recovered as monosaccharides. This study demonstrated the effectiveness of the two-step organosolv treatment for biomass fractionation; however, as suggested by DoE analysis, a confirmative study at a low temperature (<154 °C) should be performed to further increase the cellulose recovery.

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Section: Enzymatic Hydrolysis Of Cpmentioning

confidence: 99%

Fractionation of Cynara cardunculus L. by Acidified Organosolv Treatment for the Extraction of Highly Digestible Cellulose and Technical Lignin

et al. 2021

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“…24 Around 45% of the articles reviewed have been recently published, between 2020 and 2021. 25–45 It seems that in the following years more LCAs will be performed to understand and optimize the chemical processes.…”

Section: Resultsmentioning

confidence: 99%

Life cycle assessment as a tool for evaluating chemical processes at industrial scale: a review

Arfelis¹,

Bala²,

Fullana–i–Palmer³

2022

Green Chem.

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“…The chemical composition has been studied by various researchers in different biomass fractions: root [32,39]; stalks [42]; capitula fractions (receptacle, bracts, hairs, and pappi) [43]; heads [7]; leaves [35,44]; flowers [45]; seeds [7,46,47], as summarized in Tables 1-9.…”

Section: Nutritional and Chemical Compositionmentioning

confidence: 99%

Bioactive Compounds from Cardoon as Health Promoters in Metabolic Disorders

Silva

Jacinto

Coutinho

2022

Foods

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Cardoon (Cynara cardunculus L.) is a Mediterranean plant and member of the Asteraceae family that includes three botanical taxa, the wild perennial cardoon (C. cardunculus L. var. sylvestris (Lamk) Fiori), globe artichoke (C. cardunculus L. var. scolymus L. Fiori), and domesticated cardoon (C. cardunculus L. var. altilis DC.). Cardoon has been widely used in the Mediterranean diet and folk medicine since ancient times. Today, cardoon is recognized as a plant with great industrial potential and is considered as a functional food, with important nutritional value, being an interesting source of bioactive compounds, such as phenolics, minerals, inulin, fiber, and sesquiterpene lactones. These bioactive compounds have been vastly described in the literature, exhibiting a wide range of beneficial effects, such as antimicrobial, anti-inflammatory, anticancer, antioxidant, lipid-lowering, cytotoxic, antidiabetic, antihemorrhoidal, cardiotonic, and choleretic activity. In this review, an overview of the cardoon nutritional and phytochemical composition, as well as its biological potential, is provided, highlighting the main therapeutic effects of the different parts of the cardoon plant on metabolic disorders, specifically associated with hepatoprotective, hypolipidemic, and antidiabetic activity.

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Acid-catalyzed steam explosion for high enzymatic saccharification and low inhibitor release from lignocellulosic cardoon stalks

Cited by 19 publications

References 60 publications

Fractionation of Cynara cardunculus L. by Acidified Organosolv Treatment for the Extraction of Highly Digestible Cellulose and Technical Lignin

Fractionation of Cynara cardunculus L. by Acidified Organosolv Treatment for the Extraction of Highly Digestible Cellulose and Technical Lignin

Life cycle assessment as a tool for evaluating chemical processes at industrial scale: a review

Bioactive Compounds from Cardoon as Health Promoters in Metabolic Disorders

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