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Strategies towards Reduction of Cellulases Consumption: Debottlenecking the Economics of Lignocellulosics Valorization Processes

CEB—Centre of Biological Engineering, Campus de Gualtar, Universidade do Minho, 4710-057 Braga, Portugal
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Academic Editor: Cédric Delattre
Polysaccharides 2021, 2(2), 287-310; https://doi.org/10.3390/polysaccharides2020020
Received: 25 March 2021 / Revised: 12 April 2021 / Accepted: 21 April 2021 / Published: 2 May 2021
(This article belongs to the Collection Current Opinion in Polysaccharides)
Lignocellulosic residues have been receiving growing interest as a promising source of polysaccharides, which can be converted into a variety of compounds, ranging from biofuels to bioplastics. Most of these can replace equivalent products traditionally originated from petroleum, hence representing an important environmental advantage. Lignocellulosic materials are theoretically unlimited, cheaper and may not compete with food crops. However, the conversion of these materials to simpler sugars usually requires cellulolytic enzymes. Being still associated with a high cost of production, cellulases are commonly considered as one of the main obstacles in the economic valorization of lignocellulosics. This work provides a brief overview of some of the most studied strategies that can allow an important reduction of cellulases consumption, hence improving the economy of lignocellulosics conversion. Cellulases recycling is initially discussed regarding the main processes to recover active enzymes and the most important factors that may affect enzyme recyclability. Similarly, the potential of enzyme immobilization is analyzed with a special focus on the contributions that some elements of the process can offer for prolonged times of operation and improved enzyme stability and robustness. Finally, the emergent concept of consolidated bioprocessing (CBP) is also described in the particular context of a potential reduction of cellulases consumption. View Full-Text
Keywords: lignocellulosic materials; complex sugars; enzymatic hydrolysis; cellulases recycling; enzyme immobilization; consolidated bioprocessing; biorefineries lignocellulosic materials; complex sugars; enzymatic hydrolysis; cellulases recycling; enzyme immobilization; consolidated bioprocessing; biorefineries
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MDPI and ACS Style

Gomes, D.; Cunha, J.; Zanuso, E.; Teixeira, J.; Domingues, L. Strategies towards Reduction of Cellulases Consumption: Debottlenecking the Economics of Lignocellulosics Valorization Processes. Polysaccharides 2021, 2, 287-310. https://doi.org/10.3390/polysaccharides2020020

AMA Style

Gomes D, Cunha J, Zanuso E, Teixeira J, Domingues L. Strategies towards Reduction of Cellulases Consumption: Debottlenecking the Economics of Lignocellulosics Valorization Processes. Polysaccharides. 2021; 2(2):287-310. https://doi.org/10.3390/polysaccharides2020020

Chicago/Turabian Style

Gomes, Daniel, Joana Cunha, Elisa Zanuso, José Teixeira, and Lucília Domingues. 2021. "Strategies towards Reduction of Cellulases Consumption: Debottlenecking the Economics of Lignocellulosics Valorization Processes" Polysaccharides 2, no. 2: 287-310. https://doi.org/10.3390/polysaccharides2020020

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