Enzymatic Valorization of Lignocellulosic Biomass—The Influence of Deep Eutectic Solvents and Ionic Liquids on the Activity of Cellulolytic Enzymes

Agata Wawoczny, Marta Przypis and Danuta Gillner ()
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Agata Wawoczny: Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
Marta Przypis: Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland
Danuta Gillner: Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, 44-100 Gliwice, Poland

Sustainability, 2023, vol. 15, issue 24, 1-18

Abstract: In recent years, there has been a steady increase in the interest in changing lignocellulose processing technologies from harmful and nonecological to more ecological and sustainable. Deep eutectic solvents (DESs) and ionic liquids (ILs) are green, efficient solvents/catalysts for biomass pretreatment as well as its further transformation. In many cases, they are used together with biocatalysts. Additionally, in processes where DESs and ILs are used for the pretreatment of biomass, before enzymatic transformation, traces of these solvents can influence the activity of biocatalysts. For this reason, it is important to evaluate the effect of novel, green solvents on the activity of enzymes widely applied in the biomass valorization processes. In this work, we present the impact of chosen DESs and ILs, most often applied in biomass pretreatment and transformation, on the enzymatic activity of popular cellulolytic enzymes and enzymatic preparations (namely, cellulases from Aspergillus niger , Trichoderma reesei , and Viscozyme L). The enzymatic activity was investigated in the process of transformation of cellulose or biomass to glucose. The results showed that many of the solvents tested had a negative effect on enzymatic activity, suggesting a separation of pretreatment and enzymatic processes.

Keywords: deep eutectic solvent; ionic liquid; cellulase; biomass processing; biomass enzymatic hydrolysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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