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Comparative study of the enzymatic convertibility of glycerol- and dilute acid-pretreated sugarcane bagasse using Penicillium- and Trichoderma-based cellulase preparations
Umeå University, Faculty of Science and Technology, Department of Chemistry. A.N Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow 119071, Russia; Thünen Institute for Wood Research, 21031 Hamburg, Germany .
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2015 (English)In: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 77, 382-390 p.Article in journal (Refereed) PublishedText
Abstract [en]

Three enzyme preparations based on the cellulase complex of Penicillium verruculosum and three Trichoderma reesei-based enzyme cocktails were used for evaluating the enzymatic convertibility of cellulose contained in glycerol- and sulfuric acid-pretreated bagasse. The hydrolysis was initially monitored with a micro-scale method using 2 mL of reaction mixture containing 50 g/L of pretreated solids, and at an enzyme load of 10 mg proteinig cellulose. The results were further validated at a higher scale in a setup consisting of 20 mL of reaction mixture with a substrate concentration of 100 g/L. For all the cellulase preparations, and regardless of the experiment scale, glycerol-pretreated bagasse displayed better enzymatic convertibility than acid-pretreated bagasse. It was observed that when the enzyme load is increased from 2 to 10 mg/g, the cellulose conversion is improved but the specific hydrolysis rate is only marginally affected. Although the Trichoderma-based commercial cocktail CC-3 led to higher hydrolysis rates and conversions than all the other enzyme preparations, the Penicillium-based cellulases, especially PV-Xyl PCA and PV-Hist BGL, also showed good potential. PV-Xyl PCA was relatively effective for hydrolysing acid-pretreated bagasse, and PV-Hist BGL displayed reasonable performance in the hydrolysis in absence of exogenous beta-glucosidase. 

Place, publisher, year, edition, pages
2015. Vol. 77, 382-390 p.
Keyword [en]
Cellulases, Enzymatic hydrolysis, Pretreatment, Sugarcane bagasse, Penicillium
National Category
Agricultural Sciences Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-113839DOI: 10.1016/j.indcrop.2015.09.015ISI: 000366065200045OAI: oai:DiVA.org:umu-113839DiVA: diva2:911567
Available from: 2016-03-13 Created: 2016-01-04 Last updated: 2016-03-13Bibliographically approved

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Martin, Carlos
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