Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose
Nitrogen explosive decompression pretreatment was tested on barley straw, aspen wood, and pine wood in a two-step pretreatment approach. The two-step approach aims to avoid the uncontrolled degradation of hemicellulose during pretreatment and to recover high sugar yields from hemicellulose and cellu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/23/8898 |
| _version_ | 1797463360422281216 |
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| author | Nikki Sjulander Timo Kikas |
| author_facet | Nikki Sjulander Timo Kikas |
| author_sort | Nikki Sjulander |
| collection | DOAJ |
| description | Nitrogen explosive decompression pretreatment was tested on barley straw, aspen wood, and pine wood in a two-step pretreatment approach. The two-step approach aims to avoid the uncontrolled degradation of hemicellulose during pretreatment and to recover high sugar yields from hemicellulose and cellulose. Additionally, the pretreated biomass was filtered after each pretreatment step with a fine metal sieve so that fermentation and hydrolysis inhibitors were removed. A total sugar yield of 43 g per 100 g of dry biomass was achieved from barley straw and aspen wood. For pine wood, the total sugar yield was significantly lower, with 12 g per 100 g of dry biomass. Possible reasons for this low sugar yield are the adsorption and deactivation of cellulases on softwood hemicellulose and on repolymerized lignin after pretreatment. |
| first_indexed | 2024-03-09T17:49:31Z |
| format | Article |
| id | doaj.art-8e7a1acd30f74cc79d534471644f4b83 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T17:49:31Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8e7a1acd30f74cc79d534471644f4b832023-11-24T10:52:01ZengMDPI AGEnergies1996-10732022-11-011523889810.3390/en15238898Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and HemicelluloseNikki Sjulander0Timo Kikas1Chair of Biosystems Engineering, Institute of Forestry and Engineering, Estonian University of Life Sciences, 51014 Tartu, EstoniaChair of Biosystems Engineering, Institute of Forestry and Engineering, Estonian University of Life Sciences, 51014 Tartu, EstoniaNitrogen explosive decompression pretreatment was tested on barley straw, aspen wood, and pine wood in a two-step pretreatment approach. The two-step approach aims to avoid the uncontrolled degradation of hemicellulose during pretreatment and to recover high sugar yields from hemicellulose and cellulose. Additionally, the pretreated biomass was filtered after each pretreatment step with a fine metal sieve so that fermentation and hydrolysis inhibitors were removed. A total sugar yield of 43 g per 100 g of dry biomass was achieved from barley straw and aspen wood. For pine wood, the total sugar yield was significantly lower, with 12 g per 100 g of dry biomass. Possible reasons for this low sugar yield are the adsorption and deactivation of cellulases on softwood hemicellulose and on repolymerized lignin after pretreatment.https://www.mdpi.com/1996-1073/15/23/8898bioethanolbiofuelsenzymatic hydrolysisfermentationlignocellulosic inhibitors |
| spellingShingle | Nikki Sjulander Timo Kikas Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose Energies bioethanol biofuels enzymatic hydrolysis fermentation lignocellulosic inhibitors |
| title | Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose |
| title_full | Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose |
| title_fullStr | Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose |
| title_full_unstemmed | Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose |
| title_short | Two-Step Pretreatment of Lignocellulosic Biomass for High-Sugar Recovery from the Structural Plant Polymers Cellulose and Hemicellulose |
| title_sort | two step pretreatment of lignocellulosic biomass for high sugar recovery from the structural plant polymers cellulose and hemicellulose |
| topic | bioethanol biofuels enzymatic hydrolysis fermentation lignocellulosic inhibitors |
| url | https://www.mdpi.com/1996-1073/15/23/8898 |
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