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Stabilisation of po...
Stabilisation of polysaccharides during alkaline pretreatment of wood combined with enzyme-supported extractions in a biorefinery
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- Wang, Yan (författare)
- KTH,Träkemi och massateknologi,Wallenberg Wood Science Center
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- Azhar, Shoaib (författare)
- KTH,Träkemi och massateknologi,Wallenberg Wood Science Center
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- Lindström, Mikael E. (författare)
- KTH,Träkemi och massateknologi
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- Henriksson, Gunnar (författare)
- KTH,Träkemi och massateknologi
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(creator_code:org_t)
- 2014-11-25
- 2015
- Engelska.
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Ingår i: Journal of wood chemistry and technology. - : Informa UK Limited. - 0277-3813 .- 1532-2319. ; 35:2, s. 91-101
- Relaterad länk:
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http://10.1080/02773...
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https://kth.diva-por... (primary) (Raw object)
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http://kth.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Specific enzymes have been demonstrated to increase the possibilities for extracting wood polymers. Enzymatic treatment requires an open wood structure, which was achieved by extended impregnation of the wood. However, some of the hemicelluloses, primarily glucomannan, and lignin were lost during the impregnation. To improve the carbohydrate yield, three glucomannan modification agents: sodium borohydride, polysulphide and anthraquinone, were used, which increased the yields of the impregnated materials from 76.6% to 89.6%, 81.3% and 80.0%, respectively. Through the use of additives, most of the glucomannan could be retained in the wood while still allowing the enzymes to penetrate the wood and attack the polymers. The additives also increased the extraction yield from 9 to 12% w/w wood. Gamanase treatment prior to the extraction increased the extraction yield to 14%. Of the three stabilising agents, sodium borohydride was the most efficient, providing the highest extraction yields.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
Nyckelord
- extended impregnation
- peeling reaction
- sodium borohydride (NaBH4)
- polysulphide (PS)
- anthraquinone (AQ)
- extraction
- biorefinery
- Fiber- och polymervetenskap
- Fibre and Polymer Science
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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