2024-03-29T14:37:39Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/399062020-11-13T13:29:42Zcom_10261_15com_10261_6com_10261_86com_10261_1col_10261_268col_10261_339
DIGITAL.CSIC
author
Gutiérrez Suárez, Ana
author
Río Andrade, José Carlos del
author
Rencoret, Jorge
author
Ibarra, David
author
Martínez, Ángel T.
funder
European Commission
funder
Consejo Superior de Investigaciones Científicas (España)
funder
Ence Energía y Celulosa
2011-09-23T10:03:25Z
2011-09-23T10:03:25Z
2006
Applied Microbiology and Biotechnology 72:845-851 (2006)
http://hdl.handle.net/10261/39906
10.1007/s00253-006-0346-1
http://dx.doi.org/10.13039/501100000780http://dx.doi.org/10.13039/501100003339
Lipophilic extractives in wood and other lignocellulosic materials exert a negative impact in pulp and paper manufacturing causing the so-called pitch problems. In this work, the appropriateness of an enzymatic treatment using the laccase-mediator system for pitch biocontrol is evaluated. With this purpose, three pulp types representative for different raw materials and pulping processes - eucalypt kraft pulping, spruce thermomechanical pulping and flax soda-anthraquinone pulping - were treated with a high-redox potential laccase from the basidiomycete Pycnoporus cinnabarinus in the presence of 1-hydroxybenzotriazole as a redox mediator. The gas chromatography and gas chromatography/mass spectrometry analyses of the lipophilic extractives from the enzymatically-treated pulps revealed that the laccase-mediator treatment completely (or greatly) removed most of the pitch-causing lipophilic compounds present in the different pulps including: i) free and conjugated sitosterol in eucalypt paper pulp; ii) resin acids, sterol esters and triglycerides in spruce pulp; and iii) sterols and fatty alcohols in the flax pulp. Different amounts of free and conjugated 7-oxosterols were found as intermediate products in the oxidation of pulp sterols. Therefore, the laccase-mediator treatment is reported as an efficient method for removing pitch-causing lipophilic compounds from paper pulps obtained from hardwood, softwood and nonwoody plants.
eng
openAccess
Laccase-mediator
Industrial biocatalysts
Fungal enzymes
Pycnoporus cinnabarinus
Pitch
Paper pulp
Main lipophilic extractives in different paper pulps can be removed using the laccase-mediator system
artículo
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URL
https://digital.csic.es/bitstream/10261/39906/1/Main%20lipophilic%20extractives%20in%20different%20paper%20pulps%20can%20be%20removed%20using%20the%20laccase-mediator%20system.pdf
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application/pdf
Main lipophilic extractives in different paper pulps can be removed using the laccase-mediator system.pdf
URL
https://digital.csic.es/bitstream/10261/39906/4/Main%20lipophilic%20extractives%20in%20different%20paper%20pulps%20can%20be%20removed%20using%20the%20laccase-mediator%20system.pdf.txt
File
MD5
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text/plain
Main lipophilic extractives in different paper pulps can be removed using the laccase-mediator system.pdf.txt