Abstract：
:This paper evaluates five phenolic compounds as mediators for kenaf pulp biobleaching by laccase. The results have been compared with the treatment using a non-phenolic mediator, 1-hydroxybenzotriole and laccase alone. The influence of the nature of the chemical mediators used on various pulp properties is discussed. In addition to oxidizing lignin, the phenolic radicals formed in the process take part in condensation and grafting reactions in enzymatic stage. After biobleaching sequence (LP), syringaldehyde was shown to be the best phenolic mediator, allowing a delignification of 43% and 72% ISO brightness. These results were similar to the use of laccase alone due to the role as mediators of syringyl units resulting from oxidative lignin degradation. As a novelty, the study was supplemented with thermogravimetric analysis, with emphasis on the crystallinity degree of the cellulose surface and the aim of elucidating the action mechanisms of laccase-mediator systems on fiber.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Andreu G,Barneto AG,Vidal Tdoi
10.1016/j.biortech.2012.12.014subject
Has Abstractpub_date
2013-02-01 00:00:00pages
431-8eissn
0960-8524issn
1873-2976pii
S0960-8524(12)01869-Xjournal_volume
130pub_type
杂志文章abstract：:Recovery of bioactive compounds, such as proteolytic enzymes, from waste streams is a means to both recuperate value and reduce environmental pollution. Previously optimized lab-scale parameters for the recovery of a stable crude protease fraction from Pacific whiting (Merluccius productus) surimi wash water were test...
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更新日期：2019-05-01 00:00:00
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pub_type： 杂志文章
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更新日期：2008-10-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2009.12.070
更新日期：2010-05-01 00:00:00
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更新日期：2012-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.biortech.2008.11.063
更新日期：2009-11-01 00:00:00
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更新日期：2015-02-01 00:00:00
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pub_type： 杂志文章
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2013-02-01 00:00:00
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更新日期：2013-03-01 00:00:00
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更新日期：2013-03-01 00:00:00
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更新日期：2017-12-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章,评审
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更新日期：2001-05-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
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更新日期：2012-07-01 00:00:00
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journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2013.01.036
更新日期：2013-04-01 00:00:00
abstract：:The present study emphasizes the importance of overcoming proton limitation in a microbial fuel cell operated on domestic wastewater. When the anode-treated effluent was allowed to trickle into the cathodic compartment (full-loop operation), high COD and suspended solids removal efficiencies over 75% and 84%, respecti...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2011.02.098
更新日期：2011-05-01 00:00:00
