Optimizing delignification and pitch removal by treating eucalypt pulp with Myceliophthora laccase and a phenolic mediator
This work shows the ability of two natural phenols, namely syringaldehyde and methyl syringate, to act as mediators of recombinant Myceliophthora thermophila laccase (MtL) in eucalypt-pulp delignification. After alkaline peroxide extraction, the properties of the enzymatically-treated pulps improved...
| Autores: | , , , , , |
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| Formato: | otro |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/86330 |
| Acesso em linha: | http://hdl.handle.net/10261/86330 |
| Access Level: | acceso abierto |
| Palavra-chave: | Delignification Pitch Eucalyptus Pulp Laccases Myceliophthora thermophila |
| Resumo: | This work shows the ability of two natural phenols, namely syringaldehyde and methyl syringate, to act as mediators of recombinant Myceliophthora thermophila laccase (MtL) in eucalypt-pulp delignification. After alkaline peroxide extraction, the properties of the enzymatically-treated pulps improved with respect to the control. Likewise, removal of the main lipophilic extractives present in eucalypt pulp, such as free and conjugated sterols, was observed after the above laccase-mediator treatments. In the same study, the doses of both MtL and methyl syringate were reduced, and results compatible with industrial implementation were obtained, taking also advantage from the high-yield production of the recombinant enzyme that enables its commercial availability. |
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