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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/4512

Title: Non-polluting wood and pulp delignification: Biomimetic ligninase system
Authors: Erismann, N.D.
Fernandez, A.M.
Baeza, J.
Freer, J.
Mansilla, H.D.
Duran, N.
Issue Date: 1990
Publisher: Springer Netherlands
Citation: Biotechnology Letters 12(4): 305-308
Abstract: We report the delignification ofPinus radiata D Don,Eucalyptus globulus andEucalyptus grandis woods (formic acid treated and untreated) by 2 h treatment with a hemin/hydrogen peroxide system. The untreated chips and sawdust ofE. globulus were 30% and 50% delignified respectively. No significant effects were found forP. radiata sawdust;P. radiata treated chips (organosolv pulp) did not show any further delignification upon hemin/peroxide action, 25% delignification was achieved in untreated chips. In the case ofE. grandis untreated wood the delignification was better in sawdust than in chips, but in smaller percentage than in the otherEucalyptus species. This relation is maintained in substrates, treated with formic acid or untreated. The delignification of chips in both species ofEucalyptus was improved when they were pre-treated with formic acid. The loss of lignin in theE. grandis andE. globulus sawdust (pre-treated with formic acid) was 79% and 75% respectively.
Description: Mansilla, M. Department of Chemistry, Universidad de Talca, Chile.
URI: http://dspace.utalca.cl/handle/1950/4512
ISSN: 0141-5492
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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