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Formic acid/acetone‐organosolv pulping of white‐rotted Pinus radiata softwood

2000; Wiley; Volume: 75; Issue: 12 Linguagem: Inglês

10.1002/1097-4660(200012)75

1097-4660

André Ferraz, Jaime Rodrı́guez, Juanita Freer, Jaime Baeza,

Slime Mold and Myxomycetes Research

Journal of Chemical Technology & BiotechnologyVolume 75, Issue 12 p. 1190-1196 Research Article Formic acid/acetone-organosolv pulping of white-rotted Pinus radiata softwood† André Ferraz, Corresponding Author André Ferraz aferraz@debiq.faenquil.br Departamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-000 Lorena, SP, BrazilDepartamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-000 Lorena, SP, Brazil===Search for more papers by this authorJaime Rodríguez, Jaime Rodríguez Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this authorJuanita Freer, Juanita Freer Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this authorJaime Baeza, Jaime Baeza Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this author André Ferraz, Corresponding Author André Ferraz aferraz@debiq.faenquil.br Departamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-000 Lorena, SP, BrazilDepartamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-000 Lorena, SP, Brazil===Search for more papers by this authorJaime Rodríguez, Jaime Rodríguez Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this authorJuanita Freer, Juanita Freer Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this authorJaime Baeza, Jaime Baeza Renewable Resource Laboratory, Universidad de Concepción, Casilla 160-C, Concepción ChileSearch for more papers by this author First published: 20 November 2000 https://doi.org/10.1002/1097-4660(200012)75:12 3.0.CO;2-KCitations: 26 † Part of this work was presented at the 7th International Conference on Biotechnology in the Pulp and Paper Industry, Vancouver, Canada, 1998 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Organosolv pulping of fungally pretreated samples of Pinus radiata was evaluated. A screening study using five white-rot fungi indicated that Ceriporiopsis subvermisopora and Punctularia artropurpurascens were the most selective ones for lignin degradation. These fungi were further cultured in bioreactors containing 2.5 kg of wood chips. Fungally-pretreated samples were delignified by formic acid/acetone (7:3) at 150 °C. Pulping kinetics and strength properties of the resulting unbleached pulps were evaluated. Delignification rates and xylan solubilization rates were higher for the decayed samples than for the undecayed control, except for the sample biotreated with P artropurpurascens for 30 days. C subvermispora proved appropriate for treating the wood samples before organosolv pulping, since pretreatment with this fungus resulted in faster wood delignification and pulps with lower residual lignin. Increases in tensile index ranging from 3% to 22% were observed for most pulps prepared from biotreated samples, independently both of the fungal species used in the pretreatment and of the extent of the wood biodegradation expressed as wood weight loss. However, tear and burst indexes and brightness were lower than or similar to those of pulps prepared from the undecayed control. © 2000 Society of Chemical Industry Citing Literature Volume75, Issue12December 2000Pages 1190-1196 RelatedInformation