Results 11 to 20 of about 23,645 (231)

Structural alterations of lignins in transgenic poplars with depressed cinnamyl alcohol dehydrogenase or caffeic acid O-methyltransferase activity have an opposite impact on the efficiency of industrial kraft pulping [PDF]

, 1999
International audienceWe evaluated lignin profiles and pulping performances of 2-year-old transgenic poplar (Populus tremula × Populus alba) lines severely altered in the expression of caffeic acid/5-hydroxyferulic acidO-methyltransferase (COMT) or ...
Boerjan, Wout, de Nadaï, Véronique, Ferret, V, Jouanin, Lise, Lapierre, Catherine, Leplé, Jean-Charles, Petit-Conil, Michel, Pilate, Gilles, Pollet, Brigitte, Romero, J, Toval, G   +10 more
core   +3 more sources

Kraft Lignin Depolymerization in an Ionic Liquid without a Catalyst

BioResources, 2015
In this paper, the depolymerization of lignin was successfully achieved by the thermal treatment of kraft lignin in butyl-1,8-diazabicyclo[5.4.0]undec-7-enium chloride ([DBUC4+][Cl-]) without a catalyst.
Amadou Diop, Khalil Jradi, Claude Daneault, Daniel Montplaisir   +3 more
doaj   +1 more source

Aktivitas Ligninolitik Beberapa Jamur Aphyllophorales dan Kemampuannya Mendegradasi Lignin pada Lindi Hitam [PDF]

, 2015
Fourteen local isolate Aphyllophorales fungi were screened their ligninolytic activity. The isolate with highest ligninolytic activity was tested it capability to degrade kraft blackliquor lignin.
Jelita, R. (Ratna), Linda, T. M. (Tetty), Martina, A. (Atria), Veronika, N. (Nila), Zul, D. (Delita)   +4 more
core   +4 more sources

Kraft Lignin Behaviour in Diffused Aeration of Kraft Effluents

Water Science and Technology, 1988
Diffused aeration experiments carried out using a Kraft black liquor in batch reactors at 21±1ΩC were performed in order to characterize the relative importance of the mechanisms of chemical oxidation and condensation of lignin structures upon COD, lignin and colour removal and also to evaluate the influence of agitation intensity on these mechanisms ...
L. Larrea, C.F. Forster, D. Melé
openaire   +1 more source

Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content [PDF]

, 2016
A set of seven different lignin preparations was generated from a range of organosolv (acidic, alkaline, ammonia-treated, and dioxane-based), ionic liquid, autohydrolysis, and Kraft pretreatments of lignocelluloses.
Bouxin, Florent, Bugg, Timothy D. H., Hallett, Jason, Jackson, S. David, Lancefield, Christopher S., Rashid, Goran M. M., Rodríguez, Jaime, Tu, Wei-Chien, Wasak, Agata, Westwood, Nicholas J., Zein, Sharif   +10 more
core   +4 more sources

Qualitative Structural Characterization of Two Lignin Samples and Quantitative Determination of Hydroxyl and Methoxyl Functional Groups in Kraft Lignin via Acetylation [PDF]

تحقیقات علوم چوب و کاغذ ایران, 2017
In this research, two types of lignin, i.e. one extracted from industrial waste water of the Iran wood and paper (choka) factory as black liquor and another provided from Aldrich company, were studied.
Mehdi Abdolahi, Said amir Mosavian, Akbar Varamsh, Amin Asadi   +3 more
doaj   +1 more source

Protein engineering of Pseudomonas fluorescens peroxidase Dyp1B for oxidation of phenolic and polymeric lignin substrates [PDF]

, 2019
Directed evolution was applied to dye-decolourizing peroxidase Dyp1B from Pseudomonas fluorescens Pf-5, in order to enhance the activity for oxidation of phenolic and lignin substrates.
Ashley, Ben, Bugg, Timothy D H, Ehibhatiomhan, Austine, Huang, Yuling, Mendel Williams, Sharon, Pour, Rahman Rahman, Rashid, Goran   +6 more
core   +2 more sources

Kraft Lignin Conversion into Energy Carriers under the Action of Electromagnetic Radiation

Journal of Chemistry, 2019
In this work, it was found that the deposition of iron salts (iron acetate) on kraft lignin at extremely low concentrations of 0.1 wt.% leads to a sharp increase in the absorbing capacity of microwave radiation by kraft lignin at its power of 1 kW and ...
P. Zharova, O. V. Arapova, G. I. Konstantinov, A. V. Chistyakov, M. V. Tsodikov   +4 more
doaj   +1 more source

Tailor-made alkaliphilic and thermostable fungal laccases for industrial wood processing

Biotechnology for Biofuels and Bioproducts, 2022
Background During the kraft process to obtain cellulosic pulp from wood, most of the lignin is removed by high-temperature alkaline cooking, released in the black liquors and usually incinerated for energy. However, kraft lignins are a valuable source of
David Rodríguez-Escribano, Rocío Pliego-Magán, Felipe de Salas, Pablo Aza, Patrizia Gentili, Petri Ihalainen, Thomas Levée, Valérie Meyer, Michel Petit-Conil, Sandra Tapin-Lingua, Michael Lecourt, Susana Camarero   +11 more
doaj   +1 more source

Efeito do conteúdo e da natureza da lignina residual na eficiência e na seletividade do branqueamento com ozônio Effect of residual lignin content and nature on the efficiency and selectivity of ozone bleaching

Revista Árvore, 2003
Neste estudo foram avaliados os efeitos do conteúdo e da natureza da lignina residual na eficiência e na seletividade do branqueamento com ozônio de polpa kraft convencional (kraft) e pré-deslignificada com oxigênio (kraft-O).
Elenice Pereira Maia, Jorge Luiz Colodette   +1 more
doaj   +1 more source