Výsledky vyhledávání - "Marcela Norambuena"

Akademický článek

Optimization of Experimental Variables to Modify Lignin from Eucalyptus globulus under Alkaline Catalysis

Autor: Marcela Norambuena, Claudia Vidal, Lissette Carrasco, Pablo Reyes, Carolina Parra, David Contreras, Regis Teixeira Mendonça

Publikováno v: BioResources, Vol 11, Iss 1, Pp 1828-1842 (2016)

Conditions to increase phenolic hydroxyl groups (OH-Phe) in organosolv lignin using alkaline catalysts (NaOH and KOH) were optimized with the purpose of increasing the reactivity of lignin and to evaluate the effect on the structure of the newly gene

Externí odkaz: https://doaj.org/article/3c345f3fc65048ef873f217a3e4230c9

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Akademický článek

Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes

Autor: María Graciela Aguayo, José Ruiz, Marcela Norambuena, Regis Teixeira Mendonça

Publikováno v: Maderas: Ciencia y Tecnología, Vol 17, Iss 3 (2015)

The chemical structure of dioxane lignins isolated from two groups of Eucalyptus globulus genotypes with contrasting pulpwood characteristics were evaluated. Six genotypes were selected and separated in two groups (G1 and G2) based on differences in

Externí odkaz: https://doaj.org/article/de8a42ca10cd44e8b4b94139cb20f7ff

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Manganese peroxidase and biomimetic systems applied toin vitrolignin degradation inEucalyptus grandismilled wood and kraft pulps

Autor: Fernando Masarin, Ramires Heloisa Ogushi Romeiro, Marcela Norambuena, Paulo C. Pavan, Braz José Demuner, André Ferraz

Publikováno v: Journal of Chemical Technology & Biotechnology. 91:1422-1430

BACKGROUND Organoperoxyl radicals generated from unsaturated fatty acids can initiate lignin degradation reactions. RESULTS Manganese peroxidase (MnP, EC 1.11.1.13) produced by the basidiomycete Ceriporiopsis subvermispora and biomimetic systems were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c24ef6453fffb5677443dc7cc42ccaf7
https://doi.org/10.1002/jctb.4739

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Transcript abundance of enzymes involved in lignin biosynthesis of Eucalyptus globulus genotypes with contrasting levels of pulp yield and wood density

Autor: Jaime Rodríguez, Claudio Balocchi, Carolina Iturra, Sofía Valenzuela, Marcela Norambuena, Renán García, Juan Pedro Elissetche, Regis Teixeira Mendonça

Publikováno v: TREE GENETICS & GENOMES
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

One hundred genotypes of Eucalyptus globulus were ranked according to specific consumption of wood (cubic meters of wood needed to produce 1 ton of pulp). Ten of the most contrasting genotypes were separated in two groups of five clones each; group 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1462d24182149fbd0d5e9559451692c3
https://doi.org/10.1007/s11295-011-0367-5

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Linoleic acid peroxidation and lignin degradation by enzymes produced by Ceriporiopsis subvermispora grown on wood or in submerged liquid cultures

Autor: Fernando Masarin, Marcela Norambuena, Juanita Freer, André Ferraz, Gina Gabriela Seabra Cunha

Publikováno v: ENZYME AND MICROBIAL TECHNOLOGY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Ceriporiopsis subvermispora is a white-rot fungus used in biopulping processes and seems to use the fatty acid peroxidation reactions initiated by manganese-peroxidase (MnP) to start lignin degradation. The present work shows that C. subvermispora wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ed375159b9297a4495db0f0910f34fb
https://doi.org/10.1016/j.enzmictec.2009.11.006

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Determination of Arylglycerol−β-Aryl Ether Linkages in Enzymatic Mild Acidolysis Lignins (EMAL): Comparison of DFRC/31P NMR with Thioacidolysis

Autor: Marcela Norambuena, Anderson Guerra, Dimitris S. Argyropoulos, Juanita Freer

Publikováno v: Journal of Natural Products. 71:836-841

Enzymatic mild acidolysis lignins (EMAL) isolated from different species of softwood and Eucalyptus globulus were submitted to comparative analysis that included thioacidolysis, derivatization followed by reductive cleavage (DFRC), and DFRC followed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21da80f0a23e9c0ddbcb9592f212f401
https://doi.org/10.1021/np800080s

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Quantification and control of runoff and soil erosion on avocado orchards on ridges along steep-hillslopes

Autor: Eduardo Salgado, Marco Cisternas, Marcela Norambuena, Cristian Youlton, Jaime Biggs, Paulina Espejo, Alexander Neaman

Publikováno v: Ciencia e investigación agraria v.37 n.3 2010
SciELO Chile
CONICYT Chile
instacron:CONICYT

Soil erosion increases after building downward ridges along steep hillslopes, in particular during the first winter. This erosion decreases when trees grow, but runoff increases. This study presents results of erosion under five different treatments:

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21aaebbb281dfcd8b6fd85a2dda8948e
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000300010

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Influence of lignin structural features on eucalyptus globulus kraft pulping

Autor: Claudio Balocchi, Jaime Cuevas Rodríguez, Juan Pedro Elissetche, Juanita Freer, Anderson Guerra, Sofía Valenzuela, Marcela Norambuena

Publikováno v: INDUSTRIAL AND ENGINEERING CHEMISTRY RESEARCH
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

Clones of Eucalyptus globulus Labill. (5- to 7-year-old), from a common geographic area, were evaluated for chemical pulping easiness. Significant variations were observed in the pulp yield and specific wood consumption to produce pulps with similar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f44461eb2ac30e38bfbfbb37c640065

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