scholarly journals Fiber Surface and Paper Technical Properties of Eucalyptus globulus and Eucalyptus nitens Pulps after Modified Cooking and Bleaching

BioResources ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Rudine Antes ◽  
Olli Pekka Joutsimo
Keyword(s):  
Eucalyptus Globulus ◽  
Fiber Surface ◽  
Eucalyptus Nitens ◽  
Technical Properties

scholarly journals Wound wood formation in Eucalyptus globulus and Eucalyptus nitens: anatomy and chemistry

2003 ◽  
Vol 33 (12) ◽  
pp. 2331-2339 ◽  
Author(s):  
Alieta Eyles ◽  
Noel W Davies ◽  
Caroline Mohammed
Keyword(s):  
Eucalyptus Globulus ◽  
Wound Repair ◽  
Wood Formation ◽  
Negative Ion ◽  
Eucalyptus Nitens ◽  
Diverse Range ◽  
Wound Site ◽  
Formylated Phloroglucinol Compounds ◽  
Wood Extracts ◽  
Volatile Terpenes

The wound-associated wood that developed 17 months following artificial xylem injury in Eucalyptus globulus (Labill) and Eucalyptus nitens (Maiden) was examined anatomically and chemically. This new tissue located immediately adjacent to the wound site and termed "wound wood" was highly variable consisting of callus, altered wood of increased parenchyma density, and dark extractives, visible to the naked eye. Subsequent chemical analysis of crude wound wood extracts by HPLC coupled to negative ion electrospray mass spectrometry revealed the presence of a diverse range of polyphenolic compounds including hydrolysable tannins, proanthocyanidins, flavanone glycosides, and formylated phloroglucinol compounds. A number of polyphenols were unequivocally identified including engelitin, pedunculagin, and tellimagrandin I. Other compounds present in wound wood include various hydroxystilbene glycosides and volatile terpenes. The importance of the diverse range of secondary metabolites detected in wound wood is discussed in relation to tree wound repair responses.

Overexpression of an SKn-dehydrin gene from Eucalyptus globulus and Eucalyptus nitens enhances tolerance to freezing stress in Arabidopsis

Trees ◽  
2016 ◽  
Vol 30 (5) ◽  
pp. 1785-1797 ◽  
Author(s):  
Paula Aguayo ◽  
Javiera Sanhueza ◽  
Felipe Noriega ◽  
Margaret Ochoa ◽  
Regis Lefeuvre ◽  
...  
Keyword(s):  
Eucalyptus Globulus ◽  
Freezing Stress ◽  
Eucalyptus Nitens ◽  
Dehydrin Gene

scholarly journals Informe Técnico 148: Modelo de crecimiento para eucalipto en Chile. (Avances de investigación)

2000 ◽  
Author(s):  
Carlos Bahamóndez V. ◽  
◽  
Mauro Ernesto Ferrando Toso ◽  
Marjorie Caroline Martin Stuven ◽  
Juan Carlos Pinilla Suárez
Keyword(s):  
Eucalyptus Globulus ◽  
Eucalyptus Nitens

Documento que contiene el trabajo desarrollado por Infor en la actualización y escalamiento de las funciones que componen el modelo de crecimiento para eucalipto: crecimiento en altura, mortalidad natural, rendimiento en área basal y predicción del volumen; utilizando la información generada a través de los proyectos desarrollados por Infor y Fundación Chile. Además, se describen los antecedentes utilizados para generar dichas funciones. especie) con los de versiones anteriores (EUCA2.1). Finalmente, se hace hincapié en la necersidad de mantener actualizadas las bases de datos para realizar nuevos escalamientos. En t érminos de distribucion de edades, prácticamente toda la información se concentra entre los 2-12 años para Eucalyptus globulus y 2-7 años para Eucalyptus nitens.

Characterization of non-cellulosic glucans in Eucalyptus globulus Labill. wood and kraft pulp

Holzforschung ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 478-482 ◽  
Author(s):  
Sara A. Lisboa ◽  
Dmitry V. Evtuguin ◽  
Carlos Pascoal Neto
Keyword(s):  
Eucalyptus Globulus ◽  
Fiber Surface ◽  
2D Nmr ◽  
Structural Features ◽  
Kraft Pulping ◽  
Hot Water ◽  
Pulp Yield ◽  
Naoh Solution ◽  
Nmr Techniques

Abstract The amount of non-cellulosic glucans in Eucalyptus globulus wood (approx. 4.5%) was assessed by extraction of sawdust with a 0.5 M NaOH solution at 90–120°C and the structural features were elucidated in a glucan-enriched polysaccharide fraction isolated by hot water extraction (120°C, 2 h). Isolated soluble glucans were characterized by wet chemistry methods and a set of 1D and 2D NMR techniques. The major proportion of glucans consisted of amylose (20%) and amylopectin (80%), although a small proportion of β-(1→3)-glucan (<0.2% on wood weight) was also detected. Although glucans are easily removed in the initial phase of kraft pulping, notable amounts were found in unbleached pulp and it was supposed that in the final stage of kraft pulping a fraction of α-glucan is precipitated onto the fiber surface and contributes to the pulp yield.

Energy evaluation of the Eucalyptus globulus and the Eucalyptus nitens in the north of Spain (Cantabria)

2006 ◽  
Vol 451 (1-2) ◽  
pp. 57-64 ◽  
Author(s):  
S. Pérez ◽  
C.J. Renedo ◽  
A. Ortiz ◽  
M. Mañana ◽  
D. Silió
Keyword(s):  
Eucalyptus Globulus ◽  
Eucalyptus Nitens ◽  
The North ◽  
Energy Evaluation ◽  
North Of Spain

Growth responses to thinning and pruning in Eucalyptus globulus, Eucalyptus nitens, and Eucalyptus grandis plantations in southeastern Australia

2012 ◽  
Vol 42 (1) ◽  
pp. 75-87 ◽  
Author(s):  
David I. Forrester ◽  
Thomas G. Baker
Keyword(s):  
Tree Growth ◽  
Eucalyptus Globulus ◽  
Eucalyptus Grandis ◽  
Eucalyptus Nitens ◽  
Growth Responses ◽  
Southeastern Australia ◽  
Crown Length

Growth responses to pruning or thinning are well documented but their interactions are not, even though they are sometimes performed simultaneously. Growth responses to thinning and pruning were examined in nine plantation silvicultural experiments at five sites in southeastern mainland Australia. The species studied were Eucalyptus globulus Labill., Eucalyptus nitens (Deane and Maiden) Maiden, and Eucalyptus grandis Hill ex Maiden. Thinning from about 1100–1300 trees·ha–1 to about 300 or 500 trees·ha–1 at either age 3–4 years or 7–10 years increased the volume of sawlog crop trees in all species. Multiple lift pruning to 6.5 m height on the sawlog crop trees that retained at least 70% of the live crown length at any lift significantly reduced tree growth at only one of the six site–species combinations where both thinning and pruning were studied. And here, thinning interacted with pruning such that the pruning effects were not significant in unthinned stands because only shaded and inefficient foliage was removed. This study shows that thinning and pruning can interact to influence sawlog crop tree growth and this interaction is influenced by site.

Sign in / Sign up

Export Citation Format

Share Document