Leaf/Wood Chemical Composition

2020 ◽  
pp. 41-49
Author(s):  
Humberto Gonzaález Rodríguez ◽  
Ratikanta Maiti ◽  
Ch. Aruna Kumari
Keyword(s):  
Chemical Composition ◽  
Wood Chemical Composition

scholarly journals Identification of genetic markers and wood properties that predict wood biorefinery potential in aspen bioenergy feedstock (Populus tremula).

2021 ◽  
Author(s):  
Sacha Escamez ◽  
Mikko Luomaranta ◽  
Niklas Mahler ◽  
Madhavi Latha Gandla ◽  
Kathryn M Robinson ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Genetic Markers ◽  
Genome Wide Association Study ◽  
Growth Traits ◽  
Wood Properties ◽  
Yield Traits ◽  
Bioenergy Feedstock ◽  
European Aspen ◽  
Wood Traits ◽  
Wood Chemical Composition

Wood represents the majority of the biomass on lands, and it constitutes a renewable source of biofuels and other bioproducts. However, wood is recalcitrant to bioconversion, meaning that feedstocks must be improved. We investigated the properties of wood that affect bioconversion, as well as the underlying genetics, to help identify superior biorefinery tree feedstocks. We recorded as many as 65 wood-related and growth traits in a population of European aspen natural genotypes. These traits included three growth and field performance traits, 20 traits for wood chemical composition, 17 traits for wood anatomy and structure, and 25 wood saccharification traits as indicators of bioconversion potential. We used statistical modelling to determine which wood traits best predict bioconversion yield traits. This way, we identified a core set of wood properties that predict bioprocessing traits. Several of these predictor traits showed high broad-sense heritability, suggesting potential for genetic improvement of feedstocks. Finally, we performed genome-wide association study (GWAS) to identify genetic markers for yield traits or for wood traits that predict yield. GWAS revealed only a few genetic markers for saccharification yield traits, but many more SNPs were associated with wood chemical composition traits, including predictors traits for saccharification. Among them, 16 genetic markers associated specifically with lignin chemical composition were situated in and around two genes which had not previously been associated with lignin. Our approach allowed linking aspen wood bioprocessing yield to wood properties and the underlying genetics, including the discovery of two new potential regulator genes for wood chemical composition.

scholarly journals Trees as bioindicators of environmental pollution and its impact on wood chemical composition

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2184-2187
Author(s):  
Carmen-Alice Teacă
Keyword(s):  
Chemical Composition ◽  
Environmental Pollution ◽  
Climate Changes ◽  
Normal Growth ◽  
Growth Conditions ◽  
Wood Cellulose ◽  
Biomass Resources ◽  
Wood Chemical Composition ◽  
Structural Polymers

Trees provide one of the most versatile biomass resources for many applications, namely wood. The chemical composition of wood determines its properties, being of real significance for its further capitalization, and depending on many factors. In nature, trees’ biomass is subjected to considerable pollution stress with further alteration of their normal growth conditions. Some correlations have been established between wood’s chemical composition and its further exploitation accordingly to particular circumstances of climate changes and pollution. The content of the main structural polymers from wood, cellulose and lignin, as well other components undergoes notable changes under the influence of pollution phenomena.

scholarly journals XPS characterization of wood chemical composition after heat-treatment

2006 ◽  
Vol 38 (10) ◽  
pp. 1336-1342 ◽  
Author(s):  
G. Nguila Inari ◽  
M. Petrissans ◽  
J. Lambert ◽  
J. J. Ehrhardt ◽  
P. Gérardin
Keyword(s):  
Heat Treatment ◽  
Chemical Composition ◽  
Xps Characterization ◽  
Wood Chemical Composition

scholarly journals Correction: Wood Chemical Composition in Species of Cactaceae: The Relationship between Lignification and Stem Morphology

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0130240 ◽  
Author(s):  
Jorge Reyes-Rivera ◽  
Gonzalo Canché-Escamilla ◽  
Marcos Soto-Hernández ◽  
Teresa Terrazas
Keyword(s):  
Chemical Composition ◽  
Wood Chemical Composition ◽  
The Relationship

Impact of wood chip leaching pretreatment on wood chemical composition

TAPPI Journal ◽  
2015 ◽  
Vol 14 (1) ◽  
pp. 9-14
Author(s):  
RICARDO B. SANTOS ◽  
JOSÉ LÍVIO GOMIDE ◽  
PETER W. HART
Keyword(s):  
Chemical Composition ◽  
Chemical Oxygen Demand ◽  
Acid Leaching ◽  
Wood Chip ◽  
Oxygen Demand ◽  
Wood Chips ◽  
Chemical Components ◽  
Acid Pretreatment ◽  
Wood Chemical Composition ◽  
Process Elements

The effect of wood chip acid leaching pretreatment on non-process elements removal and its impact on wood chemical components has been examined. Acid leaching treatments were carried out using two different acid pretreatment approaches: (1) acidified water and (2) filtrate from an acidic bleaching stage. Optimization experiments to identify the most suitable leaching conditions with regard to non-process elements removal and chemical oxygen demand generation were performed. The incorporation of an acid leaching stage significantly reduced the non-process elements content in the wood chips. Carbohydrate content and other wood constituents were not negatively affected by the applied pretreatment.

scholarly journals POTENCIAL DE HÍBRIDOS DE Populusxeuramericana NA OBTENÇÃO DE POLPA CELULÓSICA

FLORESTA ◽  
2002 ◽  
Vol 32 (2) ◽  
Author(s):  
Silvana A. Mariani ◽  
Marco U. Torres
Keyword(s):  
Chemical Composition ◽  
Kraft Pulp ◽  
Kraft Pulping ◽  
Kappa Number ◽  
Lower Percentage ◽  
Southern Chile ◽  
Residual Lignin ◽  
Wood Chemical Composition ◽  
Pinus Spp ◽  
Similar Yield

Três clones de Populusxeuramericana (cv.I-72, cv.I-161 e cv.I-488) cultivados no sul do Chile foram submetidos à análise química e posteriormente a polpações kraft e soda-antraquinona. Estudou-se ainda a influência da umidade dos cavacos sobre a polpação kraft. A composição química entre os três híbridos não apresenta diferenças significativas e a polpação kraft promove o maior rendimento, menor percentagem de rejeitos e menor teor de lignina residual na polpa. O efeito do teor de umidade dos cavacos na polpação kraft exerce influência sobre o rendimento depurado, rejeito e teor de lignina residual na polpa. Um aumento na umidade dos cavacos causa um maior rendimento, menor percentagem de rejeito e menor número Kappa na polpa. Os híbridos estudados possuem um potencial favorável para a obtenção de polpa kraft, segundo os rendimentos e número Kappa similares, obtidos em espécies de Pinus spp e Eucalyptus spp. POTENTIALITY OF HYBRIDS OF Populusxeuramericana FOR CELULOSE PULPING Abstract Three cultivated clones of Populusxeuramericana (cv.I-72, cv.I-161 and cv.I-488) in southern Chile were submitted to chemical analysis and to kraft and soda-antraquinone pulping. It was still studied the influence of the chip moisture on the kraft pulping. There were no significant differences on the wood chemical composition among the three hybrids. Kraft pulping promoted the highest yield on the pulp, the lowest percentage of rejects and the lowest rate of residual lignin on the pulp. The effect of the chip moisture on the kraft pulp influences on the screened yield, percentage of rejects and the rate of residual lignin. An increase on the moisture content of chips reaches a higer yield, lower percentage of reject and lower Kappa number. According to similar yield of pulp and Kappa number reached on Pinus spp and Eucalyptus spp species pulping, the hybrids studied at these experiments own a favorable potential for obtaining kraft pulp.

scholarly journals Wood Chemical Composition in Species of Cactaceae: The Relationship between Lignification and Stem Morphology

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0123919 ◽  
Author(s):  
Jorge Reyes-Rivera ◽  
Gonzalo Canché-Escamilla ◽  
Marcos Soto-Hernández ◽  
Teresa Terrazas
Keyword(s):  
Chemical Composition ◽  
Wood Chemical Composition ◽  
The Relationship
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