Results 11 to 20 of about 54 (47)
Steam explosion of two hardwood species was carried out with and without addition of sulfuric acid (H2SO4 0.5%, p/v) as a pretreatment catalyst. In general, wood chips of Eucalyptus viminalis Labill were shown to be more amenable to pretreatment than ...
L. P. Ramos +3 more
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Chemical characteristics and Kraft pulping of tension wood from Eucalyptus globulus labill
Tension (TW) and opposite wood (OW) of Eucalyptus globulus trees were analyzed for its chemical characteristics and Kraft pulp production. Lignin content was 16% lower and contained 32% more syringyl units in TW than in OW. The increase in syringyl units
María Graciela Aguayo +4 more
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A espectroscopia no infravermelho próximo (NIRS) surge no campo das ciências florestais como método não destrutivo, rápido e preciso capaz de predizer propriedades tecnológicas da madeira.
Lívia Cássia Viana +4 more
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Caracterização do Engaço da Uva e Avaliação do seu Potencial como Matéria‐Prima Lenhocelulósica
O presente estudo avalia a composição química detalhada do engaço da uva de modo a encontrar novas formas para a sua valorização. O engaço da uva é um subproduto vinícola de origem lenhocelulósica, com 30-31% de celulose, 21% de hemicelulose, 17-18% de ...
Sónia Prozil +3 more
doaj
Hemicellulose consists of non-cellulosic polysaccharides, with xylans and mannans as their main examples. In nature, xylan can be first degraded to xylooligosaccharides and finally to xylose by certain microorganisms.
Cristiano Ragagnin de Menezes +5 more
doaj
Tension (TW) and opposite wood (OW) of Eucalyptus globulus trees were analyzed for its chemical characteristics and Kraft pulp production. Lignin content was 16% lower and contained 32% more syringyl units in TW than in OW. The increase in syringyl units
María Graciela Aguayo +4 more
doaj
Extração de xilana do bagaço de cana-de-açúcar microbiologicamente pré-tratado
Pós-graduação em Ciências Biológicas (Microbiologia Aplicada ...
openaire +1 more source
Processo integrado para produção de xilana, briquetes e açúcares fermentáveis
Lignocellulosic biomass constitutes an enormous potential in the generation of energy and added-value molecules, in addition to directing its use and reducing inappropriate disposal. An integrated process can collaborate for a better use of this material.
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Análise de propriedades de superfície de xilanas modificadas
Xylans belong to the group of hemicelluloses and are the second most abundant biopolymer in the world, since they incorporate the cell walls of plant cells. They represent a large fraction in various types of agricultural base material, integrating about 20-35% and 5- 15% of the hemicelluloses present in hardwoods and softwoods, respectively.
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