Lignocellulose wastes are the most abundant residues on surface of earth. This project studies possibility ethanol production from a forestry waste. Wood Gmelina arborea were treated with dillute sulfuric acid to break down lignin component. Fermentation for was done using baker’s yeast (Saccharomyces cerevisiae ATCC 204508/S288c) 120 hours submerged fermentation, and pH, reducing sugar, specif...

[Introducción]: Gmelina arborea se ha consolidado como la segunda especie más utilizada en reforestación comercial Costa Rica. [Objetivo]: Evaluar el comportamiento de clones G. condiciones suelo ácidos. [Metodología]: Se utilizó un diseño experimental bloques completos al azar, con 6 repeticiones, 29 y 5 testigos, distanciamiento 4 x m. realizó análisis del calcularon parámetros genéticos a di...

Lignin, an amorphous biopolymer is one of the major components wood. In this study, lignin was extracted from Gmelina arborea wood using Soda and Kraft pulping processes. The characterized Fourier Transformed Infrared Spectrometer (FTIR), UV/visible spectrometer, electrospray ionization mass spectrometer scanning electron microscope (SEM). Results revealed that G. lignins contained several chem...