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Fractionation of eucalyptus globulus wood by glycerol-water pretreatment : opti...
Romaní, Aloia; Ruíz, Héctor A.; Pereira, Francisco B.; Domingues, Lucília; Teixeira, J. A.A glycerol-organosolv process can be a good alternative for Eucalyptus wood fractionation into its main compounds, improving the enzymatic saccharification of the cellulose. A study of process variables - glycerol−water percent content, temperature, and process time - was carried out using a Box-Behnken experimental design. The cellulose obtained from pretreated solids was recovered almost quantitatively, leadi...
Characterization and evaluation of antifungal activity in vitro of Aloe vera fr...
Flores-López, M. L.; Cerqueira, M. A.; Romaní, Aloia; Rodríguez, Diana Jasso de; Vicente, A. A.Aloe vera leaves can be separated in a liquid fraction (exudate) and a mucilaginous pulp (gel). Recently, the antifungal activity of their components has been reported. The common technique for gel extraction from A. vera leaves are the traditional manual (in this case the liquid fraction is not separated) and a mechanical methods. Moreover, as a result of its processing the bagasse is obtained. The aim of this...
Ethanol production from fractionated eucalyptus wood
Romaní, Aloia; Rodríguez-López, Julio; González-Muñoz, María Jesús; Garrote, Gil; Parajó, Juan CarlosEucalyptus globulus wood (EGW) is a lignocellulosic material with high cellulose and hemicellulose content, suitable for the simultaneous production of hemicellulosic and cellulosic ethanol. Processing of EGW by autohydrolysis yields a liquid phase rich in hemicellulosic-derived compounds (13.73 kg of xylooligosaccharides/ 100 kg of raw material). The liquid phase was processed by membranes, achieving a concent...
Effect of hemicellulose liquid phase on the enzymatic hydrolysis of autohydroly...
Romaní, Aloia; Ruíz, Héctor A.; Pereira, Francisco B.; Domingues, Lucília; Teixeira, J. A.In this work, Eucalyptus globulus wood (EGW) was pretreated under autohydrolysis process at 210 and 220 ºC, obtaining a pretreated solid with high cellulose content. Moreover, the effect of the hemicellulosic liquid phase (HLP) addition on the enzymatic hydrolysis was studied. When the enzymatic hydrolysis was performed without addition of HLP, 87.38 and 107.46 g/L of glucose was obtained for 210 ºC and 220 ºC,...
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