5 documents found, page 1 of 1
Restructuring the processes for furfural and xylose production from sugarcane b...
Mesa, Leyanis; Morales, Marlen; González, Erenio; Cara, Cristóbal; Romero, Immaculada; Castro, Eulogio; Mussatto, Solange I.This study consisted in restructuring the processes for furfural and xylose production from sugarcane bagasse in a biorefinery concept for the residues utilization on ethanol production. The dilute acid hydrolysis conditions for furfural or xylose production were firstly established on laboratory scale and then reproduced on a 10-L bench reactor fed with direct steam. The furfural production was maximum when us...
Production, purification and characterisation of oligosaccharides from olive tr...
Cara, Cristóbal; Ruiz, Encarnación; Carvalheiro, Florbela; Moura, Patrícia; Ballesteros, Ignacio; Castro, Eulogio; Gírio, FranciscoThe production of oligosaccharides (OS) by olive tree pruning autohydrolysis in the range 170–230 °C was studied. The best results in terms of maximum yield of OS along with a low amount of byproducts were obtained at 180 °C. After purification by preparative gel filtration chromatography a range of OS-fractions with average degree of polymerisation (DP) from 25 to 3 was selected for further characterisation. G...
Production, purification and characterisation of oligosaccharides from olive tr...
Cara, Cristóbal; Ruiz, Encarnación; Carvalheiro, Florbela; Moura, Patrícia; Ballesteros, Ignacio; Castro, Eulogio; Gírio, FranciscoThe production of oligosaccharides (OS) by olive tree pruning autohydrolysis in the range 170–230 °C was studied. The best results in terms of maximum yield of OS along with a low amount of byproducts were obtained at 180 °C. After purification by preparative gel filtration chromatography a range of OS-fractions with average degree of polymerisation (DP) from 25 to 3 was selected for further characterisation. G...
The effect of organosolv pretreatment variables on enzymatic hydrolysis of suga...
Mesa, Leyanis; González, Erenio; Cara, Cristóbal; González, M.; Castro, E.; Mussatto, Solange I.Sugarcane bagasse pretreated with dilute-acid was submitted to an organosolv ethanol process with NaOH under different operational conditions (pretreatment time, temperature, and ethanol concentration) aiming to maximize the glucose yield in the subsequent enzymatic hydrolysis stage. The different pretreatment conditions resulted in variations in the chemical composition of the solid residue as well as in the g...
An approach to optimization of enzymatic hydrolysis from sugarcane bagasse base...
Mesa, Leyanis; González, Erenio; Cara, Cristóbal; Ruiz, Encarnación; Castro, Eulogio; Mussatto, Solange I.The organosolv pretreatment followed by enzymatic hydrolysis of the pretreated material and subsequent fermentation of the hydrolysate produced, was the strategy used for ethanol production from sugarcane bagasse. The effect of different operational variables affecting the pretreatment (the catalyst type and its concentration, and the pretreatment time) and enzymatic hydrolysis stage (substrate concentration, c...