Production of xylooligosaccharides by autohydrolysis of lignocellulosic materials

Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries

“…The fitting results are presented in Table 3, and the correspondence between experimental and calculated concentration values are presented in Figure 3a and b. The proportion of reactive xylan under the tested conditions (measured by the "susceptible fraction" α), was 0.88 g g -1 , close to the results reported by Parajó et al (2004) for Eucalyptus wood (0.855 g g -1 ) and corn cobs (0.865 g g -1 ), and by Yáñez et al (2009) for Acacia dealbata (0.875 g g -1 ).…”

“…The activation energies and the preexponential factors were near the ones reported for Eucalyptus globulus by Parajó et al (2004). Arabinan shows a comparatively high susceptibility to hydrolysis leading to total conversion under harsh conditions.…”

“…Additional F generation from XOl L and F consumption by reaction with xylose had to be included in the model for improved fitting. As previously described by Parajó et al (2004) and Kumar and Wyman (2008), XOl L can be directly converted to F in hydrothermal processes in high yields, whereas reactions between F and either …”

Purification of cellulosic pulp by hot water extraction

“…Hemicellulosic mono-and oligosaccharides are valuable compounds that could be converted into films, fuels or food additives, among others (Girio et al 2010;Hansen and Plackett 2008;Parajó et al 2004). Acidic post-hydrolysis of pulp has been suggested as a method to extract the residual hemicelluloses and convert the extracted monosaccharides into chemical building blocks (Heikkilä et al 2004), or alternatively, as a method to hydrolyze the cellulosic pulp and produce microcrystalline cellulose (Dahl et al 2011).…”

Effect of acid hydrolysis and fungal biotreatment on agro-industrial wastes for obtainment of free sugars for bioethanol production

“…Ash per se is a drawback for ethanol production, when mineral components have neutralizing ability, which could increase the pH during acid hydrolysis, and higher temperatures or longer time would be required to achieve the desired hydrolyzing effect (32). Sugar beet waste recorded the highest total sugars and nitrogen contents (0.83 % and 1.84 % (w/w), respectively).…”