Fermentation of C6 carbohydrates from triticale straw hemicellulosic fraction as pretreatment for xylose purification

Beauchet, Romain; Berberi, Véronique; Corcos, Pierre-Olivier; Guimont-Montpetit, Gabriel; Dion, Yves; Eudes, François; Lavoie, Jean‐Michel

doi:10.1016/j.indcrop.2013.08.070

Cited by 9 publications

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“…The triticale straw used in this work were the same as the one characterized by Beauchet et al ( 2013 ) in their study and were found to contain 12.4 wt% extractives, 31.7 wt% hemicelluloses, 34.0 wt% cellulose, 17.0 wt% lignin, and 4.7 wt% ashes. Moreover, the dual steam treatments enabled recovering 94% of the cellulosic fraction, which had a 60–65% humidity content and consisted of about 7 wt% lignin and 90 wt% glucose (found as glucan chains) on a dry basis.…”

Section: Resultsmentioning

confidence: 97%

Two-Step Thermochemical Cellulose Hydrolysis With Partial Neutralization for Glucose Production

et al. 2018

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Cellulose hydrolysis processes using concentrated acid usually involve two steps in order to obtain high glucose yields. The first step (pre-treatment) decrystallizes cellulose while the second step (post-hydrolysis) converts the amorphous cellulose to glucose. The two-step process developed by the Industrial Research Chair on Cellulosic Ethanol and Biocommodities and its industrial partner CRB Innovations Inc., includes an intermediate partial neutralization step, whose purpose is to decrease the amount of dilution water to be added for post-hydrolysis thus minimizing handling costs. In this work, the effect of several operating parameters on the glucose yield of this process was investigated using triticale cellulose and the best conditions yielding fermentable glucose (close to 100%) were determined. These conditions involve pre-treating cellulose at 30°C using 72 wt% H2SO4 with a H2SO4/dry cellulose mass ratio of 36 over 2 h, followed by a partial neutralization using 20 wt% NaOH at an H+/OH− molar ratio of 2.3–2.5 and a post-hydrolysis at 121°C for 10 min.HIGHLIGHTS Influence of operating parameters on the glucose yield have been investigated.Conditions for producing cellulosic glucose with yields close to 100% have been identified.

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Section: Resultsmentioning

confidence: 97%