Title:
High Xylitol Yield Directly from Fresh Corncob: the One-pot Approach
Author(s):
Delgado-Arcaņo, Y., Valmaņa-García, O., Mandelli, D., Carvalho, W., Pontes, L.A.
Document(s):
Paper
Poster
Abstract:
Xylitol is one of the platform molecules with a high value-added obtained from the xylose contained in biomass. The present work aimed to obtain xylitol from fresh corncob through a one-pot approach. The two fundamental reactions of the process, namely hydrolysis and hydrogenation, were previously evaluated separately: hydrolysis conditions were refined using a central composite rotational design, yielding 92% xylose under mild conditions (140.°C, 1.3% H2SO4, 5.min), while hydrogenation achieved 98% xylitol yield from pure xylose using 5%Ru/C catalyst at 140.°C and 2 MPa for 3.hours. The final one-pot process combined these optimized conditions, in which as xylose was being released from the hemicellulose fraction, it selectively transformed into xylitol, resulting in a 71% xylitol yield from raw corncob using 0.5% H2SO4 at 140.°C and 2.MPa. These results demonstrate that the one-pot, on a laboratory scale, allows obtaining a high yield of xylitol from fresh corncob under mild conditions.
Keywords:
biomass, biorefining, catalytic conversion, optimization, platform molecules
Topic:
Biomass Conversion to Biomaterials and Chemicals
Subtopic:
Platforms for bio-based chemicals and polymers
Event:
33rd European Biomass Conference and Exhibition
Session:
6CV.9.17
Pages:
1195 - 1199
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-6CV.9.17
Price:
FREE
