RT info:eu-repo/semantics/article
T1 Hydrothermal production of high-molecular weight hemicellulose-pectin, free sugars and residual cellulose pulp from discarded carrots
A1 Ramos-Andrés, Marta
A1 Aguilera-Torre, Beatriz
A1 García-Serna, Juan
K1 Arabinogalactano, Homogalacturonano, Biorrefinería, Pulpa de zanahoria, Autohidrólisis, Peso molecular
AB Discarded carrots account for 30% of the total production ending up in landfills, land, or a small part ascattle food. Valorization of discarded carrot pulp was studied by hydrothermal treatment, fractionatingfree sugars, hemicellulose and pectin in the liquid phase and residual pulp in the solid phase. Extractiontook place in flow-through mode at 140, 160 and 180  C, achieving recoveries up to 211.0 g/kg dry pulp offree sugars, 29.13 g/kg dry pulp of homogalacturonan pectin, and 70.45 g/kg dry pulp of arabinogalactanhemicellulose. The residual pulp reached a cellulose content of 57.5 wt% while before the treatment itwas 10.7 wt%. Most of the free sugars were extracted in the preheating stage in batch, so they could beobtained separately from the biopolymers. The flow-through extraction allowed to obtain hemicelluloseand pectin of molecular weights >30 kDa. The evolution of different ranges of molecular weight wasstudied in detail for a better understanding of the phenomenon of autohydrolysis and the link betweenhemicellulose and pectin. The ample molecular weight distribution in the hydrolyzate allows for asubsequent fractionation via ultrafiltration membranes, to obtain a high molecular weight fraction forapplications such as film-forming (in combination with the residual pulp).
SN 0959-6526
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/82379
UL https://uvadoc.uva.es/handle/10324/82379
LA eng
NO Journal of Cleaner Production, 2021, vol. 290, 125179
NO Producción Científica
DS UVaDOC
RD 31-ene-2026