2026-07-09T21:50:23Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/92942024-06-21T00:05:31Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Benito Román, Oscar Sanz Díez, Mª Teresa Beltrán Calvo, Sagrario 2024-06-20T07:58:51Z 2024-06-20T07:58:51Z 2024-04 0896-8446 http://hdl.handle.net/10259/9294 10.1016/j.supflu.2023.106155 The degradation kinetics of Galacturonic Acid (GalA) in subcritical water (SubW) was studied in a batch reactor. GalA degradation was faster than other monosaccharides and could be described by the first order kinetic model. The initial concentration of GalA did not affect the degradation kinetics, but the heating rate and the reaction temperature played an important role in the degradation of GalA. The energy of activation was calculated according to the Arrhenius equation and resulted to be 97 ± 3 kJ/mol. Degradation products formation, mainly formic acid and furfural, was faster with temperature until a maximum concentration was reached (0.2 g C in formic acid/g C in initial GalA at 155°C and 45 min, severity factor 3.2), followed by a fast degradation whereas a plateau concentration was reached in the case of furfural (around 0.16 g C /g C in initial GalA at 185 °C after 45 min). This work was supported by the Agencia Estatal de Investigación (AEI) though projects PID2020-116716RJ-I00/AEI/10.13039/501100011033, PID2019-104950RB-I00/AEI/10.13039/501100011033; by AEI, MICINN, UE Next GenerationEU (Plan de Recuperación, Transformación y Resiliencia) [grant number TED2021-129311B-I00] and by the Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) through project BU050P20. Benito-Román post-doctoral contract was funded by AEI through project PID2020-116716RJ-I00. application/pdf eng Elsevier The Journal of Supercritical Fluids. 2024, V. 206, 106155 https://doi.org/10.1016/j.supflu.2023.106155 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Galacturonic acid Subcritical water Hydrolysis Kinetics Biomass Ingeniería química Chemical engineering Studies of degradation of pectin derived compounds from onion skins in subcritical water info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion The Journal of Supercritical Fluids 206