RT info:eu-repo/semantics/article
T1 Biorefinery approach for the development of an integrated extraction and purification process for the recovery of pectin derived compounds and flavonoids from onion peels
A1 Benito Román, Oscar
A1 Ruiz Pérez, María Olga
A1 Sanz Díez, Mª Teresa
A1 Beltrán Calvo, Sagrario
K1 Subcritical water extraction
K1 Diafiltration
K1 Membrane
K1 Biorefinery
K1 Oligosaccharides
K1 Ingeniería química
K1 Chemical engineering
K1 Alimentos
K1 Food
AB This work aims the valorisation of onion peels by recovering high added value compounds (flavonoids and pectin derived compounds (PDC)) in a three stages water-based cascade process, using subcritical water (SubW) hydrolysis and diafiltration using ceramic tubular membranes. After quercetin and derivatives were recovered in a hydroalcoholic extraction process, the onion peels were subjected to a SubW process that yielded three different hydrolysates (severity factors in the range 2.88–3.29). These hydrolysates resulted to be complex multicomponent mixtures with variable shares of partially hydrolysed PDC, degradation products (HMF, furfural, organic acids) and free monosaccharides. The 50 kDa membrane effectively removed more than 98 % of the impurities present in the hydrolysates after a dilution volume of 3.5. In order to mitigate the observed membrane fouling, a pre-treatment step via centrifugation was used to remove colloidal matter besides colour which allowed the use of the 5 kDa membrane to obtain a retentate that contained over 80 % of the initial PDC with a final purity of 82 % after a dilution volume of only 2.0.
PB Elsevier
SN 2213-3437
YR 2024
FD 2024-12
LK http://hdl.handle.net/10259/9816
UL http://hdl.handle.net/10259/9816
LA eng
NO 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 and TED2021–129311B-I00.
DS Repositorio Institucional de la Universidad de Burgos
RD 22-dic-2024