RT info:eu-repo/semantics/article
T1 Extraction of ferulic acid and feruloylated arabinoxylo-oligosaccharides from wheat bran using pressurized hot water
A1 Pazo Cepeda, María Victoria
A1 Aspromonte, Soledad Guadalupe
A1 Alonso Sánchez, Gloria Esther
K1 Ferulic acid
K1 Ácido ferúlico
K1 Wheat bran
K1 Salvado de trigo
K1 Arabinoxylan
K1 Arabinoxilano
K1 Microwaves
K1 Microondas
AB Pressurized water was tested as solvent for the hydrolysis and extraction of Ferulic acid (FA) and feruloylated arabinoxylooligosaccharides (F-AXOS) from destarched wheat bran (DWB). Results were dependent on the severity factor of the process (combination of temperature and time), obtaining the maximum extraction yields at 200°C and 3.5 min. 78% of the total FA was successfully extracted, being 17% in its free form and the rest, covalent ester-bounded to arabinoxylans. Under such conditions, 80% of the arabinoxylans are extracted with a degree of FA esterification of 1.34 g FA/100 g AXOS, and an average molecular weight of 1,3·104 Da. Pressurized Microwave Assisted Extraction was also studied to evaluate potential intensification of the process using microwaves. However, no significant differences were observed with the microwave heating. Residual solid after extraction was mainly composed by lignin and cellulose (56% and 21%, respectively) showing that hot compressed water technology can be integrated in the first steps of a biorefinery for the total valorization of the wheat bran.
PB Elsevier
SN 2212-4292
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/49058
UL https://uvadoc.uva.es/handle/10324/49058
LA eng
NO Food Bioscience, 2021, vol. 44, part A, 101374
NO Producción Científica
DS UVaDOC
RD 18-abr-2024