2026-09-21T12:31:28Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/60842024-04-16T12:31:41Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245
Repositorio Institucional de la Universidad de Burgos
author
Niknam, S. Mehdi
author
Kashaninejad, Mansoore
author
Escudero Barbero, Isabel
author
Sanz Díez, Mª Teresa
author
Beltrán Calvo, Sagrario
author
Benito Moreno, José Manuel
2021-10-27T12:56:55Z
2021-10-27T12:56:55Z
2021-09
0959-6526
http://hdl.handle.net/10259/6084
10.1016/j.jclepro.2021.128340
Olive pomace, a solid residue generated during olive oil production process and a rich source of phenolic
compounds, was dried and defatted to obtain a pomace oil rich in monounsaturated fatty acids with 64% oleic
acid. The defatted pomace was further treated by ultrasound-assisted extraction (UAE). The optimal phenol
extraction conditions of 10 min, 40% amplitude and 4% (w/v) solid:solvent ratio, yielded to 14.70 mg/g total
phenols, 2.48 mg/g total flavonoids and 0.924 mmol Trolox/g antioxidant activity. In order to purify valuable
biophenols, two polymeric resins (XAD4 and XAD16) and two activated charcoals (NPAC and GAC) were tested
as adsorbents using a magnetic stirrer and an incubator shaker. XAD16 (100 g/L) in magnetic stirrer showed the
optimal adsorption ratios with 74.36%, 39.25%, 68.79% and 100% for total phenols, hydroxytyrosol, tyrosol and
oleuropein, respectively. Desorption using acidified 50% (v/v) ethanol-water at pH = 2.3 proved 57.65% recovery
of total phenols, 19.27% of hydroxytyrosol and 45.73% of tyrosol. These results indicate that extraction
and selective purification of biophenols from olive pomace can be achieved by the proposed UAE using 50% v/v
ethanol-water as solvent, followed by adsorption-desorption stages with the XAD16 polymeric resin.
eng
Atribución 4.0 Internacional
Olive pomace
Ultrasound-assisted extraction
Response surface methodology
Phenolics adsorption-desorption
Valorization of olive mill solid residue through ultrasound-assisted extraction and phenolics recovery by adsorption process
info:eu-repo/semantics/article
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