RT info:eu-repo/semantics/conferenceObject
T1 Bioactive compounds extraction from olive leaves by subcritical water extraction
A1 Kashaninejad, Mansoore
A1 Sanz Díez, Mª Teresa
A1 Ramos Rodríguez, Cipriano
A1 Beltrán Calvo, Sagrario
A1 Blanco Alcalde, Beatriz
A1 Alonso Riaño, Patricia
A1 Trigueros Andrés, Ester
K1 Ingeniería química
K1 Chemical engineering
AB Olive leaves (OL) are one of the by-products generated during the pruning of olives tress and during separation process in olive processing. OL are lignocellulosic biomass with important amounts of extractives and lignin (Table 1). OL have a significant amount of phenolic compounds and other bioactive compounds such as mannitol. Mannitol is a sugar alcohol with reduced caloric value compared with other sugars with different applications in the food and pharmaceutical industries due to its functional properties. Mannitol production depends on the sorbitol market since is obtained as a by-product in the catalytic hydrogenation process of sorbitol production. Therefore, alternative process to obtain mannitol from natural sources avoiding the use of high temperatures would be advantageous to obtain this polyol.In this work, valorization of OL was performed by subcritical water extraction in a batch pilot plant with 20 L capacity where 3 kg of the dry OL were put in contact with subcritical water at a medium temperature of 181.1  0.6 ºC. Figures 1 and 2 show the extraction curves of mannitol and some of the main polyphenols compounds identified by HPLC/DAD.By SW treatment, mannitol extraction yield was nearly 100 % after 20 min of extraction (OL has 99  1 mg mannitol/ g dry OL). The main PC extracted by SW was oleuropein nearly 1.5 mg/g dry OL, but also verbascoside and luteolin-7-glucoside. TPC of SW extracts was 33 mg of gallic acid equivalent/g dry OL.
YR 2021
FD 2021
LK http://hdl.handle.net/10259/5855
UL http://hdl.handle.net/10259/5855
LA eng
NO Póster presentado en: 18th European Meeting on Supercritical Fluids. 2021, 4-6 de mayo, Burdeos (online)
NO JCyL and ERDF for financial support of projects BU301P18 and BU050P20 and to Agencia Estatal de Investigación for project funding PID2019-104950RB-I00/AEI/10.13039/501100011033. To the company Hiperbaric through project BIOLIGNO (10/16/BU/0017), funded by ERDF and JCyL through ICE. To JCyL and ESF for E. Trigueros and P. Alonso-Riaño predoctoral contracts and for the contracts of D. Benito-Bedoya and D.M. Aymara-Caiza trough the YEI program.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024