RT info:eu-repo/semantics/article
T1 Maximizing the freeze-dried extract yield by considering the solvent retention index: extraction kinetics and characterization of Moringa oleifera leaves extracts
A1 Kashaninejad, Mansoore
A1 Blanco Alcalde, Beatriz
A1 Benito Román, Oscar
A1 Beltrán Calvo, Sagrario
A1 Niknam, S. Mehdi
A1 Sanz Díez, Mª Teresa
K1 Moringa leaves
K1 Phenolic compounds
K1 Solvent retention
K1 Kinetic model
K1 Freeze-dried extracta
K1 Ingeniería química
K1 Chemical engineering
AB A complete chemical characterization of Moringa oleifera leaves was carried out showing a high content of extractives. Extraction kinetics of bioactive compounds present in this fraction were performed by conventional and ultrasound assisted extraction (UAE). A 50% (v/v) hydroalcoholic mixture led to the highest total phenolic compounds yield by conventional solvent extraction, 29.5 ± 0.3 mg per gram of moringa leaves. UAE did not bring any improvement when using hydroalcoholic mixtures probably due to the physical properties of the ethanol aqueous mixtures that affect the UAE performance, such as viscosity and vapor pressure of the mixture. The retention index of the different solvents in the raffinate phase was determined revealing the highest retention index for water, 9.5, and a continuous decrease by increasing ethanol concentration. Retention index is a key parameter in a solvent extraction process since it determines the number of stages in an industrial separation process and it is not usually reported in bioactive compounds extraction. Solvent extraction capacity and the retention index determined the final freeze-dried extract yield.
PB Elsevier
SN 0960-3085
YR 2021
FD 2021-11
LK http://hdl.handle.net/10259/6094
UL http://hdl.handle.net/10259/6094
LA eng
NO Junta de Castilla y León (JCyL) and the European Regional Development Fund (ERDF) [grantnumbers BU301P18 and BU050P20]; and the Agencia Estatalde Investigación [grant number AEI/10.13039/501100011033].
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024