Background: The valorization of orange peel waste (OPW) through the
extraction of bioactive compounds is a clear example of the circular economy. OPW
contains many value-added compounds, among which bioactive phenolic compounds
(flavonoids and phenolic acids) could be extracted and used for industrial
applications, such as pharmaceuticals or cosmetics. Methods: In this
work, the extraction of phenolic compounds from orange peel was carried out by
conventional (orbital shaker) and assisted (ultrasound and microwave) extraction
techniques using deionized water, 80% (v/v) ethanol in water, and ethyl acetate
as solvents. The effect of temperature, extraction time, and type of technique
was evaluated and discussed following spectrophotometric (total phenolic content
and total flavonoid content) and high-performance liquid chromatography (HPLC)
analyses of the extracts. Results: The most effective extraction in
terms of efficiency was achieved by microwave-assisted extraction using 80%
(v/v) ethanol in water as the extraction solvent, at 373 K for 6 min, which
obtained 7.2
Announcements
Open Access
Original Research
Recovery of Phenolic Compounds from Orange Peel Waste by Conventional and Assisted Extraction Techniques Using Sustainable Solvents
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1
Dpto. Ingeniería Química Industrial y del Medio Ambiente, ETSI Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain
2
Advanced Biofuels and Bioproducts Unit, Department of Energy, CIEMAT, 28040 Madrid, Spain
*Correspondence: ej.gonzalez@upm.es (Emilio J. González)
Front. Biosci. (Elite Ed) 2023, 15(4), 30;
https://doi.org/10.31083/j.fbe1504030
Submitted: 22 September 2023 | Revised: 8 November 2023 | Accepted: 16 November 2023 | Published: 12 December 2023
Copyright: © 2023 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license.
Abstract
Keywords
natural phenolic compounds
assisted extraction
sustainable solvents
orange waste valorization
hesperidin
Funding
SUSTEC P2018/EMT- 4348/Comunidad Autónoma de Madrid (Spain)
PEJ-2020-AI/AMB-18391/Comunidad Autónoma de Madrid (Spain)
PEJ-2021-TL/AMB-21722/Comunidad Autónoma de Madrid (Spain)
Madrid Government
Figures
Fig. 1.