%0 Journal Article 
%A Montes Herrera, Antonio
%A Valor López, Diego
%A Pereyra López, Clara María
%A Martínez de la Ossa Fernández, Enrique José
%T Generation of Spherical Microparticles of Moringa Leaves through a Supercritical Antisolvent Extraction Process
%D 2023
%@ 2673-4079
%U http://hdl.handle.net/10498/33549
%X The objective of this work was evaluation of the supercritical antisolvent extraction (SAE)
process to generate microparticles with antioxidant activity from Moringa leaves. A biodegradable
polymer was used as an inductor of particle precipitation. An ethanolic extract of 25 mg/mL was used
in the SAE process, during which the influences of pressure (100–200 bar), temperature (35–55  C)
and extract–polymer ratio (0.11–0.33) on particle size and antioxidant activity were evaluated. An
extract flow rate of 3 mL/min, a supercritical CO2 (scCO2) flow rate of 30 g CO2/min and a nozzle
diameter of 100  m were kept constant. The identification of several compounds of Moringa leaves,
namely, coumaric acid and quercetin 3D glucoside, were determined with ultra-performance liquid
chromatography coupled with mass spectrometry. The antioxidant activity of the extract and the precipitates
was measured with 2,2-Diphenyl-1-picrylhydrazyl. Spherical microparticles with diameters
in the range of 2–5  m were obtained, with moderate antioxidant activity.
%K supercritical antisolvent
%K Moringa leaves
%K antioxidants
%K extraction
%K particle size
%~ Universidad de Cádiz