Extraction and phase behaviour of Moringa oleifera seed oil using compressed propane

Abstract

This study reports the oil extraction efficiency using Moringa oleifera seed and pressurized propane, new experimental data for phase transition of the binary system {n-propane þ Moringa oleifera oil}, and the profile of fatty acid compositions of the extracted Moringa oil. During the present study, the knowledge of the phase behaviour proved to be of great importance to optimize supercritical extraction using pressurized fluid. This project also compares the classical Soxhlet method including mathematical modelling of kinetic curves of extraction. The extraction experiments were performed in the temperature and pressure ranges of 303-333 K and 2.5-12 MPa, respectively, at a constant flow rate of 1.0 cm 3 /min of n-propane. All the conditions applied during the n-propane extraction process provided similar or higher yields (32.8 to 42.1 %) compared to extractions using n-hexane (42.6 %) and supercritical carbon dioxide (SC-CO 2 ) (37.8 %). In addition, phase transition study for the {Propane (1) þ Moringa ole ıfera oil (2)} system was performed using a variable volume cell and the static synthetic method in a temperature range of 303-343 K, pressures up to 3.23 MPa, and n-propane mass fraction between 0.2 and 0.8. Vapour-liquid (VLE), liquid-liquid (LLE), and vapourliquid-liquid (VLLE) phase transitions were observed at relatively low pressures. The fatty acid profiles of the extracted Moringa oils were evaluated using gas chromatography. They all have very close composition regardless of the solvent used and oleic acid as the major component (%76 %). The Sovov a mathematical model indicated a good fit for all the conditions investigated.

Experimental methods in chemical engineering: Gas chromatography—GC

“… 0.25 mm of cyano-propyl separates fatty acids in Moringa oleifera seeds, which are rich in oleic acid. [98] The contents of soybean oil are also amenable to this method. A Shimadzu Rtx-Wax capillary column (30 m  0.32 mm i. d.  0.25 mm), separates linoleic and oleic acid, as well as linolenic, stearic, and palmitic acids.…”

“…× 0.25 mm of cyano‐propyl separates fatty acids in Moringa oleifera seeds, which are rich in oleic acid. [ 98 ] The contents of soybean oil are also amenable to this method. A Shimadzu Rtx‐Wax capillary column (30 m × 0.32 mm i.d.…”

Optimization Studies and Compositional Oil Analysis of Pequi (Caryocar brasiliense Cambess) Almonds by Supercritical CO2 Extraction

“…The use of carbon dioxide (CO 2 ) eliminates the need for extensive heating while extracting thermolabile chemicals. Numerous studies have reported the extraction of oils and their active components using high-pressure gases (CO 2 and propane) [ 17 , 18 ].…”

Bactericidal and In Vitro Cytotoxicity of Moringa oleifera Seed Extract and Its Elemental Analysis Using Laser-Induced Breakdown Spectroscopy

“…It is a well-known fact that Moringa plants (leaves and fruits) were grown as for skin sanitation, an energy source and also to relieve tension [ 8 , 9 ]. Innumerable reports have discovered that MOL has numerous significant merits, such as antioxidant, antimicrobial, anticancer, anti-inflammatory, antiulcer, antihypertensive, anti-urolithic, anti-asthmatic, antidiabetic, analgesic, anti-aging, diuretic, cardiovascular, hepatoprotective, hypoglycemic and immunomodulatory characteristics [ 10 , 11 , 12 , 13 ]. The hypotensive, antibacterial and anticancer efficacies of the MOL leaves and fruits are due to the presence of sundry distinctive chemical compounds (benzyl glucosinolate, niazimicin, benzyl iso-thiocyanate complexes and pterygospermin) in their structure [ 11 ].…”

“…Nevertheless, all extraction mechanisms experience several restrictions in terms of using a large amount of harmful organic solvents, sample production proceedings and cost [ 13 ]. To get better results, LIBS has emerged as an efficient approach for the identification and quantification of elemental compositions from different medicinal plant extractions.…”