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2216287 
Journal Article 
Supercritical fluid extraction and characterisation of Moringa oleifera leaves oil 
Zhao, S; Zhang, D 
2013 
1 
Separation and Purification Technology
ISSN: 1383-5866 
ELSEVIER SCIENCE BV 
AMSTERDAM 
118 
497-502 
English 
WOS:000326994500059 
This work was aimed to extract and characterise the Moringa oleifera leaves oils using supercritical fluid extraction (SFE) and to compare the results against those obtained using the conventional Soxhlet extraction method. The oils extracted were analysed using GC-MS. The compounds were identified according to their retention indices and mass spectra (EI, 70 eV). The effects of pressure (30 MPa, 40 MPa, 50 MPa), temperature (40 degrees C, 60 degrees C, 80 degrees C) and extraction time (60 min, 90 min and 120 min) on the oil yield were investigated using a three-level orthogonal array design. The experimental results showed that while the oil yield increased with increasing any of the three parameters, temperature had the most significant effect. The highest yield of 6.34% was obtained under the condition of pressure 50 MPa, temperature 60 degrees C and an extraction time of 120 min. The Soxhlet extraction was performed at 78 degrees C for 8 h using hexane as the solvent. A total of 42 compounds were identified in the Soxhlet extracted oil while only 12 compounds were detected in the SFE extracted oil. Some compounds that were found in the Soxhlet extracts were not detected in the SFE samples. This is because the supercritical fluid extraction is more selective than the Soxhlet extraction method. The compositions of the oil extracted by SFE under the different conditions examined were mostly similar and the major compounds identified were 1,2-Benzenedicarboxylic acid, mono (2-ethylhexyl) ester, nonacosane, heptacosane, beta-Amyrin, although their quantities differed. (C) 2013 Elsevier B.V. All rights reserved. 
Carbon dioxide; Essential oil; Moringa oleifera; Soxhlet extraction; Supercritical fluid extraction 
IRIS
• Diisononyl Phthalate (DINP)
     Literature Search
          DINP Jan 2014 update
               Web of Science
     Excluded: No Primary Data on Health Effects
          Not chemical specific