Health & Environmental Research Online (HERO)


Print Feedback Export to File
1619124 
Journal Article 
Studies on alternative solvents for the extraction of peanut oil 
Gandh, AP; Joshi, KC; Krishna, J; Parihar, VS; Srivastav, DC; Raghunadh, P; Kawalkar, J; Jain, SK; Tripathi, RN 
2005 
Yes 
Journal of Food Science and Technology
ISSN: 0022-1155 
ASSN FOOD SCIENT TECHN INDIA 
MYSORE 
42 
4 
352-355 
English 
WOS:000231815100017 
The possibility of using some alternative solvents like n propanol, isopropyl alcohol, ethanol and n-heptane instead of n-hexane for the extraction of
peanut oil was explored. Peanut oil was soluble in all these solvents and the solubility
increased with the increasing temperature of extraction which varied with the nature of the
solvents used. All these solvents were equally effective in extracting the oil from peanuts and
took 8 h to get maximum oil extraction. Similar results were obtained with different azeotropes
used. The crude oil and the refined oil from the azeotropic extractions revealed that the
isopropyl alcohol and water extractions contained less phosphorus (11 ppm) and free fatty acids
(0.7%) as compared to others. The desolventised meal from the same extractions contained low
solvent residues and 42% protein. 
peanut; solubility; oil extraction; quality; absolute solvents; azeotropes; residual solvents