Screening of Solvents for Deacidification of Sardine Oil

  • Chandrasekar VaisaliEmail author
  • Belur D. Prasanna
  • I. Regupathi
Conference paper


The need for softer processing of fish oil has become one of the major concerns in the refining industry. The deacidification efficiency of sardine oil/solvent mixture with different solvents was studied. Four solvents methanol, ethanol, propanol and acetonitrile were tested for their ability to deacidify sardine oil. At an oil/solvent ratio of 1:2, maximum reduction in free fatty acids (FFA) of 32.08, 30.8, 23.3 and 10.94 % was noted for methanol, ethanol, propanol and acetonitrile respectively. The influence of various solvent ratios, and their effects on the oil loss were also studied. The efficiency in deacidification was also characterised by the solvent traces in oil and reduced oil loss. Of all the tested solvents, methanol gave the highest reduction in the FFA levels while acetonitrile gave the lowest reduction in FFA.


Sardine oil Deacidification Solvents 


  1. AOCS: Official Methods and Recommended Practices of the AOCS. AOCS Methods For Biodiesel Feedstock Quality Analytical Guidelines for Assessing Feedstock to Ensure Biodiesel Quality (2009)Google Scholar
  2. Bhosle, B.M., Subramanian, R.: New approaches in deacidification of edible oils—a review. J. Food Eng. 69, 481–494 (2005)CrossRefGoogle Scholar
  3. Bollmann, H.: Process for the removal of free fatty acids, resins, bitter and mucilaginous substances from fats and oils. US Patent US 1371342 (1921)Google Scholar
  4. Calvo, B., Cepeda, E.A.: Solubilities of stearic acid in organic solvents and in azeotropic solvent mixtures. J. Chem. Eng. Data 53, 628–633 (2008)CrossRefGoogle Scholar
  5. Calvo, B., Collado, I., Cepeda, E.A.: Solubilities of palmitic acid in pure solvents and its mixtures. J. Chem. Eng. Data 54, 64–68 (2009)CrossRefGoogle Scholar
  6. De, B.K., Bhattacharyya, D.K.: Deacidification of high acid rice bran oil by re esterification with monoglycerides. J. Am. Oil Chem. Soc. 76, 1243–1246 (1999)CrossRefGoogle Scholar
  7. Kale, V., Katikaneni, S.P.R., Cheryan, M.: Deacidifying rice bran oil by solvent extraction and membrnae technology. J. Am. Oil Chem. Soc. 76, 723–727 (1999)CrossRefGoogle Scholar
  8. Kolb, D.K., Brown, J.B.: Low temperature solubilities of fatty acids in selected organic media. J. Am. Oil Chem. Soc. 32, 357–362 (1955)Google Scholar
  9. Rodrigues, C.E.C., Goncalves, C.B., Batsta, E., Meirelles, A.J.A.: Deacidification of vegetable oils by solvent extraction. Recent Pat. Eng. 1, 95–102 (2007)CrossRefGoogle Scholar
  10. Rodrigues, C.E.C., Gonclaves, C.B., Marcon, E.C., Batista, E.A.C.: Deacidification of rice bran oil by liquid-liquid extraction using a renewable solvent. Sep. Purif. Technol. 132, 84–92 (2014)CrossRefGoogle Scholar
  11. Rubio-Rodríguez, N., Beltran, S., Jaime, I., Diego, S.M., Sanz, M.T., Carballido, J.R.: Production of omega-3 polyunsaturated fatty acid concentrates: a review. Innovative Food Sci. Emerg. Technol. 11, 1–12 (2010)CrossRefGoogle Scholar
  12. Swaboda, P.A.T.: Refining of palm oils. United Kingdom Patent GB 2144143 (1984)Google Scholar
  13. Vaisali, C., Charanyaa, S., Belur, P.D., Regupati, I.: Refining of edible oils: a critical appraisal of current and potential technologies. Int. J. Food Sci. Technol. 50, 13–23 (2015)CrossRefGoogle Scholar
  14. Wang, T., Johnson, L.A.: Refining high-free fatty acid wheat germ oil. J. Am. Oil Chem. Soc. 78, 71–76 (2001)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Singapore 2016

Authors and Affiliations

  • Chandrasekar Vaisali
    • 1
    Email author
  • Belur D. Prasanna
    • 1
  • I. Regupathi
    • 1
  1. 1.Department of Chemical EngineeringNITKSurathkalIndia

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