African Journal of Agriculture and Food Security

African Journal of Agriculture and Food Security ISSN 2375-1177 Vol. 8 (12), pp. 001-005, December, 2020. © International Scholars Journals

Full Length Research Paper

Effect of refining on the quality and composition of groundnut oil

E. O. Aluyor1*, P. Aluyor2 and C. E. Ozigagu1

1Department of Chemical Engineering, University of Benin, Nigeria.

2Department of Vocational and Technical Education, Ambrose Alli University, Ekpoma, Nigeria.

Accepted 09 July, 2020

Abstract

Crude groundnut oil was obtained by solvent extraction from groundnut seeds and refined. The crude and refined oils were then analyzed. The results obtained show that the acid value decreased from 2.890 to 0.420 mg/KOH. Free fatty acid decrease after refining from 2.82 to 2.02%; phospholipids decreased from 23.11 to 5.53%; copper content decreased from 0.37 to 0.0361% and iron decreased from 3.98 to 0.31%. These can be viewed as an improvement in the quality of the oil after refining. Refining did not have much effect on the fatty acids composition except for slight inconsistent decrease in saturated and unsaturated fatty acids.

Key words: Free fatty acids, phospholipids, crude, refined, gas chromatography.