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Extraction and characterization of palm kernel oil from the kernel of palm tree (elaeis guineensis)

Author:

John Ama Ibiam and Princely Onyemere Anosike

Subject Area:

Life Sciences

Abstract:

Palm kernel oil (pko) was extracted from its kernel using Soxhlet extraction techniques with normal hexane as the solvent. The oil extracted was light brown in colour with no offensive odour. Proximate compositions of the palm kernel oil were determined and physicochemical analyses were also carried out on the oil extracted. The physicochemical analyses revealed moisture content of 0.89%; oil yield of 47.5%; specific gravity of 0.91; refractive index of 1.46; ash content of 5.30%; pH of 6.84; peroxide value of 10Meq/Kg; iodine value of 45.6mg/g; acid value of 3.53mg/g; free fatty acid of 1.775; saponification value of 187.93mgKOH/g; ester value of 184.4 mgKOH/g. The results of the investigation also showed that the oil was soluble in chloroform and ethanol, partially insoluble in both petroleum ether and carbon tetrachloride; and was insoluble in water.

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