keywords: Cocos nucifera, lipid, phytochemicals, minerals, rancidity
Proximate analysis, physicochemical properties and phytochemical screening of Cocos nucifera oil were carried out using standard methods. Mineral composition of the oil was also determined. The results obtained showed that the percentage oil yield was 35.40%. The proximate analysis gave % moisture, ash, crude fiber, fat, protein and carbohydrate contents as 38.70±1.0, 3.15±0.1, 6.04±0.1, 35.10±0.1, 13.13±1.0 and 3.88±1.0, respectively. The physicochemical properties of the oil are as follow; specific gravity (0.95±0.05), iodine value (48.73±0.6), FFA (0.45±1.4), peroxide value (11.00±0.5 MeqH2O2), saponification value (10.24±0.3 MgKOH/g) and unsaponifiable matter (9.60±0.16%). Phytochemical result shows the presence of 0.21 mg of Flavanoid, 0.02 mg of saponin and 0.92 mg of alkaloid. Analysis of the mineral constituents of the oil extract shows the presence of Sodium, Potassium, Calcium, Magnessium and Iron in the order 3.2±1.0 mg/100g, 2.12±0.1 mg/100g, 1.48±1.1 mg/100g, 0.25±0.1 mg/100g and 1.64±0.1 mg/100g, respectively. These results may suggest the increased use of Cocos nucifera oil for food, medicinal, cosmetic and pharmaceutical purposes.
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