Biochemical analysis of oil quality from orange seeds (Citrus sinensis)
Yusuf H, Bello KS, Ebu B, Ijebor FD
Citrus sinensis seeds obtained from discards of fruits was washed and prepared for use by decocting, sun drying and grinding. Oil from 50g of Citrus sinensis seeds was extracted by soxhlet extraction method using Diethyl ether as a solvent. The extract was centrifuged to remove particulates. On dry matter basis, the oil yield was found to be 38.45%. The physical evaluations of the oil were based on Texture, Colour, Odour, Moisture, Refractive index and Relative density, whereas chemical evaluation was based on Ash content, Organic matter, Iodine value [IV], Saponification value [SV] and Peroxide value. The experimental results show that oil has golden yellowish colour liquid with pleasant Odour, relative density of 0.8911g/cm3, moisture content of 6.0%, refractive index of 1.467 at 25°C, ash content of 8.0%, organic matter 89.0%, iodine value of 126.24mg/g, Saponification value of 185.38mgKOH/g and peroxide va1ue of 4.89MEq/Kg. The Citrus sinensis seeds oil was classified as a non-drying oil and this non-drying attributes qualifies it for use in applications where oxidation is undesirable e.g. can be used for the production of Soap, Perfumes, candles, flavoring, lubricant in chemical industries, leather dressing industries and in the production of insecticides.