Quality Assessment Of Brands Of Vegetable Oil Marketed In Lagos, Nigeria
Keywords:
Vegetable oil, Quality, Triglycerides, Rancidity, Iodine valueAbstract
Background: Vegetable oils are widely used in the preparation of food for human and animal consumption. They are an essential component of human diet and therefore affect health and quality of life. The aim of the this study was to analyze available brands of vegetable oils in Lagos market for selected quality parameters and compare same with standard values of Codex Alimentarius Commission of FAO/WHO.
Methods: Ten brands of vegetable oil (of soya bean, palm olein and palm fruit source) were purchased from shops in Lagos markets and analyzed for volatile content, refractive index, specific gravity, acid value, iodine value and saponification value using standard methods. Values obtained were compared to Codex Alimentarius standard values for each oil type as a means of assessment of oil quality.
Results: The study revealed that 80% of the samples met Codex Alimentarius standards on all the parameters studied. One soya bean oi1 sample failed the iodine value test, with a value of 101.2 g/100g as against the standard range of 120 -1419/100g. The palm oil sample did not meet standards for volatile content, refractive index and acid value.
Conclusion: The brands of vegetable oi1 studied (except the palm oi1 sample) were generally of good quality and in compliance with Codex Alimentarius standards for refined vegetable oi1.
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