Evaluation of the physicochemical parameters of edible oilssold in the three cities of Burkina Faso,
Auteur(s): Kabakdé Kaboré, Kiéssoun Konaté, Hemayoro Sama, Roger Dakuyo, Abdoudramane Sanou, David Bazié, Mamounata Diao, Mamoudou Hama Dicko
Auteur(s) tagués: Hemayoro SAMA ;
Résumé

The edible oil needs of African countries are met by imported or locally producedones. Therefore, consumers are generally confronted with a choice of edible oils ofpoorly controlled quality. However, quality control of edible oils for local consumptionis of high necessity. This study aimed to assess the quality of edible oils sold and con-sumed in some cities in Burkina Faso. Oil samples collected in the cities of Dédougou,Koudougou, and Nouna were used for several analyses. Oil samples from palm, re-fined and unrefined cottonseed, and groundnut were collected. Standard methodswere used to assess the physicochemical quality parameters of the oils, including theperoxide value, water and volatile matter content, acid value, traces of soap, and min-eral oil contents. The parameters varied significantly depending on the oil type, butnot by the locality of origin. The peroxide indices had varied from 3.24 to 39.99 mEqO2/kg oil. The acid indices varied from 0.22 mg KOH/g to 1.24 mg KOH/g. The waterand volatile matter contents ranged from 0.04% to 0.88%. The test for traces of soapgave values ranging from 0 to 76 ppm. For the mineral oil test, four samples of cot-tonseed oil collected in Dedougou gave positive results. Compared to internationalreference standards, in particular the Codex Alimentarius standard, it may constitutea health risk for consumers. The poor storage, distribution, and marketing conditionsof the oils could explain their poor quality. In order to provide consumers with qualityoils, regular controls must be undertaken in the places where the oils are stored and/or marketed.

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