adamu usman
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Background and objective
Table salt is an ideal vehicle for delivery of micronutrients. This study assessed the quality of refined salts and locally processed salts in Awe and Keana local government areas, Nasarawa state, Nigeria.
Materials and methodsForty-five samples were collected from local markets in Nasarawa state. Moisture content, water insoluble matters, and acid insoluble matters were determined according to AOAC method. Sodium chloride and iodine contents were determined by titrimetric methods. Concentration of calcium, potassium, magnesium, and sodium was determined by inductively coupled plasma-mass spectrometry (ICP-MS).
Results andconclusionMoisture content of the refined and unrefined salts ranged from 0.060 to 0.133% and 0.599 to 2.574%, respectively. The moisture content, and amounts of water insoluble and acid insoluble matters in the unrefined salts were higher than the refined salts. Concentration of sodium chloride in most of the unrefined salts did not meet the national minimum limit of 97%. Concentration of iodine, calcium, potassium, and magnesium in the refined salts was significantly higher than the unrefined samples. Iodine content in the refined and unrefined salts ranged from 22.22 to 40.20 mg/kg, and below detection limit to 6.35 mg/kg, respectively. None of the unrefined salts met the minimum iodine content of 30 mg/kg. We concluded that the locally processed salts available in Awe and Keana local markets were highly deficient in essential elements and had poor quality for using as table salt.
Keywords: Essential elements, Iodine, Refined salt, Table Salt, Unrefined salt
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