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Fluoride Content of Coconut Water and Its Risk Assessment



Hosseini SS1 ; Mahvi AH1, 2 ; Tsunoda M3
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Science, Tehran, Iran
  3. 3. Department of Preventive Medicine and Public Health, National Defense Medical College, Saitama, Tokorozawa, Japan

Source: Fluoride Published:2019

Abstract

The coconut water in 15 coconuts bought in 7 cities in Iran was examined for various physicochemical properties (electrical conductivity [EC], total dissolved solids [TDS], turbidity, pH, and fluoride [F] concentration) and the risk associated with the intake of F from coconut water was estimated. The SPADNS Zirconium Lake method was applied for the determination of the F concentration. The results showed that coconut water has a significant F concentration, (mean = 3.401 mg/L, range = 2.680– 4.160 mg/L). Significant correlations (Pearson) were found between the EC and TDS (0.980) and between the EC and turbidity (–0.525). The average F intake from the consumption of 350 and 700 mL of coconut water is about 15% and 30%, respectively, of the maximum acceptable daily intake of the fluoride of 0.1 mg/kg body weight/day. The fluoride intake from coconut water should be taken into account when calculating the dietary F intake. © 2019, ISFR,.
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