Fluoride content of powdered infant formula meets Australian Food Safety Standards
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Objectives: To identify the fluoride content of powdered formula for infants 0-12 months in products available from Brisbane stores in 2006/07 and compare this with the fluoride content of infant formula products available in Australia 10 years earlier. Methods: A range of available infant formula powders were collected from major supermarkets and chemists in Brisbane, Queensland. The fluoride levels in infant formula powder samples were determined using a modification of the micro-diffusion method of Silva and Reynolds1 utilising perchloric acid and silver sulphate and measured with an ion selective (fluoride) electrode/meter. Fluoride content both prior to and after reconstitution, as well as estimated daily intake according to age was calculated. Results: Formula samples contained an average of 0.49 姠F/g of powder (range 0.24-0.92 姠F/g). After reconstitution with water containing 0mg/L fluoride, the fluoride content averaged 7.09姠F/100mL (range 3.367-22.72 姠F/100mL). Estimated infant fluoride intakes ranged from 0.0039 mg/kg/day for a 6-12 month old infant when reconstituting milk-based formula with non-fluoridated water (0 mg/L), to 0.1735 mg/kg/day for a 0-3 month old infant when reconstituting soy-based formula with fluoridated water (1.0 mg/L). Conclusions: Infant formula powders contain lower levels of fluoride than previously found in Australia in 1996. Implications: This confirms that infants consume only a small amount of fluoride from milk-based powdered infant formula. Although soy-based infant formulas contain more fluoride than milk-based products, the levels still comply with national food standards.
Australian and New Zealand Journal of Public Health
Copyright 2009 Public Health Association of Australia. This is a preprint of an article published in the Australian and New Zealand Journal of Public Health. Reproduced in accordance with the copyright policy of the publisher. The definitive version is available at http://onlinelibrary.wiley.com/
Environmental and Occupational Health and Safety