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Journal of Tropical Pediatrics 1985 31(3):157-159; doi:10.1093/tropej/31.3.157
© 1985 by Oxford University Press
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Trace Elements in Thai Breast Milk and Infant Formulas

Pipop Jirapinyo, MD, Faculty of Medicine*, Prapa Pringsulaka, BPharm, Faculty of Medicine**, Sompool Kritalugsana, MD**, Wirapong Chatranon, MD* and Burana Chavalittamrong, MD, Faculty of Medicine*

Siriraj Hospital, Mahidol University Bangkok 7, Thailand
* Department of Pediatrics
** Department of Forensic Medicine

A total of 150 breast milk samples obtained from Thai mothers of preterm and full-term infants, during the 7th to 28th day of lactation, and 60 samples of infant formulas obtained from local markets were analyzed for zinc, copper and chromium concentrations using atomic absorption spectrophotometry. The mean zinc concentration of breast milk and infant formulas were 1.9 mg/l and 2.9 mg/l respectively. The copper concentrations in breast milk and infant formulas were approximately 0.4 mg/l. The chromium concentrations were 0.08 mg/l and 0.07 mg/l from milk of mothers of full-term and preterm infants respectively, while the chromium concentration of infant formulas was only 0.05 mg/l. This study indicates that the zinc and copper content of the infant formulas are not sufficient as daily requirement for the infant's growth.


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