Microminerals in Human and Animal Milks

Casey, Clare E.; Smith, A. M.; Zhang, Peifang

doi:10.1016/b978-012384430-9/50027-5

Cited by 33 publications

(32 citation statements)

References 203 publications

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“…The decrease in iron concentration between 1-month and 3.5-month milk samples found in the present study is in agreement with change reported by Siimes et al [25] and those summarized by Casey et al [22]. Our findings indicated an iron concentration ranging from 0.31 to 0.86 mg/L in 1-month milk samples, and iron concentrations ranging from 0.13 to 0.46 mg/L in mature milk at 3.5-months using the GFAAS methods.…”

Section: Resultssupporting

confidence: 83%

“…However, it should be noted that the values obtained in our study from each of the techniques, while differing between themselves, are within the reported ranges of breast milk iron concentrations [2,22,25].…”

Section: Resultsmentioning

confidence: 80%

“…The concentrations of many human breast milk constituents do not vary greatly between populations of mothers throughout the world [22]. However, the published values for iron vary by as much as 66% which may be due to the different analytical procedures used for trace mineral determination.…”

Section: Resultsmentioning

confidence: 97%

“…However, the published values for iron vary by as much as 66% which may be due to the different analytical procedures used for trace mineral determination. Trugo and associates reported mature human breast milk contained 0.90 µg Fe/ml in Brazilian women while a value of 0.30 µg Fe/ml has been reported in lactating women in both Finland and the United States [22,23]. Fransson and associates demonstrated that geographic region and socio-economic status has little effect on the concentration of iron in human milk, comparing Swedish women to privileged and underprivileged Ethiopian women [2].…”

Section: Resultsmentioning

confidence: 99%

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Breast Milk Iron Concentrations may be Lower than Previously Reported: Implications for Exclusively Breastfed Infants

SV¹

2016

Matern Pediatr Nutr

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Objective: Atomic Absorption Spectrophotometry (AAS) is the most common technique for detecting iron in human milk. Quantifying the iron in human milk is essential for determining the amount of dietary iron available to the exclusively breastfed infant. To determine whether more sensitive procedures for iron analyses would yield different values than those obtained using the AAS, flame atomic absorption, we investigated and compared three different analytical techniques using AAS. Methods:The present experiment was conducted as part of a larger study on the iron supplementation of 77 exclusively breast-fed infants. Breastmilk samples were collected from 10 mothers of full-term infants at one and 3½ months of age. Each sample was analyzed with a Perkin-Elmer 2380 Atomic Absorption Spectrophotometer by the following analytical methods: flame atomic absorption spectrophotometry (FAAS), direct sample analysis with graphite furnace atomic absorption spectrophotometry (GFAAS) and the method-of-standard-additions with GFAAS. Results:While all values were within reported ranges, there was significant inter-method variability. The decrease in iron concentration between 1-month and 3.5-month milk samples found in the present study is in agreement with a previous report. GFAAS methods produced consistently lower values than did FAAS: 1 month: direct GFAAS, 0.50 (0.33-0.86) µg/ml; method-of-addition GFAAS, 0.45 (0.31-0.66) µg/ml; FAAS 0.76 (0.25-1.60 µg/ml), mean (range): 3.5-month: direct GFAAS, 0.29 (0.13-0.46 µg/ml; method-of-addition GFAAS, 0.29 (0.11-0.44 µg/ml); FAAS method 0.78 (0.19-1.64) µg/ml. There was no difference between the two GFAAS methods at either time point. Conclusion:The findings obtained from this study suggest that much of the variability seen in the reported values of human milk iron concentrations could be due to the use of different analytical procedures. GFAAS results are consistently lower than those determined by FAAS suggesting that the exclusively breastfed infant consumes less iron than previously thought.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Breast Milk Iron Concentrations may be Lower than Previously Reported: Implications for Exclusively Breastfed Infants

SV¹

2016

Matern Pediatr Nutr

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“…In fact, the high bio-availability of Fe in human milk is probably influenced by its distribution in fractions of the latter (Casey et al , 1995). Thus, investigations of the characteristics of the different composites that link oligo-elements in human milk can assist in elucidating the mechanisms of absorbing these elements.…”

Section: Discussionmentioning

confidence: 99%

Characterization of iron, copper and zinc levels in the colostrum of mothers of term and pre-term infants before and after pasteurization

Costa

Carmo²,

Saunders³

et al. 2003

International Journal of Food Sciences and Nutrition

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Pasteurization is a thermal treatment applied to the milk used in human milk banks so as to provoke the thermic inactivation of pathogenic micro-organisms, with the aim of avoiding contamination of milk that will be offered to new-born infants in clinical conditions very often demanding special care. The literature has very little data available relating to the effect of pasteurization on the concentration of oligo-elements in human milk. The objective of this study was to evaluate the effect of pasteurization on the concentrations of iron (Fe), copper (Cu) and zinc (Zn) in the colostrum of mothers of pre-term (PT) and term (T) infants. Samples were collected from the day of birth to the seventh day after birth. The oligo-elements were analyzed using the total reflection Xray fluorescence technique with synchrotron radiation. The following results of Fe, Cu and Zn (means9/SD) were obtained for the PT and T colostrum samples, non-pasteurized and pasteurized, respectively:

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Human milk

Domínguez-González

Bermejo–Barrera

2015

Handbook of Mineral Elements in Food

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Microminerals in Human and Animal Milks

Cited by 33 publications

References 203 publications

Breast Milk Iron Concentrations may be Lower than Previously Reported: Implications for Exclusively Breastfed Infants

Breast Milk Iron Concentrations may be Lower than Previously Reported: Implications for Exclusively Breastfed Infants

Characterization of iron, copper and zinc levels in the colostrum of mothers of term and pre-term infants before and after pasteurization

Human milk

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