Abstract
Objective:
To determine fatty acid levels in the US donor milk supply.
Study Design:
Donor human milk samples from Iowa (n=62), Texas (n=5), North Carolina (n=5) and California (n=5) were analyzed by gas chromatography. Levels in the Iowa donor milk were compared before and after pasteurization using Student's t-test. Docosahexaenoic acid (DHA) and arachidonic acid (ARA) levels were compared among all milk banks using analysis of variance.
Result:
ARA (0.4 pre, 0.4 post, P=0.18) and DHA (0.073 pre, 0.073 post, P=0.84) were not affected by pasteurization. DHA varied between banks (P<0.0001), whereas ARA did not (P=0.3). DHA levels from all banks were lower than published values for maternal milk and infant formula (P<0.0001).
Conclusion:
Pasteurization of breastmilk does not affect DHA or ARA levels. However, DHA content in US donor milk varies with bank location and may not meet the recommended provision for preterm infants.
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Acknowledgements
We are grateful to Dr Arthur Spector for his assistance in fatty acid analysis and Dr Patrick Brophy for the use of his laboratory space. Special thanks is extended to Jean Drulis and all the mothers who allowed the study of their milk from The Mother's Milk Bank of Iowa, The Mother's Milk Bank at Austin, WakeMed Mother's Milk Bank and The Mother's Milk Bank in San Jose, California. Financial support for this study was generously provided by the NICHD-K23HD057232 and NIDDK-R01DK081548.
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Baack, M., Norris, A., Yao, J. et al. Long-chain polyunsaturated fatty acid levels in US donor human milk: meeting the needs of premature infants?. J Perinatol 32, 598–603 (2012). https://doi.org/10.1038/jp.2011.152
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DOI: https://doi.org/10.1038/jp.2011.152
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