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Individualized Reconstitution of Human Milk Microbiota: A Feasible Approach in Real-World Settings
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The effect of pasteurization on trace elements in donor breast milk
N Mohd-Taufek1, D Cartwright2,3, M Davies2,3
1School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia.
Summary
Pasteurization minimally impacts most trace elements in donor breast milk, with notable variations between milk donors. The slight decrease in iron is not clinically significant for premature infants.
Area of Science:
- Nutritional Science
- Pediatrics
- Biochemistry
Background:
- Premature infants often rely on pasteurized donor human milk.
- Maternal milk provision is crucial for infant nutrition.
- Pasteurization is a standard safety measure for donor milk.
Purpose of the Study:
- To evaluate the effect of pasteurization on trace element concentrations in donor human milk.
- To identify any significant changes in key nutrients due to heat treatment.
- To assess the impact on elements like zinc, copper, selenium, and iron.
Main Methods:
- Collected breast milk from 16 mothers donating to a milk bank.
- Divided samples into pre- and post-pasteurization aliquots.
- Utilized inductively coupled plasma mass spectrometry for trace element analysis (Zn, Cu, Se, Mn, I, Fe, Mo, Br).
Main Results:
- No significant differences in most trace elements (Zn, Cu, Se, Mn, I, Mo, Br) were observed post-pasteurization.
- A statistically significant decrease in iron (Fe) content was noted (P<0.05).
- High inter-donor variability in trace element concentrations was evident across all samples.
Conclusions:
- Pasteurization has a minimal effect on the majority of trace elements in donor breast milk.
- Observed decreases in iron content are unlikely to be clinically relevant for premature infants.
- Significant variability between donors highlights the importance of comprehensive nutritional assessment.
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