Comparison of macronutrient content in human milk measured by mid-infrared human milk analyzer and reference methods

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Abstract

Objective: The study aims at evaluating mid-infrared human milk analyzer (HMA) accuracy and precision, in human milk (HM). Study design: Röse-Gottlieb, high-performance anion exchange chromatography-pulsed amperometric detection (HPAEC-PAD), Kjeldahl and amino acid analysis (AA) were selected as references for total fat, lactose and total protein determination. Results: No significant difference was observed in lactose content between HMA and HPAEC-PAD. Significant differences were observed in fat and protein content between HMA and reference methods. However, the difference in fat content was lower than 12%, and therefore within the variability declared by supplier. For protein determination, the BCA protein assay was selected. No significant differences were observed in total protein content measured by BCA assay, Kjeldahl and AA methods. Conclusions: HMA was reliable for the quantification of total fat and lactose content, but not for total protein one. The latter was measured by BCA assay, which yielded comparable results to Kjeldahl and AA methods.

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Giuffrida, F., Austin, S., Cuany, D., Sanchez-Bridge, B., Longet, K., Bertschy, E., … Affolter, M. (2019). Comparison of macronutrient content in human milk measured by mid-infrared human milk analyzer and reference methods. Journal of Perinatology, 39(3), 497–503. https://doi.org/10.1038/s41372-018-0291-8

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