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NMR-Based Metabolomic Profiling Highlights Functional Nutritional Gaps Between Human Milk, Infant Formulas, and

Gaia Meoni1, Leonardo Tenori1, Giovanni Niero2

  • 1Department of Chemistry "Ugo Schiff", University of Florence, 50019 Florence, Sesto Fiorentino, Italy.

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Summary

Human milk has a unique metabolic profile, distinct from cow's milk, goat's milk, and infant formulas. Advanced metabolomic analysis reveals differences, guiding future formula development for better biomimicry.

Keywords:
NMRbreastfeedingcow milkformula milkgoat milkhuman milkinfant nutritionmetabolomicsmilk biochemistrymilk metabolome

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Area of Science:

  • Metabolomics
  • Nutritional Biochemistry
  • Comparative Analysis

Background:

  • Human milk is the optimal infant nutrition source, containing essential bioactive metabolites.
  • Commercial formulas aim to replicate human milk but exhibit significant biochemical differences.
  • Understanding these differences is crucial for improving infant nutrition.

Purpose of the Study:

  • To characterize and compare the metabolomic profiles of human milk, cow's milk, goat's milk, and various infant and toddler formulas.
  • To identify key metabolites differentiating these milk types using proton nuclear magnetic resonance (1H NMR)-based metabolomics.
  • To assess the biomimicry of commercial formulas relative to human milk.

Main Methods:

  • Analysis of 90 milk samples (human, cow, goat, 8 formula brands) using 1H NMR metabolomics.
  • Identification and quantification of 54 metabolites from NMR spectra.
  • Application of multivariate and univariate statistical analyses to compare milk compositions.

Main Results:

  • Human milk showed unique enrichment in fucosylated oligosaccharides (2'-FL, 3'-FL), N-acetylated carbohydrates, glutamine, and glutamate.
  • Goat milk was higher in creatine, carnitine, and succinate; cow milk had elevated orotate, butyrate, and mannose.
  • Formulas were metabolically distinct from human and animal milk, with variations noted between infant and toddler types.

Conclusions:

  • Despite nutritional adequacy, commercial formulas remain metabolically distinct from human milk.
  • 1H NMR-based metabolomics is a valuable tool for assessing and improving formula composition.
  • Future formula development should aim for metabolomic profiles that more closely mimic human milk.