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Analysis of phospholipids in infant formulas using high performance liquid chromatography-tandem mass spectrometry

Bertram Fong1, Lin Ma, Carmen Norris

  • 1Fonterra Research Centre, Palmerston North 4412, New Zealand. bertram.fong@fonterra.com

Journal of Agricultural and Food Chemistry
|January 10, 2013
PubMed

Insights

Accurate measurement of key infant nutrition components like phospholipids and sphingomyelin is now possible. A new HPLC-MS/MS method precisely quantifies these lipids in infant formulas and dairy ingredients.

Area of Science:

  • Lipidomics
  • Analytical Chemistry
  • Nutritional Science

Background:

  • Phospholipids are vital for infant development, leading to their inclusion in infant formulas.
  • Accurate quantification of these complex lipids is crucial for quality control and nutritional assessment.
  • Dairy-derived ingredients are increasingly used for fortifying infant formulas with essential lipids.

Purpose of the Study:

  • To develop and validate a precise analytical method for quantifying major phospholipid classes and sphingomyelin.
  • To enable accurate assessment of lipid content in infant formulas and dairy-based ingredients.
  • To support the nutritional fortification of infant formulas with essential complex lipids.

Main Methods:

  • High-performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS).
  • Quantification using external standards with similar fatty acid profiles for calibration.
  • Analysis of phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, and sphingomyelin.

Main Results:

  • The method demonstrated high recovery rates for phospholipids, ranging from 92% to 102%.
  • Excellent method repeatability was achieved, with coefficients of variation between 6% and 10%.
  • The HPLC-MS/MS method provides specificity, selectivity, and detailed molecular species information for individual phospholipid classes.

Conclusions:

  • A robust HPLC-MS/MS method is established for quantifying critical phospholipids and sphingomyelin in infant nutrition products.
  • This analytical capability is essential for ensuring the quality and nutritional accuracy of infant formulas and fortification ingredients.
  • The method's precision and detail support advancements in infant nutrition and lipid science.

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