Quantification of Phospholipids in Infant Formula and Growing Up Milk by High-Performance Liquid Chromatography with Evaporative Light Scattering Detector
Phospholipids (PLs) are well known for their excellent emulsifier properties and more recently for their biological functions, such as cell signing, brain development, immune function, heart health, and cancer prevention, besides their physiological role in membrane composition. In dairy products, PLs represent 0.21 of milk fat. The milk PLs comprise phosphatidylcholine (PC), phosphatidylethanolamine (PE), and sphingomyelin (SPH) as the major compounds; phosphatidylinositol and phosphatidylserine are minor PLs. A new generation of dairy products claiming PL family content, such as SPH, is being produced; therefore, a validated method for quantifying PL families in dairy products is needed. In this study, an HPLC-evaporative light scattering detector method to quantify the most abundant milk PL families, i.e., PC, PE, and SPH, in infant formula and growing up milk was developed and validated.
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Document Type: Research Article
Affiliations: 1: Nestl Product Technology Centre, Konolfingen, Switzerland. 2: Nestl Research Centre, Lausanne, Switzerland.
Publication date: May 1, 2010
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- The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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