Lipolysis of Triglycerides of Human Milk During Storage at Low Temperatures: A Note of Caution.
Bitman, Joel *; Wood, Larry D. *; Mehta, Nitin R. +; Hamosh, Paul +; Hamosh, Margit +
[Article] Journal of Pediatric Gastroenterology & Nutrition. 2(3):521-524, August 1983.

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Summary: Human milk samples were divided at collection and stored at -70[degrees]C or -20[degrees]C, or extracted immediately with organic solvent, to compare lipid class composition. Storage at -20[degrees]C was not satisfactory for maintaining milk lipid composition, for it resulted in hydrolysis of triglycerides and the appearance of free fatty acids.

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