Fatty acid composition of human milk during the 1st month after term and preterm delivery |
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Authors: | O Genzel-Boroviczényy J Wahle B Koletzko |
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Institution: | (1) Division of Neonatology, Klinikum Grosshadern, Munich, Germany, DE;(2) Kinderpoliklinik, University of Munich, Pettenkoferstrasse 8a, D-80336 Munich, Germany Tel.: 49-89-5160-3511 Fax: 49-89-5160-4733 E mail: bert.koletzko@lrz.uni-muenchen.de, DE |
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Abstract: | The fatty acid composition of human breast milk was determined longitudinally after term and preterm delivery by high resolution
gas liquid chromatography. Milk samples were obtained at days 5, 10, 20 and 30 after term (n = 38) or preterm (n = 19) delivery. The saturated fatty acids C10:0 and C12:0 and the polyunsaturates linoleic acid (C18:2ω-6) and α-linolenic
acid (C18:3ω-3) increased significantly from day 5 to day 10, whereas arachidonic acid (C20:4ω-6), total ω-6 long-chain polyunsaturates
(LCP), docosahexaenoic acid (C22:6ω3) and total ω-3 LCP decreased significantly. Term and preterm milk did not differ in percentage
content of linoleic acid, α-linolenic acid and LCP at any time point. Preterm milk contained significantly more medium and
intermediate chain fatty acids (C10:0, C12:0 and C14:0) than term milk on days 5 (12.28 vs 9.78%; P > 0.05), 10 (16.25 vs 12.62%; P > 0.05) and 20 (17.29 vs 13.47%; P > 0.005).
Conclusion The milk of mothers of preterm infants is not better suited to meet the high LCP requirements of their infants during the
first weeks after birth. The slightly higher proportion of medium and intermediate chain fatty acids in preterm milk during
the 1st month after birth might be advantageous for the fat and calcium absorption of preterm infants.
Received: 22 February 1996 / Accepted: 1 August 1996 |
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Keywords: | Lipids Infant nutrition Medium chain fatty acids Long-chain polyunsaturated fatty acids Trans fatty acids |
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