Composition of breast milk of lactating adolescents in function of time of lactation.

Autor: Bolognini Pereira K; Nutritionist, Clinical Nutrition Specialist. Master of Applied Science in Health Products (PPG-CAPS). College of Pharmacy.. vilma.blondet@gmail.com., de Azeredo VB; D.Sc.-Adjunct Professor, School of Nutrition, Department of Nutrition and Dietetics.. vilma.blondet@gmail.com., Barros da Sileira C; Undergraduate Nutrition, Scientific Initiation Scholarship (PIBIC-CNPq). College of Nutrition. Universidade Federal Fluminense. Niterói. RJ. Brazil.., Pedruzzi LM; Undergraduate Nutrition, Scientific Initiation Scholarship (PIBIC-CNPq). College of Nutrition. Universidade Federal Fluminense. Niterói. RJ. Brazil..
Jazyk: angličtina
Zdroj: Nutricion hospitalaria [Nutr Hosp] 2013 Nov 01; Vol. 28 (6), pp. 1971-6. Date of Electronic Publication: 2013 Nov 01.
DOI: 10.3305/nutr hosp.v28in06.6909
Abstrakt: Unlabelled: The aim of this study was to evaluate the composition of breast milk of lactating adolescents in function of lactation time.
Methods: We followed 51 lactating adolescents, between the 6th and 14th weeks postpartum (WPP). The determination of fat, protein and lactose in milk were conducted, respectively, by the methods of Lucas, Lowry and Perry & Doan. Micronutrients were determined by atomic absorption spectrophotometry. Data was presented by the mean and standard error. ANOVA with repeated measures was used and Tukey as post test. It was accepted a significance level of 5%.
Results: There was a significant reduction (P<0.05) in protein content during the postpartum weeks studied (6th: 16.6 ± 1.1; 10th: 13.7 ± 1.0; 14th WPP: 12.3 ± 1.1 g/day). The lactose (6th: 60.2 ± 1.9; 10th: 60.4 ± 2.6; 14th WPP: 65.1 ± 4.0 g/day) and fat (6th: 41.6 ± 3.3; 10th: 36.2 ± 3.4; 14th WPP: 31.5 ± 9.0 g/day) concentration remained unaffected. The zinc concentration in the breast milk was lower than that is commonly found in literature (mean 1.16 mg/day). The copper, iron, calcium and phosphorus concentration was sufficient to meet the needs of the infants between 0 and 6 months old.
Conclusion: The lactation period did not influence the concentration of micronutrients, lactose and lipids, but there is a reduction on protein of the breast milk. In spite of the reducing concentration of protein, it is sufficient to meet the needs of infants from 0 to 6 months old.
(Copyright AULA MEDICA EDICIONES 2013. Published by AULA MEDICA. All rights reserved.)
Databáze: MEDLINE
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