SciELO - Scientific Electronic Library Online

vol.28 issue6Validation of an instrument to measure food practices in chilean families of school children aged 4-7 yearsDietary patterns of young adolescents in urban areas of Northeast Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611


BOLOGNINI PEREIRA, Kallyne; BLONDET DE AZEREDO, Vilma; BARROS DA SILEIRA, Camila  and  MAGNAGO PEDRUZZI, Liliana. Composition of breast milk of lactating adolescents in function of time of lactation. Nutr. Hosp. [online]. 2013, vol.28, n.6, pp.1971-1976. ISSN 1699-5198.

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.

Keywords : Lactation; Adolescence; Weeks postpartum; Nutrients.

        · abstract in Spanish     · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License