Nascimento Regina C F A, Hochman Virgínia G A, da Silva Camila B M, do Valle Bernardo V, do Amaral Yasmin N di V, Dolinsky Manuela, Vieira Alan A
Universidade Federal Fluminense, Faculdade de Medicina, Departamento Materno-Infantil, Mestrado Profissional em Saúde Materno-Infantil, Niterói, RJ, Brazil.
FIOCRUZ, Instituto Fernandes Figueira, Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente, Rio de Janeiro, RJ, Brazil.
J Pediatr (Rio J). 2025 Jul-Aug;101(4):584-589. doi: 10.1016/j.jped.2025.03.004. Epub 2025 Apr 3.
Human milk has a dynamic composition that is ideal for the needs of infants. However, the factors that affect the nutritional content of human milk are still unclear. This study aimed to evaluate the immediate effect of maternal food intake (lunch) on the macronutrient composition of colostrum.
This prospective study performed a paired analysis of macronutrient concentrations in the colostrum of healthy postpartum women. Three milliliters of colostrum were collected from 65 participants 30 min before and 2 h after a meal (lunch) by manual expression. The nutritional content of the meal was similar for all mothers. Colostrum analysis was performed using a Human Milk Analyzer (Miris®).
The fat content was significantly higher in colostrum samples collected 2 h after lunch than in those collected 30 mins before lunch (2.3 ± 1.1 vs. 2.8 ± 1.4 g %, p = 0.002). No significant differences were observed in the protein (1.9 ± 0.7 vs. 1.9 ± 1.0) and carbohydrate (6.4 ± 0.8 vs. 6.4 ± 0.8) content.
Two hours after the mother had lunch, the colostrum fat concentration increased by 20 %.
母乳具有动态组成，非常适合婴儿的需求。然而，影响母乳营养成分的因素仍不清楚。本研究旨在评估母亲进食（午餐）对初乳常量营养素组成的即时影响。
这项前瞻性研究对健康产后女性初乳中的常量营养素浓度进行了配对分析。通过手动挤奶从65名参与者在进餐（午餐）前30分钟和进餐后2小时收集3毫升初乳。所有母亲的餐食营养成分相似。使用母乳分析仪（Miris®）进行初乳分析。
午餐后2小时收集的初乳样本中的脂肪含量显著高于午餐前30分钟收集的样本（2.3±1.1 vs. 2.8±1.4 g%，p = 0.002）。蛋白质（1.9±0.7 vs. 1.9±1.0）和碳水化合物（6.4±0.8 vs. 6.4±0.8）含量未观察到显著差异。
母亲午餐两小时后，初乳脂肪浓度增加了20%。
