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对北京市189名乳母(城区80,近郊58,远郊64名)进行了膳食调查及24小时泌乳量、乳中蛋白质、脂肪和乳糖含量的测定。结果表明,这三个地区的乳母的热能及蛋白质的摄取量是适宜的。城区乳母的脂肪摄取量高于远近郊区。铁、硫胺素和尼克酸的摄取量均高于我国的RDA(推荐膳食供给量)。维生素A的摄取量占RDA的46～88％。钙的摄取量很低,仅占RDA的23～42％。城区、近郊及远郊区乳母产后6个月泌乳量每天分别为689±149,784±156及778±163g。三个地区的母乳中蛋白质含量平均皆为1.2g/100g,但脂肪含量不同,分別为3.8±0.14、3.3±0.20和3.1±0.16g/100g,城区母乳中脂肪含量显著高于远近郊区。三个地区母乳中乳糖含量无明显差別,为7.8±0.6,7.5±0.9及8.1±0.7/g100g。北京市三个地区乳母的热能及蛋白质的摄取量是适宜的。泌乳量,乳中蛋白质及乳糖含量三个地区亦无明显差別。
A total of 189 nurses (80 in urban area, 58 in suburban area and 64 in outer suburbs) of Beijing were surveyed and their 24-hour lactation volume and milk protein, fat and lactose contents were measured. The results show that the heat energy and protein intake of lactating mothers in these three regions are suitable. Urban fat nurse’s fat intake higher than the suburbs. Iron, thiamine and niacin intake were higher than our country’s RDA (recommended dietary supply). Vitamin A intake accounts for 46 to 88% of RDA. Calcium intake is very low, accounting for only 23 ~ 42% of RDA. The amount of milk produced at 6 months postpartum in urban areas, suburbs and outer suburbs were 689 ± 149,784 ± 156 and 778 ± 163g, respectively. The average protein content of breast milk in the three regions was 1.2g / 100g, but the fat content was different, which were 3.8 ± 0.14, 3.3 ± 0.20 and 3.1 ± 0.16g / 100g respectively. The fat content in urban breast milk was significantly higher than that in the near and far suburbs. There was no significant difference in lactose content among the three regions, which was 7.8 ± 0.6, 7.5 ± 0.9 and 8.1 ± 0.7 / g, respectively. The energy and protein intake of nurse in three districts of Beijing is suitable. Milk production, milk protein and lactose content in the three regions there is no significant difference.