• Journal of Nutrition and Health
• /
• v.23 no.3
• /
• pp.179-186
• /
• 1990

Nitrogen(N) concentrations of human milk in various fractions, such as total, protein, nonprotein, whey protein and casein were determined at 2-3 days, 1, 2, 4, 6 and 12 weeks of postpartum. significant decreases in total N, nonprotein N, protein N, whey protein N and casein N were found with time postpartum. Total nitrogen decreased from 401mg/dl at 2-3 days to 211mg/dl at 12 week. Whey protein nitrogen was found to contribute to the total nitrogen decrease with time. The percentage of nonprotein nitrogen was 13% in colostrum and 17-18% in mature milk. The proportions of whey protein and casein nitrogen were 55:45 at 2-3 days and 34:66 at 12 week postpartum. These determinations will provide the basic information on the variability of nitrogen components as lactation proceed.

• Journal of the Korean Society of Food Culture
• /
• v.18 no.4
• /
• pp.320-332
• /
• 2003

This study evaluated the effect of the nutrition education about infant feeding on the change of mother's knowledge, attitude and practice of weaning. The subjects consisted of treatment group (n=54) and control group (n=34). The treatment group participated in 6 times nutrition education and 5 times surveys. Nutrition education for weaning of the treatment group improved nutrition knowledge, attitude and practice in infant feeding. Before education, mean scores of control group and treatment group were 7.3 and 7.5 respectively but there was no significant difference. Both group got low score in a statement about weaning period, but they got good score in a statement about weaning method. After education, treatment group got better score(9.1) than control group(8.3) significantly (p<0.05). Treatment group was more desirable than control group specially in a use of Sun-sik, sugar, salt and weaning food mixed with formula after education (p<0.05). Practice of spoon feeding was more frequent in treatment group after education, however, control group used sugar and commercial weaning food more frequently than treatment group(p<0.05). Intake frequency of cow's milk and cookies of infants at age 9-12 month in control group was higher than treatment groups(p<0.01). Thus the nutrition education to mother seems to be effective in achieving desirable dietary behavior of infants.