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American Journal of Clinical Nutrition, Vol 52, 135-141, Copyright © 1990 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
PB Moser-Veillon and RD Reynolds
Department of Human Nutrition and Food Systems, University of Maryland, College Park 20742.
Forty lactating women were randomly assigned to four treatment groups. Beginning at 1-d postpartum the women in each group received a daily vitamin-mineral supplement for 9 mo. The treatments differed only in the amount of vitamin B-6 (0.5 or 4.0 mg pyridoxine) and zinc (0 or 25 mg) included in the supplements. The 4.0-mg pyridoxine supplements significantly increased plasma total vitamin B-6, plasma pyridoxal phosphate (PLP), and milk total vitamin B-6, thus showing that maternal intake exerts a significant effect on vitamin B-6 concentration in milk. There was no effect of vitamin B-6 intake on plasma, erythrocyte, or milk zinc concentration. The 25-mg zinc supplement also had no effect on plasma, erythrocyte, or milk zinc concentration, suggesting that maternal zinc intake is not a major regulator of milk zinc concentration.
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