ZINC NUTRITIONAL STATUS OF PREGNANT WOMEN IN BEIJING / 营养学报

ABSTRACT

Dietary intake and biochemical parameters of zinc nutritional status in 270 pregnant women and 44 nonpregnant women have been studied and the results were as follows 1.Dietary zinc intake was about 60% of RDA in both groups.2.The mean plasma Zn concentration declined progressively during gestation; the mean SOD activities and plasma Cu/Zn and alkaline phosphatase activities increased progressively.3.The zinc nutritional status of pregnant women in Beijing was poor. Using plasma Zn concentration less than 10.71 ?mol/l as a low limit, the incidence of zinc deficiency was 6.5%, 20.2% and 25.7% at each of three trimesters respectively.4.Plasma Zn concentration is more sensitive in evalution of nutritional status than hair Zn concentration. Plasma Cu/Zn could reflect zinc nutritional status. The mean SOD activities had similar trend with plasma Zn during pregnancy, and positive correlation with plasma Zn in second trimester (r= 0.2236,P