3～6岁儿童锌和蛋白质补充试验研究

对289名3～6岁儿童为期2个月补充锌和蛋白质,补充期热能、蛋白质和锌的摄入量分别达到RDA82.6％～88.2％、86.2％～93.3％、105.0％～110.3％。膳食蛋白质来源豆类和动物类约占43％,锌约50％由饮料补充。实验结束时,唾液锌值由补充前的56±35μg/L上升到85±38±g/L;味觉测试积分值5分者由42.6％上升至68.6％,≤4分者由57.4％下降至31.4％;发锌值<110μg/g者由64.6％下降至36.3％,均值由90.6μg/g上升至138.7μg/g(P<0.05)。尿羟脯氨酸指数≥2者,由33.9％上升至58.9％,<2者,由66.1％降至41.1％(P<0.01);尿素氮肌酐比值≥12者,由11.1％上升至42.1％,<12者,由88.9％降至57.9％(P<0.01)。身高月增长值基本达到1985年10省城区同龄儿童月增长参考值。显示了补充效果。

Supplemental test and survey on zinc and protein nutrition status of 3～6 years children

A comprehensive survey of zinc and protein nutrition status was con- ducted on 289 children of 3~6 year-old. Those hair zinc lower than 150μg/g were supplied with egg/milk or drinking rich in protein or zinc. After 2 months of supplementation, the results showed that urinaryy hydroxyproline index over or equal to 2(critical value)increased from 33.9% to 58.95%;those below 2,reduced from 66.1%to 41.1%(P <0.01).urea N /creatinine ratio over or equal to 12(critical value)increased from 11.1%to 42.1%,those below 12,reduced from 88.9%to 57.9%(P<0.01). Hair zinc, below 110μg/g(critical value)reduced from 64.6% to 36.3%, the mean value increased from 90.6μg/g to 138.7μg/g(P<0.05). The results suggested that supplement test with zinc and protein co- uld improve significantly the zinc and protein nutritional status of the children.