5～6岁儿童锌需要量的探讨

A Study on Zinc Requirement in Childhood Aged 5～6 Years Old

摘要: 将膳食因素与锌摄入量作多元线性回归分析,得出多元回归方程:锌摄入(mg)=-0.426+0.053×蛋白质摄入(g)+0.003×磷摄入(mg)+0.234×锌贮留(mg)+0.078×粗纤维摄入(g)(n=27,P<0.001,R²=0.927).初步认为5～6岁儿童每日摄入5～6mg锌就能保证发育,这个锌摄入水平可能是目前膳食条件下锌的需要量.从多元回归方程可以看出,锌的需要量受膳食因素影响.各国各地区居民膳食因素不同,所以锌需要量也不完全一致.

Abstract: Based on present Chinese dietary composition、nutritional condition and zinc metabolic balance,we suggest that 5-6mg dietary zinc intake is enough for children 5-6 years old.5-6mg zinc intake could be the zinc requirement for them at present.We gave a multiple regression formula to estimate zinc intake:Zinc intake=-0.426+0.053×protein intake(g)+0.003×phosphorus intake(mg)+0.234×zinc retention(mg)+0.078×fiber intake(g).Dietary factors influencing zinc requirements have been identified.Zinc requirements will change with the different levels of dietary factors.