Abstract

This study evaluated the validity of nutrient and food group intakes estimated by an FFQ against biomarkers. A 71-item semiquantitative FFQ was administered to 210 Brazilian children and adolescents aged 9–13 years. Intakes were correlated with biomarkers in plasma and red blood cells. Correlations between nutrients and their biomarkers were presented for animal protein, myristic acid (C14:0), EPA, DHA, β-carotene, folate, and vitamins B3, B5 and B6. Food groups and biomarkers were correlated as follows: fish products with EPA and DHA; milk and dairy with C14:0, pyridoxal 5'-phosphate and vitamin B12; total vegetables and dark green and orange vegetables with β-carotene; 5-methyltetrahydrofolate with green vegetables; and flour products with para-aminobenzoylglutamic acid. This FFQ is a valid tool for ranking Brazilian children and adolescents according to their intake of several nutrients and food groups.

摘要

本研究评估了通过 FFQ 估计的营养素和食物组摄入量对生物标志物的有效性。对 210 名 9-13 岁的巴西儿童和青少年进行了 71 项半定量 FFQ。摄入量与血浆和红细胞中的生物标志物相关。动物蛋白、肉豆蔻酸 (C14:0)、EPA、DHA、β-胡萝卜素、叶酸和维生素 B3、B5 和 B6 的营养物质与其生物标志物之间的相关性被提出。食物组和生物标志物的相关性如下：鱼产品含有 EPA 和 DHA；含 C14:0、吡哆醛 5'-磷酸和维生素 B12 的牛奶和乳制品；含β-胡萝卜素的总蔬菜和深绿色和橙色蔬菜；5-甲基四氢叶酸与绿色蔬菜；和含有对氨基苯甲酰谷氨酸的面粉制品。