Vasco Elsa Reis, Alvito Paula Cristina
a National Health Institute Dr. Ricardo Jorge, Food and Nutrition Department , Lisbon , Portugal.
Food Addit Contam Part B Surveill. 2011;4(3):218-25. doi: 10.1080/19393210.2011.611951.
Commercial baby food labelled as from organic or conventional origin, including vegetable-based baby foods, fruit purees and fruit juices (n = 80), were analysed for nitrate content by an in-house validated HPLC method. Nitrate contents ranged from 5 to 230 mg kg(-1) with a mean concentration of 102 mg kg(-1) for vegetable-based baby foods, and a median of 5 mg kg(-1) for both fruit purees and juices. One sample of vegetable-based baby food was higher than the legislated value (200 mg kg(-1)). There were no significant differences between average nitrate levels in analysed samples regarding both farming systems. The estimated nitrate intake through baby foods for a mean nitrate concentration of 47 mg kg(-1) ranged between 0.5 (15% of ADI) and 1.3 mg kg(-1) bw day(-1) (35% of ADI). The ADI level was exceeded (107-146% of ADI) only for the 95th and 99th percentiles of nitrate concentration.
对80种标明为有机或传统来源的商业婴儿食品进行了分析，这些食品包括蔬菜类婴儿食品、果泥和果汁，采用内部验证的高效液相色谱法测定其硝酸盐含量。蔬菜类婴儿食品的硝酸盐含量在5至230毫克/千克之间，平均浓度为102毫克/千克，果泥和果汁的中位数均为5毫克/千克。一份蔬菜类婴儿食品样本高于法定值（200毫克/千克）。在所分析的样本中，两种种植体系的平均硝酸盐水平没有显著差异。对于平均硝酸盐浓度为47毫克/千克的情况，通过婴儿食品估计的硝酸盐摄入量在0.5（占每日允许摄入量的15%）至1.3毫克/千克体重·天-1（占每日允许摄入量的35%）之间。仅在硝酸盐浓度的第95和第99百分位数时超过了每日允许摄入量水平（占每日允许摄入量的107 - 146%）。
