Ruiz-de-Cenzano Manuela, Rochina-Marco Arancha, López-Salazar Óscar, Cervera Maria Luisa, de la Guardia Miguel
University of Valencia, Department of Analytical Chemistry, 50 Dr. Moliner St, 46100 Burjassot, Valencia, Spain.
J AOAC Int. 2017 Nov 1;100(6):1879-1884. doi: 10.5740/jaoacint.17-0032. Epub 2017 May 26.
Children's fast food menus, including hamburgers served with french fries, dessert, and a soft drink, were analyzed to obtain the mineral profile of trace elements. The developed analytical methodology involved sample digestion under pressure inside a microwave oven with a mixture of HNO3 and H2O2 and inductively coupled plasma-optical emission spectrometry. The method was validated by carrying out the analysis of certified reference materials (NIST 1570a spinach leaves, NCS ZC73016 chicken, and NIST 1568a rice flour) and using recovery experiments. Repeatability was verified by analyzing replicate samples. Twenty-six elements were studied, 12 of which-aluminum, barium, calcium, copper, iron, potassium, lithium, magnesium, manganese, sodium, strontium, and zinc-were quantitatively determined. Results were compared with other studies of fast food and children's menus published in the literature, and the nutritional value of samples was assessed with dietary intake guidelines.
对儿童快餐菜单进行了分析，这些菜单包括搭配薯条、甜点和软饮料的汉堡，以获取微量元素的矿物质概况。所开发的分析方法包括在微波炉内用硝酸和过氧化氢的混合物进行压力消解，以及电感耦合等离子体发射光谱法。通过对标准参考物质（NIST 1570a菠菜叶、NCS ZC73016鸡肉和NIST 1568a米粉）进行分析并开展回收率实验，对该方法进行了验证。通过分析重复样品验证了重复性。研究了26种元素，其中12种元素——铝、钡、钙、铜、铁、钾、锂、镁、锰、钠、锶和锌——进行了定量测定。将结果与文献中发表的其他快餐和儿童菜单研究进行了比较，并根据膳食摄入指南评估了样品的营养价值。
