caa a22 4500 606243240 CHVBK 20210128101323.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11694-015-9250-7 doi (NATIONALLICENCE)springer-10.1007/s11694-015-9250-7 Trace element concentrations in commercial gluten-free amaranth bars [Elektronische Daten] [Melisa Hidalgo, Sonia Sgroppo, José Camiña, Eduardo Marchevsky, Roberto Pellerano] Gluten-free foods are specially designed to be consumed by people who suffer from celiac disease or some type of gluten intolerance. Few studies are currently available about trace element contents in gluten-free foods. This study aimed at analyzing the concentrations of 15 trace elements in commercial gluten-free amaranth bars by inductively coupled plasma optical emission spectrometry, after wet digestion by microwave system. The accuracy of the method was determined by the use of a standard reference material (NIST SRM 1570a Spinach Leaves) and recovery experiments, obtaining satisfactory values in all cases. The contents of the investigated trace elements in gluten-free amaranth bars were found to be in the range: Al (3.7-8.1µg/g), Co (0.02-0.07µg/g), Cr (0.05-0.25µg/g), Cu (1.80-6.12µg/g), Fe (7.0-14.5µg/g), Mn (6.5-10.6µg/g), Ni (0.30-0.78µg/g), Pb (0.25-1.12µg/g), Sr (1.4-2.7µg/g), and Zn (4.7-9.8µg/g). Some of the essential trace elements were found to have good nutritional contribution in accordance to daily nutrient recommendations for adults. The concentrations of non-essential elements such as Al, Ni and Sr, were very low in all samples. The levels of toxic elements such as As, Cd, Sb and Tl were not detected in any of the samples, and do not pose any threat to consumers. However, the Pb concentrations were above the safety limits in 8.9% of the studied samples. Therefore, regular monitoring of this toxic metal should be conducted in the future, to ensure the quality of the gluten-free products for human health. Springer Science+Business Media New York, 2015 Snacks nationallicence Pseudo-cereal nationallicence ICP-OES nationallicence Nutrition nationallicence Celiac disease nationallicence Hidalgo Melisa Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut Sgroppo Sonia Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut Camiña José Instituto de Ciencias de la Tierra y Ambientales de la Pampa (Incitap-CONICET), Universidad Nacional de la Pampa, Av. Uruguay 151, 6300, Santa Rosa, La Pampa, Argentina aut Marchevsky Eduardo Instituto de Química San Luis (Inquisal-CONICET), Universidad Nacional de San Luis, Av. Ejército de los Andes 950, 5700, San Luis, Argentina aut Pellerano Roberto Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut Journal of Food Measurement and Characterization Springer US; http://www.springer-ny.com 9/3(2015-09-01), 426-434 2193-4126 9:3<426 2015 9 11694 https://doi.org/10.1007/s11694-015-9250-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11694-015-9250-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hidalgo Melisa Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut NATIONALLICENCE 700 1- Sgroppo Sonia Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut NATIONALLICENCE 700 1- Camiña José Instituto de Ciencias de la Tierra y Ambientales de la Pampa (Incitap-CONICET), Universidad Nacional de la Pampa, Av. Uruguay 151, 6300, Santa Rosa, La Pampa, Argentina aut NATIONALLICENCE 700 1- Marchevsky Eduardo Instituto de Química San Luis (Inquisal-CONICET), Universidad Nacional de San Luis, Av. Ejército de los Andes 950, 5700, San Luis, Argentina aut NATIONALLICENCE 700 1- Pellerano Roberto Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5470, 3400, Corrientes, Argentina aut NATIONALLICENCE 773 0- Journal of Food Measurement and Characterization Springer US; http://www.springer-ny.com 9/3(2015-09-01), 426-434 2193-4126 9:3<426 2015 9 11694