Determination of total concentration and bioaccessible fraction of metals in infant cereals by MIP OES

Author(s)

de Souza, Alexander Ossanes ^[1] ; Pereira, Camila Correa ^[1] ; Heling, Adriana Iven ^[1] ; Oreste, Eliezer Quadro ^[1] ; Cadore, Solange ^[2] ; Ribeiro, Anderson Schwingel ^[1] ; Vieira, Mariana Antunes ^[1]

Affiliation

^[1] Fed Univ Pelotas UFPel, Postgrad Educ Chem, Lab Metrol Quim LabMeQui, Capao Do Leao, RS - Brazil

^[2] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of Food Composition and Analysis; v. 77, p. 60-65, APR 2019.
• Web of Science Citations: 3

Abstract

The present study provides information about the total concentration and bioaccessible fraction of metals Al, Ba, Bi, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Pb, Ti and Zn in nine different infant cereal samples. An in vitro digestion method was employed to evaluate the bioaccessibility. The determinations were performed by microwave induced plasma optical emission spectrometry (MIP OES). The bioaccessibility varied according to the type of infant cereal sample. The values of bioaccessible fraction (minimum and maximum) for Cu, Fe, Mn, Pb and Zn were 24-68, 1-10, 7-58, 24-100 and 1-7% of the total concentration, respectively. Al and Ti presented bioaccessibility in only two samples: 6% in the multicereal A and 14% in the rice and oat cereal B, respectively. The concentration of Ba, Bi, Cd, and Cr was below the limit of detection for the bioaccessibility method. The obtained concentrations were lower than the daily recommended intake for essential and toxic elements, with exception of Pb in the rice and oat A sample. (AU)

• FAPESP's process: 08/57808-1 - National Institute of Advanced Analytical Science and Technology
• Grantee: Celio Pasquini
• Support Opportunities: Research Projects - Thematic Grants