Aluminum content and effect of in vitro digestion on bioaccessible fraction in cereal-based baby foods. (May 2020)

• Record Type: Journal Article
• Authors: de Paiva, Esther Lima; Medeiros, Camila; Milani, Raquel Fernanda; Morgano, Marcelo Antônio; Pallone, Juliana Azevedo Lima; Arisseto-Bragotto, Adriana Pavesi
• Is Part Of: Food research international. Volume 131(2020)
• Publication Date: 2020-05
• Subjects: Cereal -- Infant food -- Mineral -- Inorganic contamination -- Provisional tolerable intake -- Risk assessment -- Toxic potential; Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2019.108965
• Languages: English
• ISSNs: 0963-9969

Abstract

Graphical abstract: Highlights: Total concentration and bioaccessible fraction of aluminum in baby food samples. In vitro digestion method was developed and optimized to evaluate aluminum. Total concentration and bioaccessibility varied according to the product composition. Exposure to Al was estimated and compared with Provisional Tolerable Weekly Intake. Abstract: The aim of this work was to determine the total concentration and the effect of in vitro digestion on the bioaccessible fraction of aluminum (Al) in 35 different cereal-based baby food samples and estimate the exposure to this element considering the consumption of this product. Total Al content was determined by inductively coupled plasma optical emission spectrometry after oxidative microwave digestion. An in vitro digestion method was applied and optimized to evaluate the bioaccessible fraction. The methods performance was efficient for both approached analysis and presented limits of detection and quantitation of 53 μg kg −1 and 89 μg kg −1, respectively. Total concentration and bioaccessibility varied according to the product composition (rice, oat, wheat, barley, corn, multicereal and fruit). Multicereals and fruit-based (plum) cereals presented the highest total Al concentrations (8.82 mg kg −1 and 7.49 mg kg −1, respectively), whilst lower values were observed for corn and rice flour cereals (0.92 mg kg −1 and 1.09 mg kg −1, respectively). The bioaccessible fraction varied from 1.5% to 10.4% in the evaluated samples. Exposure to Al was estimated and compared with the Provisional Tolerable Weekly Intake (PTWI) of 2 mg kg −1 body weight. The results showed that the daily consumption of three portions of cereals contributes up to 10.48% of the PTWI, when considering the total Al concentration reported in this study.