Selenium in plant-based beverages: total content, estimated bioaccessibility and contribution to daily intake

• Published in: Journal of trace elements in medicine and biology 2024-01, Vol.81, p.127329-127329, Article 127329
• Main Authors: da Paixão Teixeira, José Luan, Rebellato, Ana Paula, Fioravanti, Maria Isabel Andrekowisk, Milani, Raquel Fernanda, Morgano, Marcelo Antonio
• Format: Article
• Language: English
• Subjects: bioaccessibility; ICP-MS; INFOGEST; reference daily intake; ultrasound assisted acid digestion; vegetable beverages
• ISSN: 0946-672X; 1878-3252
• DOI: 10.1016/j.jtemb.2023.127329

The search for alternative protein sources has increased the consumption and commercialization of plant-based beverages (PBBs). This study aimed to determine the total Se content, estimate the bioaccessibility of selenium (Se) in commercial PBBs derived from different raw materials, and evaluate their contribution to the reference daily intake (RDI). An ultrasound assisted acid digestion method and ICP-MS was used to determine Se, and the INFOGEST method to estimate the bioaccessible percentages. Validation of this method was also performed, and the parameters obtained were: LOD and LOQ were 2.1 and 4.0µg/kg, respectively. For accuracy, recovery percentages ranged from 99% and 111% (certified reference materials), and 95% and 101% (spiked experiments for bioaccessible extracts as recoveries). The PBBs presented total Se content between 4-226µg/kg. Bioaccessible percentages ranged from 63.5% (mix of plant sources) to 95.9% (produced with organic cashew nuts). Only one cashew nut PBBs supplied the daily demand of Se, representing 64.6%, 75.3% and 82.2% of the RDI; for lactating and pregnant women, children (≥ 4 years) and adults, respectively. The Se determination method through acid digestion assisted by ultrasound and ICP-MS was considered adequate for the PBBs samples. Se content varied according to the raw material used in sample preparation. High percentages (> 60%) of bioaccessibility were observed and only one PBBs derived from organic cashew nuts supplied the recommended Se demand for different groups of individuals. [Display omitted] •Total Se was determined in different plant-based beverages (PBBs).•The PBBs showed high variation in Se level due to different matrices.•High Se bioaccessibility percentages were found in PBBs samples.•The cashew nut beverage is able to supply Se daily demand.•Future research prospects involving Se in PBBs are proposed.