Composition and bioaccessibility of inorganic elements in plant-based yogurts

Author(s)

Rebellato, Ana Paula ; Fioravanti, Maria Isabel Andrekowisk ; Milani, Raquel Fernanda ; Morgano, Marcelo Antonio

• Document type: Journal article
• Source: Journal of Food Composition and Analysis; v. 123, p. 9-pg., 2023-10-01.

Abstract

This study aimed to evaluate the composition of inorganic elements as well as their bioaccessibility in commercial plant-based yogurt. The samples were mineralized using fast ultrasound-assisted acid digestion, and the inorganic elements were determined by ICP-MS. The method was validated according to the INMETRO guide, with recoveries from 99% to 111%; precision from 2% to 14%, and LOQ ranging from 0.4 mu g/100 g to 2.5 mg/ 100 g. The element concentrations (mg/100 g) of the plant-based yogurts were Ca(<LOQ-239.90); Cu(<LOQ-0.16); Fe (0.07-1.48); K(27.0-226.4); Mg(3.72-23.9); Mn(0.05-0.34); Na(2.77-165.3); P(7.80-189.6); Zn (<LOQ-1.06), and Se (<LOQ-2.18 mu g/100 g). In turn, the animal-based yogurts contained only Ca, K, Mg, Na, Zn, and Se. The bioaccessible Ca was higher in animal-based yogurt (41%), while the bioaccessible fraction of Mn (30%), Cu(25-61%), and Fe(9-33%) was only quantified in the plant-based yogurts. Regarding the trace elements, some samples showed bioaccessibility above 50% for Cr, Ni, Mo, Ba, and Co, while the animal-based yogurts showed bioaccessibility only for Mo(71%). Despite the variation in the mineral contents of plantbased yogurts, the bioaccessibility was similar to that of animal-based yogurt. The bioaccessible fraction (>50%) demonstrates the importance of knowing the composition of plant-based foods to ensure the safety and health of consumers despite the lower contents of the trace elements. (AU)

• FAPESP's process: 17/50349-0 - Plan of institutional development in research of the Institute of Food Technology - ITAL (PDIp)
• Grantee: Claire Isabel Grígoli de Luca Sarantópoulos
• Support Opportunities: Research Grants - State Research Institutes Modernization Program
• FAPESP's process: 22/07015-2 - Study of the bioaccessibility of essential and toxic inorganic elements in plant-based yogurt
• Grantee: Ana Paula Rebellato
• Support Opportunities: Scholarships in Brazil - Post-Doctoral