Evaluation of Fe and Zn bioaccessibility in non-conventional food plants employing a stable isotope approach based on a modified INFOGEST static in vitro digestion method

• Grant number: 23/09766-8
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• Effective date (Start): January 08, 2024
• Effective date (End): January 01, 2025
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Science
• Principal Investigator: Eduardo Purgatto
• Grantee: Alexandre Minami Fioroto
• Supervisor: Elizabeth Bailey
• Host Institution: Faculdade de Ciências Farmacêuticas (FCF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Research place: University of Nottingham, Sutton Bonington, England
• Associated to the scholarship: 20/13635-8 - Evaluation of Fe, Cu, Zn, Ca, Mg, Mn, Na, K, and P bioaccessibility and speciation Ca and Fe in unconventional food plants, BP.PD

Abstract

In vitro simulation of gastrointestinal digestion is widely employed to determine the bioaccessibility of mineral nutrients. In the project (20/13635-8) to which this proposal is linked, previous assays were carried out to evaluation of minerals bioaccessibility in non-conventional food plants (ora-pro-nobis, taioba and serralha). However, it was not possible to quantify some minerals in digested samples, due to their high concentrations in the analytical blanks (fluids), which resulted in high limits of quantification (LOQ). Muleya et al. (2021a) proposed a stable isotope approach to discriminate the minerals derived from samples and reagents, allowing the accurately determination of Fe and Zn bioaccessibility. Thus, this approach can be applied to overcome the challenges encountered during the study of the non-conventional food plants. (AU)