CENTESIMAL COMPOSITION AND IN VITRO BIOACCESSIBILITY OF IRON IN LEAVES OF TWO NON-CONVENTIONAL OLERICULTURAL SPECIES

Authors

DOI:

https://doi.org/10.20873/DEZ_23_04

Abstract

This work aimed to determine the centesimal composition and in vitro bioaccessibility of iron in leaves of unconventional food plants, ora-pro-nobis and taioba. Moisture and ash were determined by gravimetry, lipids by the Goldfish method, proteins by the Kjedahl method, and total carbohydrates by difference. Total iron (Fe) contents were quantified by flame atomic absorption spectrometry (FAAS) after decomposition. The in vitro bioaccessibility of Fe was performed by the INFOGEST method and quantification by FAAS. The results indicated a carbohydrate content higher than that found in conventional vegetables and taioba had a high lipid content. The total iron concentration was higher than the values described in the literature for vegetables that are sources of iron, respectively for ora-pro-nobis and taioba the values of 0.80 mg Fe/100g and 0.89 mg Fe/100g. The fraction of bioavailable iron after the in vitro digestion process was 6.59% for taioba leaves and 40.00% for ora-pro-nobis. The results suggest that taioba and ora-pro-nobis leaves are total and bioaccessible sources of iron and that the consumption of unconventional food plants can contribute to the improvement of human nutrition.

Published

2023-12-28

How to Cite

Lopes Siqueira, A. F., de Oliveira Pinheiro, A. P., Mendes Pacheco Narita, I., Dalla Villa, R., & Paiva de Oliveira, A. (2023). CENTESIMAL COMPOSITION AND IN VITRO BIOACCESSIBILITY OF IRON IN LEAVES OF TWO NON-CONVENTIONAL OLERICULTURAL SPECIES. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 10(3). https://doi.org/10.20873/DEZ_23_04