Use of in vitro digestion method and theoretical calculations to evaluate the bioaccessibility of Al, Cd, Fe and Zn in lettuce and cole by inductively coupled plasma mass spectrometry

Autor(es)

da Silva, Emanueli do Nascimento ^[1] ; Heerdt, Gabriel ^[1] ; Cidade, Mirla ^{[1, 2]} ; Pereira, Catarinie Diniz ^[1] ; Morgon, Nelson Henrique ^[1] ; Cadore, Solange ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil

^[2] Univ Fed Roraima, Dept Chem, Boa Vista, RR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Microchemical Journal; v. 119, p. 152-158, MAR 2015.
• Citações Web of Science: 21

Resumo

Theoretical calculations of the binding energies of metal-polyphenols and metal-cellulose, as well as the hydration energies of metal-polyphenols were used to support the results obtained for the bioaccessibility of aluminium, cadmium, iron and zinc from four types of lettuce and one type of cole that were evaluated using an in vitro gastrointestinal digestion model and inductively coupled plasma-mass spectrometry. The bioaccessibility of Al found in the vegetables were less than 11% of the total Al content, whereas Cd exhibited average bioaccessibility of approximately 14% for the fresh samples and 41% considering the dried vegetables studied. However, the results indicated average bioaccessibility of 35% and 26% for Zn and average bioaccessibility of 19% and 21% for Fe in fresh and dried samples, respectively. The low bioaccessibility of Al is due to its strong binding with all of the vegetable components, whereas the low bioaccessibility of Fe and Zn are due to their interactions with phytates. Cd was observed to be the most bioaccessible element in the dried samples because of its weak interaction with other compenents in the vegetables. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 12/15020-4 - Bioacessibilidade e biodisponibilidade de nutrientes e elementos tóxicos em alface (Lactuca sativa)
• Beneficiário: Emanueli Do Nascimento da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 08/57808-1 - Instituto Nacional de Ciências e Tecnologias Analíticas Avançadas - INCTAA
• Beneficiário: Celio Pasquini
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/26855-2 - Avaliação da fração bioacessível e da biodisponibilidade de nutrientes e contaminantes em hortaliças
• Beneficiário: Solange Cadore
• Modalidade de apoio: Auxílio à Pesquisa - Regular