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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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da Silva, Emanueli do Nascimento [1] ; Heerdt, Gabriel [1] ; Cidade, Mirla [1, 2] ; Pereira, Catarinie Diniz [1] ; Morgon, Nelson Henrique [1] ; Cadore, Solange [1]
Total Authors: 6
[1] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil
[2] Univ Fed Roraima, Dept Chem, Boa Vista, RR - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Microchemical Journal; v. 119, p. 152-158, MAR 2015.
Web of Science Citations: 21

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)

FAPESP's process: 13/26855-2 - Evaluation of bioaccessible and bioavailable fractions of nutrients and contaminants in vegetables
Grantee:Solange Cadore
Support type: Regular Research Grants
FAPESP's process: 12/15020-4 - Bioaccessibility and bioavailability of nutrients and toxic elements in lettuce (Lactuca sativa)
Grantee:Emanueli Do Nascimento da Silva
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 08/57808-1 - National Institute of Advanced Analytical Science and Technology
Grantee:Celio Pasquini
Support type: Research Projects - Thematic Grants