Content, speciation and in vitro bioaccessibility of trace elements in seaweeds and derived food products
da Silva Junior, E.C.; Babaahmadifooladia, M.; Folens, K.; dos Reis, A.R.; Guilherme, L.R.G.; van de Wiele, T.; Jacxsens, L.; Du Laing, G. (2023). Content, speciation and in vitro bioaccessibility of trace elements in seaweeds and derived food products. J. food compos. anal. (Print) 118: 105162. https://dx.doi.org/10.1016/j.jfca.2023.105162 In: Journal of Food Composition and Analysis. Elsevier: San Diego. ISSN 0889-1575; e-ISSN 1096-0481, more |  |
| Keywords | | | Author keywords | Edible seaweeds; Western europe; Toxic elements; Speciation analysis; Gastrointestinal digestion; Food contamination |
| Authors | | Top | - da Silva Junior, E.C., more
- Babaahmadifooladia, M., more
- Folens, K., more
- dos Reis, A.R.
| - Guilherme, L.R.G.
- van de Wiele, T., more
- Jacxsens, L., more
- Du Laing, G., more
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| Abstract | Seaweed products currently emerging in Europe are known to be potentially contaminated by toxic elements. The present study focused on the contents and bioaccessibility of trace elements in seaweed products available in Belgium. A total of 231 samples were collected in markets and As, Cd, Ni, Hg, Pb, I and Se concentrations were measured. Moreover, As speciation and the effect of a washing treatment on total concentrations of trace elements were studied. Bioaccessibility was assessed via in vitro simulation of the gastrointestinal digestion. A percentage of 85%, 39% and 4% of the samples exceed the concentration levels permitted for As, Cd and I respectively. Washing significantly reduced concentrations of all trace elements assessed. Speciation analysis identified a high percentage of inorganic As in hijiki. The average bioaccessibility in the small intestine was: As (52%) > Ni (35%) > Pb (27%) > Cd (20%). The population should seek practices such as washing to reduce the concentration and bioaccessibility of trace elements in seaweeds. |
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