Elemental composition and bioaccessibility of three insufficiently studied Azorean macroalgae

Summary The elemental composition and bioaccessibility of the Azorean macroalgae Petalonia binghamiae, Osmundea pinnatifida and Halopteris scoparia were studied. H. scoparia had the highest Cr, Mn, Co and Ni contents. Iodine content was also the highest in H. scoparia, 1098 ± 54 mg kg dw−1. Content...

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Bibliographic Details
Published in:International journal of food science & technology 2021-01, Vol.56 (1), p.330-341
Main Authors: Afonso, Cláudia, Matos, Joana, Campos, Ana M., Gomes, Romina, Delgado, Inês, Coelho, Inês, Castanheira, Isabel, Bandarra, Narcisa M., Cardoso, Carlos
Format: Article
Language:English
Subjects:
Algae
Bioavailability
Chemical composition
Culinary treatment
dietary advice
essential elements
Iodine
Manganese
Nickel
Rehydration
seaweed
Seaweeds
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Summary:Summary The elemental composition and bioaccessibility of the Azorean macroalgae Petalonia binghamiae, Osmundea pinnatifida and Halopteris scoparia were studied. H. scoparia had the highest Cr, Mn, Co and Ni contents. Iodine content was also the highest in H. scoparia, 1098 ± 54 mg kg dw−1. Content reductions due to rehydration were in the 75%–90% range. Steaming led to similar reductions with exception of Cr, Mn, Co, Ni and Zn in O. pinnatifida. For P. binghamiae and O. pinnatifida, bioaccessibility percentages varied between elements. Variation due to rehydration and culinary treatment was narrower, particularly for P. binghamiae. Whereas I bioaccessibility was low in O. pinnatifida, 11%–14%, it reached 57%–69% in P. binghamiae. On the basis of bioaccessibility, to meet the I DRI, 2.7 g dried P. binghamiae, 16.9–23.8 g rehydrated P. binghamiae and 12.7 g steamed P. binghamiae everyday are required. For O. pinnatifida, 5.0 g, 19.0–33.3 g and 12.9 g of dried, rehydrated and steamed red seaweed, respectively, are needed. Experimental design of the study conducted on the three Azorean macroalgae.
ISSN:0950-5423
1365-2621
DOI:10.1111/ijfs.14647