The effect of drying process on undervalued brown and red seaweed species: elemental composition

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Afonso, C (Author) Other; Juliao, DR (Author) Other; Pinto, E (Author) Other; Agostinho Almeida (Author) FFUP; Ferreira, IMPLVO (Author) Other; Bandarra, NM (Author) Other; Cardoso, C (Author) Other

Journal

Title: Journal of Applied Phycology

Vol. 34

Pages: 1749-1761

ISSN: 0921-8971

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 1 Citation

Scopus

Other information

Authenticus ID: P-00W-FPB

DOI: 10.1007/s10811-022-02741-y

Abstract (EN): The influence of drying (sun-drying and shade-drying) on the elemental composition of two brown seaweeds (Treptacantha abies-marina, Cystoseira humilis) and two red seaweed species (Asparagopsis armata and Asparagopsis taxiformis) harvested in the Faial Island (Azores Islands, Portugal) was assessed. The contents of sixteen nutritionally and toxicologically relevant elements were determined: sodium (Na), magnesium (Mg), phosphorus (P), sulphur (S), potassium (K), calcium (Ca), chromium (Cr), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), arsenic (As), bromine (Br), cadmium (Cd), iodine (I), and lead (Pb). While the most abundant macroelement in T abies-marina and C. humilis was K (64.1-71.0 g kg(-1) dw), for both Asparagopsis species, this position was held by Na (85.6-115.3 g kg(-1) dw). Iodine content did not surpass 0.1 g kg(-1) dw in the brown seaweeds and varied between 4.6 and 5.7 g kg(-1) dw in Asparagopsis species. The I Dietary Reference Intake may be ensured by less than 1 g of dried A. armata or A. taxiformis per week. For T abies-marina and C. humilis, 10.5 g or more of dried seaweed per week may be required. However, excessive I can be a health risk: 1-2 g of dried A. armata or A. taxiformis per week may result in I-related health risks. Moreover, there are As-related health risks for the consumption of C. humilis and, especially, T abies-marina. The type of drying did not show a clear effect upon the elemental composition.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13