Nutritional and toxicological characteristics of Saccharina latissima, Ulva fenestrata, Ulva intestinalis, and Ulva rigida: a review

Abstract

Nutrient and toxicant levels as well as their bioavailability in S. latissima and Ulva species (fenestrata, intestinalis, rigida) were reviewed. Nutritional quality was assessed by nutrient contribution to daily reference intake (DRI) per portion (5 g dry weight), nutrient density score NRF21.3, and comparisons to reference foods. Toxicological assessments comprised tolerable daily intake (TDI)-levels. Based on mean %DRI per portion, S. latissima and Ulva species were good sources (%DRI >15) of calcium, magnesium, iron, selenium, and vitamin B12. Mean %DRI was <10% for fiber, sodium, and protein. Toxicological concerns were mainly due to iodine (mean %TDI per portion: 3160% for S. latissima and 41-91% for Ulva species). Mean %TDIs for inorganic arsenic, cadmium, and lead were <20% for S. latissima and 9-97%, 6-15%, and 21-46%, for the selected Ulva species, respectively. Bioavailability data were scarce and is, together with nutritional impact of processing, an important aspect to address in future studies.

Keywords

Seaweed; macroalgae; bioavailability; nutrient content; elemental composition

Published in

International Journal of Food Properties
2023, volume: 26, number: 1, pages: 2349-2378
Publisher: TAYLOR AND FRANCIS INC

SLU Authors

• Jacobsen, Maria

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    
  • RISE Research Institutes of Sweden

UKÄ Subject classification

Food Science

Publication identifier

• DOI: https://doi.org/10.1080/10942912.2023.2246677

Permanent link to this page (URI)

https://res.slu.se/id/publ/123880