Cristin-resultat-ID: 2134534
Sist endret: 3. januar 2024, 13:21
NVI-rapporteringsår: 2023
Resultat
Vitenskapelig artikkel
2023

Sequential extraction and fractionation of four polysaccharides from cultivated brown algae Saccharina latissima and Alaria esculenta

Bidragsytere:
  • Paulina Anna Teresia Sandberg Birgersson
  • Maren Oftebro
  • Wenche Iren Strand
  • Olav Andreas Aarstad
  • Gerd Inger Sætrom
  • Håvard Sletta
  • mfl.

Tidsskrift

Algal Research
ISSN 2211-9264
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2023
Publisert online: 2022
Volum: 69
Artikkelnummer: 102928

Importkilder

Scopus-ID: 2-s2.0-85144532491

Beskrivelse Beskrivelse

Tittel

Sequential extraction and fractionation of four polysaccharides from cultivated brown algae Saccharina latissima and Alaria esculenta

Sammendrag

Norway has a well-established seaweed industry based on extraction of alginates from wild harvested brown algae, Laminaria hyperborea (LH). However, further expansion of wild harvest is limited, and cultivated seaweed can contribute to meeting increasing demands for high value compounds in an environmentally sustainable manner. Herein, an integrated process for retrieving alginate, fucoidan, laminarin and cellulose was established for cultivated Saccharina latissima (SL) and Alaria esculenta (AE). Focus was to develop a process using mild chemical methods that do not compromise the molecular weights (MW) of the polysaccharides, particularly with respect to alginate. Response surface methodology (RSM) was applied to optimize the yield of fucoidan and laminarin and assess the effect of the applied extraction parameters: pH, temperature, and time, on the MW of subsequently extracted alginates. RSM confirmed that high yields of fucoidan and laminarin can be achieved while maintaining the alginate MW. Optimized conditions were applied in a pilot scale process, where all four polysaccharides were extracted. Purity (ranging from 40 up to 98 %) and composition of the components were evaluated combining several analytical techniques. Total yields of the polysaccharides were 23.4 % of the entering dry biomass from SL and 26.3 % from AE, representing around 55 % of the estimated maximal yield. However, all extractions were not optimized, and a mass balance revealed that

Bidragsytere

Paulina Anna Teresia Sandberg Birgersson

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet

Maren Oftebro

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet

Wenche Iren Strand

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet

Olav Andreas Aarstad

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet

Gerd Inger Sætrom

  • Tilknyttet:
    Forfatter
    ved Institutt for bioteknologi og matvitenskap ved Norges teknisk-naturvitenskapelige universitet
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