Cultivation conditions affect the monosaccharide composition in Ulva fenestrata
Artikel i vetenskaplig tidskrift, 2020

In recent years, the interest in using seaweed for the sustainable production of commodities has been increasing as seaweeds contain many potentially worthwhile compounds. Thus, the extraction and refining processes of interesting compounds from seaweeds is a hot research topic but has been found to have problems with profitability for novel applications. To increase the economic potential of refining seaweed biomass, the content of the compounds of interest should be maximized, which can potentially be achieved through optimization of cultivation conditions. In this study, we studied how the monosaccharide composition of the green seaweed species Ulva fenestrata is influenced by the abiotic factors; irradiance, temperature, nitrate, phosphate, and pCO2. It was evident that lower nitrate concentration and cultivation at elevated temperature increased monosaccharide contents. A 70% increase in iduronic acid and a 26% increase in rhamnose content were seen under elevated irradiance and temperature conditions, though the absolute differences in monosaccharide concentration were small. Irradiance and nitrate impacted the ratio between iduronic and rhamnose, which is an indicator of the ulvan structure. These results could potentially be utilized to coax the ulvan towards specific bioactivities, and thus have a considerable impact on a potential biorefinery centered around Ulva. © 2020, The Author(s).

Cultivation

Abiotic growth factors

Monosaccharides composition

Ulvan

Ulva fenestrata

Författare

Joakim Olsson

Chalmers, Biologi och bioteknik, Industriell bioteknik

Gunilla B. Toth

Göteborgs universitet

Annelous Oerbekke

Göteborgs universitet

Suzana Cvijetinovic

Chalmers, Biologi och bioteknik, Industriell bioteknik

Niklas Wahlström

Kungliga Tekniska Högskolan (KTH)

Hanna Harrysson

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Sophie Steinhagen

Göteborgs universitet

Alexandra Kinnby

Göteborgs universitet

Joel White

Göteborgs universitet

Ulrica Edlund

Kungliga Tekniska Högskolan (KTH)

Ingrid Undeland

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Henrik Pavia

Göteborgs universitet

Eva Albers

Utbildningsstöd

Journal of Applied Phycology

0921-8971 (ISSN) 1573-5176 (eISSN)

Vol. In Press

Produktionssystem för alger med högvärdiga tillämpningar

Stiftelsen för Strategisk forskning (SSF), 2015-01-01 -- 2019-12-31.

Ämneskategorier

Kemiska processer

Annan kemiteknik

Bioenergi

DOI

10.1007/s10811-020-02138-9

Mer information

Senast uppdaterat

2020-07-01