Exploring the Diversity of Red Microalgae for Exopolysaccharide Production - Université Clermont Auvergne Access content directly
Journal Articles Marine drugs Year : 2022

Exploring the Diversity of Red Microalgae for Exopolysaccharide Production

Aldo Daniel Borjas Esqueda
  • Function : Author
  • PersonId : 1131800
Christine Gardarin
  • Function : Author
  • PersonId : 1038517
Céline Laroche


Microalgae constitute a remarkable biological diversity but a limited number of them have been the object of study for their ability to produce exoplysaccharides (EPS). Among them, the red marine microalgae Porphyridium or Rhodella produce sulphated EPS, exhibiting some biological activities with potential interest in the pharmaceutical and cosmetic industries. EPS from Porphyridium and Rhodella being relatively similar in their composition, it has long been considered that all the red microalgae produced similar EPS and no attention was paid to other red microalgae. The objective of our work was then to explore the diversity of red microalgae for the production of EPS, focusing in this first step on the screening of the strains for their ability to produce EPS and preliminary structural characterization. The study was conducted with 11 microalgae strains belonging to the proteorhodophytina subphylum. All microalgae were able to produce EPS, released in the culture medium (strains belonging to Porphyridiophyceae and Rhodellophyceae classes) or remaining bound to the cells (strains from Stylonematophyceae class). The analysis of monosaccharides composition was found significantly different, with for instance high levels of glucuronic acids in the EPS from C. japonica and N. cyanea, but also strong differences in the sulphation degrees of polymers (between 1.2 and 28.7% eq. SO4).
Fichier principal
Vignette du fichier
Laroche C. Borjas2022 EDITEUR OA.pdf (15.28 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03632144 , version 1 (06-04-2022)





Aldo Daniel Borjas Esqueda, Christine Gardarin, Céline Laroche. Exploring the Diversity of Red Microalgae for Exopolysaccharide Production. Marine drugs, 2022, 20 (4), pp.246. ⟨10.3390/md20040246⟩. ⟨hal-03632144⟩
72 View
46 Download



Gmail Facebook X LinkedIn More