Marine bacteria associated with the green seaweed Ulva sp. for the production of polyhydroxyalkanoates

Rima Gnaim, Mark Polikovsky, Razan Unis, Julia Sheviryov, Michael Gozin, Alexander Golberg

Research output: Contribution to journalArticlepeer-review

Abstract

This work aimed to isolate a series of bacterial strains associated with the green seaweed Ulva sp. and evaluate their capability to manufacture PHA. The effect of the type of supplemented sugars found to be in macroalgae, on the growth and PHA productivity of the strains was studied. Analysis of the 16S rRNA gene sequence of the isolated strains revealed that the PHA-producing bacteria were phylogenetically related to the genus Cobetia, Bacillus, Pseudoaltermonas and Sulfitobacter, which showed high PHA contents among the isolates. The highest PHA content was observed in the case of Cobetia strain, with up to 61% w/w in the presence of mannitol and 12% w/w on Ulva sp. acid hydrolysate as a substrate.

Original languageEnglish
Article number124815
JournalBioresource Technology
Volume328
DOIs
StatePublished - May 2021

Keywords

  • Fermentation
  • Green macro-algae
  • Marine Bacteria
  • Poly(3-hydroxybutyrate) (P3HB)
  • Polyhydroxyalkanoate (PHA)
  • Ulva sp. hydrolysate

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