umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Cryogenic X-ray photoelectron spectroscopy determines surface composition of algal cells and gives insights into their spontaneous sedimentation
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.ORCID iD: 0000-0003-2646-8501
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2020 (English)In: Algal Research, ISSN 2211-9264, Vol. 47, article id 101836Article in journal (Refereed) Published
Abstract [en]

The flotation properties of two green microalgal species isolated from Northern Sweden, Chlorella vulgaris 13-1 and Coelastrella sp. 3-4, were investigated. C. vulgaris 13-1 is a flotating alga that remains suspended in solution during culturing, while Coelastrella sp. 3-4 is readily sedimenting in the stationary growth phase. We were the first to use cryogenic X-ray photoelectron spectroscopy (Cryo-XPS) to gain information on the chemical composition of the algal cell surface and added to these data results obtained from diffuse reflectance - Fourier Transform infrared spectroscopy (DR-FTIR) and classical chemical extractions of carbohydrates, lipids and proteins. Based on the Cryo-XPS data the surface of the sedimenting Coelastrella sp. 3-4 strain is rich in proteins and lipids, while the cell surface of non-flocculating C. vulgaris 13-1 is predominated by carbohydrates, but is poor in lipids. The Zeta-potential of both strains was equally negative. Cell size and the amount of carbohydrates on the algal cell surface, but not the negative surface charge, therefore indicate colloidal stability of microalgae in solutions and can be applied to predict flotation properties of green microalgae.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 47, article id 101836
Keywords [en]
Microalgae, Flotation properties, Electrophoretic mobility, Cryo-XPS, DR-FTIR
National Category
Other Chemistry Topics Physical Chemistry Materials Chemistry Biophysics Food Engineering
Identifiers
URN: urn:nbn:se:umu:diva-168404DOI: 10.1016/j.algal.2020.101836OAI: oai:DiVA.org:umu-168404DiVA, id: diva2:1395596
Projects
Bio4EnergyAvailable from: 2020-02-24 Created: 2020-02-24 Last updated: 2020-02-24Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Gojkovic, ZivanShchukarev, AndreyRamstedt, MadeleineFunk, Christiane

Search in DiVA

By author/editor
Gojkovic, ZivanShchukarev, AndreyRamstedt, MadeleineFunk, Christiane
By organisation
Department of Chemistry
In the same journal
Algal Research
Other Chemistry TopicsPhysical ChemistryMaterials ChemistryBiophysicsFood Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 79 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf