Cited by 10Spectroscopy Techniques in Biomedical and Chemical ResearchSpectroscopy and Chemometric AnalysesMarine and coastal ecosystems

Spectroscopic analyses of chemical adaptation processes within microalgal biomass in response to changing environments

Vogt, Frank, White, Lauren·2015·Analytica Chimica Acta

Abstract

Via photosynthesis, marine phytoplankton transforms large quantities of inorganic compounds into biomass. This has considerable environmental impacts as microalgae contribute for instance to counter-balancing anthropogenic releases of the greenhouse gas CO2. On the other hand, high concentrations of nitrogen compounds in an ecosystem can lead to harmful algae blooms. In previous investigations it was found that the chemical composition of microalgal biomass is strongly dependent on the nutrient availability. Therefore, it is expected that algae's sequestration capabilities and productivity are also determined by the cells' chemical environments. For investigating this hypothesis, novel analytical methodologies are required which are capable of monitoring live cells exposed to chemically shifting environments followed by chemometric modeling of their chemical adaptation dynamics. FTIR-ATR experiments have been developed for acquiring spectroscopic time series of live Dunaliella parva cultures adapting to different nutrient situations. Comparing experimental data from acclimated cultures to those exposed to a chemically shifted nutrient situation reveals insights in which analyte groups participate in modifications of microalgal biomass and on what time scales. For a chemometric description of these processes, a data model has been deduced which explains the chemical adaptation dynamics explicitly rather than empirically. First results show that this approach is feasible and derives information about the chemical biomass adaptations. Future investigations will utilize these instrumental and chemometric methodologies for quantitative investigations of the relation between chemical environments and microalgal sequestration capabilities.

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Crossref · 10.1016/j.aca.2015.02.005

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Authors
Vogt, F., & White, L.
Affiliations
University of Tennessee at Knoxville (US)
Corresponding author
Vogt, Frank
Venue
Analytica Chimica Acta
Publisher
Elsevier BV
Published
2015-03
Volume
867
Pages
18-28
ISSN
0003-2670 (ISSN-L)
OpenAlex
W2074632309
Cited by
10
References
40
Citations by year
2021: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 3
FWCI
1.41
Type
journal article
Language
en
Open access
closed
Locations
  • Analytica Chimica Acta (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (CHE-1058695, CHE-1112269)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
microalgal biomass, Dunaliella parva, nutrient availability, FTIR spectroscopy, live cell monitoring, chemometric models, harmful algal blooms, CO2 sequestration, microalgae productivity, time-series spectroscopy
MeSH terms
Adaptation, Physiological, Chromatography, High Pressure Liquid, Models, Biological, Photosynthesis, Least-Squares Analysis, Volvocida, Spectroscopy, Fourier Transform Infrared, Nonlinear Dynamics, Biomass, Microalgae

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