Cited by 179Spectroscopy and Chemometric AnalysesAlgal biology and biofuel productionSpectroscopy Techniques in Biomedical and Chemical Research

Rapid determination of bulk microalgal biochemical composition by Fourier-Transform Infrared spectroscopy

Mayers, Joshua J., Flynn, Kevin J., Shields, Robin J.·2013·Bioresource Technology

Abstract

Analysis of bulk biochemical composition is a key in fundamental and applied studies of microalgae and is essential to understanding responses to different cultivation scenarios. Traditional biochemical methods for the quantification of lipids, carbohydrates and proteins are often time-consuming, often involve hazardous reagents, require significant amounts of biomass and are highly dependent on practitioner proficiency. This study presents a rapid and non-destructive method, utilising Fourier-Transform Infrared (FTIR) spectroscopy for the simultaneous determination of lipid, protein and carbohydrate content in microalgal biomass. A simple univariate regression was applied to sets of reference microalgal spectra of known composition and recognised IR peak integrals. A robust single-species model was constructed, with coefficients of determination r(2)>0.95, high predictive accuracy and relative errors below 5%. The applicability of this methodology is demonstrated by monitoring the time-resolved changes in biochemical composition of the marine alga Nannochloropsis sp. grown to nitrogen starvation.

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Authors
Mayers, J. J., Flynn, K. J., & Shields, R. J.
Affiliations
Swansea University (GB)
Corresponding author
Flynn, Kevin J.
Venue
Bioresource Technology
Publisher
Elsevier BV
Published
2013-11
Volume
148
Pages
215-220
ISSN
0960-8524 (ISSN-L)
OpenAlex
W1965058293
Cited by
179
References
37
Citations by year
2026: 9 · 2025: 12 · 2024: 14 · 2023: 17 · 2022: 10 · 2021: 27 · 2020: 18 · 2019: 23 · 2018: 8 · 2017: 13 · 2016: 15 · 2015: 6 · 2014: 7
FWCI
8.88
Type
journal article
Language
en
Open access
closed
Locations
  • Bioresource Technology (publishedVersion)
  • PubMed (publishedVersion)
  • Chalmers Publication Library (Chalmers University of Technology) (submittedVersion)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
Topics
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Spectroscopy Techniques in Biomedical and Chemical Research
Keywords
microalgal biomass, biochemical composition, lipid content, protein content, carbohydrate content, FTIR spectroscopy, non-destructive analysis, univariate regression, Nannochloropsis, nitrogen starvation
MeSH terms
Absorption, Carbohydrates, Carbon, Lipids, Models, Theoretical, Nitrogen, Proteins, Reference Standards, Time Factors, Spectroscopy, Fourier Transform Infrared, Biomass, Microalgae, Batch Cell Culture Techniques

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