Synergistic enhancement of glycogen production in Arthrospira platensis by optimization of light intensity and nitrate supply
Abstract
Arthrospira (Spirulina) platensis, a fast-growing halophilic cyanobacterium able to accumulate glycogen, was investigated for its feasibility to serve as feedstock for fermentative production of biofuels and chemicals. The culture conditions most appropriate for glycogen production were identified. Glycogen production was maximized by the depleting nitrate source under a high light intensity of 700 μmol photons m(-2) s(-1). With optimal control of both light intensity and nitrate supply, glycogen production of A. platensis reached nearly 1.03 g L(-1) (a glycogen productivity of 0.29 g L(-1) d(-1)), which is, to the best of our knowledge, the highest α-polyglucan (glycogen or starch) production performance ever reported in microalgae. The outcome of this work supports A. platensis as a promising carbohydrate source for biorefinery.
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Complete nitrogen starvation is not required for glycogen accumulation; 3 mM nitrate stimulated glycogen accumulation.
“Interestingly, Aikawa et al. [61] demonstrated that complete nitrogen starvation is not required, as glycogen accumulation was stimulated by using 3 mM of nitrate.”
From Arthrospira platensis as a Feasible Feedstock for Bioethanol Production (2021) · cites this paper as [61]
At 700 μmol photons m−2 s−1, glycogen reached up to 50% DW.
“However, for higher light intensity (700 μmol photons m -2 s -1 ), the amount of glycogen reached up to 50% of cell dry weight.”
From Arthrospira platensis as a Feasible Feedstock for Bioethanol Production (2021) · cites this paper as [61]
At 50 and 270 μmol photons m−2 s−1, glycogen content of A. platensis increased from 18% to 40% DW after 12 h and decreased to initial contents after three days.
“Regarding the glycogen accumulation, a similar tendency was observed at 50 and 270 μmol photons m -2 s -1 as glycogen content increased from 18% to 40% of cell dry weight after 12 h and decreased to the initial contents after three days.”
From Arthrospira platensis as a Feasible Feedstock for Bioethanol Production (2021) · cites this paper as [61]
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References 27 · Cited by 136
- Authors
- Aikawa, S., Izumi, Y., Matsuda, F., Hasunuma, T., Chang, J.-S., & Kondo, A.
- Affiliations
- Japan Science and Technology Agency (JP)
- National Cheng Kung University Hospital (TW)
- Corresponding author
- Kondo, Akihiko
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2012-03
- Volume
- 108
- Pages
- 211-215
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2054195433
- Cited by
- 136
- References
- 27
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 8 · 2023: 4 · 2022: 7 · 2021: 14 · 2020: 8 · 2019: 16 · 2018: 11 · 2017: 12 · 2016: 7 · 2015: 12 · 2014: 10 · 2013: 13 · 2012: 6
- FWCI
- 5.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Core Research for Evolutional Science and Technology (CREST) of Promoting Globalization on Strategic Basic Research Programs of the Japan Science and Technology Agency
- top university project of NCKU
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Keywords
- Spirulina platensis, Spirulina, glycogen synthesis, light intensity, nitrate availability, cyanobacteria, biofuel feedstock, biorefinery, culture condition optimization
- MeSH terms
- Chromatography, High Pressure Liquid, Glycogen, Industrial Microbiology, Light, Nephelometry and Turbidimetry, Nitrates, Spirulina, Biofuels
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