Effects of Nitrogen and Micronutrients on Spirulina platensis Physiology

Nishant, Shweta, Sheeba and Purushothaman R
Additional contact information
Nishant: PDM University, Haryana
Shweta: Starex University, Gurugram
Sheeba: Manav Rachna International Institute of Research and Studies, Faridabad
Purushothaman R: Annamalai University, Tamil Nadu

International Journal of Research and Scientific Innovation, 2025, vol. 12, issue 7, 866-876

Abstract: Spirulina platensis, a filamentous cyanobacterium, is extensively cultivated for its nutritional value and bioactive compounds. Environmental stressors significantly affect its growth and biochemical composition. This study examines the impact of nitrogen (NaNO₃) and micronutrient (MgSO₄, CaCl₂) stress on biomass production, specific growth rate, and chlorophyll a content in S. platensis. Cultures were grown in modified Zarrouk’s medium with fivefold increased nutrient concentrations. Growth was monitored spectrophotometrically at 565 nm (biomass), 680 nm (chlorophyll-a), and 750 nm (growth rate). Results revealed that NaNO₃ stress reduced growth and pigment accumulation, while MgSO₄ and CaCl₂ stress enhanced both. The highest biomass (0.8851 g/L) was recorded under CaCl₂ stress, and the lowest (0.2754 g/L) under NaNO₃ stress. These findings highlight the potential of micronutrient enrichment in optimizing Spirulina cultivation.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.rsisinternational.org/journals/ijrsi/d ... -issue-7/866-876.pdf (application/pdf)
https://rsisinternational.org/journals/ijrsi/artic ... latensis-physiology/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:bjc:journl:v:12:y:2025:i:67:p:866-876

Access Statistics for this article

International Journal of Research and Scientific Innovation is currently edited by Dr. Renu Malsaria

More articles in International Journal of Research and Scientific Innovation from International Journal of Research and Scientific Innovation (IJRSI)
Bibliographic data for series maintained by Dr. Renu Malsaria ().