Botanical Profile
In trade, Spirulina refers to biomass from Arthrospira species; taxonomically, these organisms belong to the family Microcoleaceae.
In a commercial context, Spirulina usually refers to biomass from Arthrospira species, particularly Arthrospira platensis. It is not a flowering plant but a filamentous cyanobacterium with spiral trichomes, major importance in cultivation, and a composition characterised by proteins, phycocyanin, chlorophyll and carotenoids.
Botanically, Spirulina is not a plant profile in the strict sense, but a trade and raw-material name for certain filamentous cyanobacteria, especially Arthrospira platensis and Arthrospira maxima. Historically, the name Spirulina was widely used even though the commercially utilised organisms are now generally assigned taxonomically to the genus Arthrospira.
Arthrospira platensis forms microscopically visible, unbranched, spirally coiled trichomes. The cells are photosynthetically active and contain chlorophyll a as well as accessory pigments. The organisms occur naturally in alkaline, mineral-rich waters, often in warm regions.
Phytochemistry
The composition of Arthrospira biomass differs markedly from that of higher plants. Proteins, pigments, polysaccharides, lipids, minerals and cellular biomass components are central. Spirulina biomass is rich in protein; its exact composition depends on cultivation conditions, light, nutrient medium, harvest time and drying.
Phycocyanin is particularly characteristic. This blue phycobiliprotein functions as an accessory photosynthetic pigment. Together with chlorophyll a and carotenoids, it produces the intense blue-green colour. Carotenoids such as beta-carotene and zeaxanthin may also occur.
In addition to proteins and pigments, Arthrospira contains various lipids, including variable amounts of gamma-linolenic acid. Carbohydrates and polysaccharide fractions have also been described. Modern analytical methods include protein determination, pigment analysis, HPLC, spectrophotometry, fatty-acid analysis and microbiological testing.
Traditional Uses
The traditional use of Arthrospira biomass is not a classic chapter of European herbalism but belongs to ethnobiology and the history of nutrition. The use of cyanobacterial biomass from alkaline lakes is historically documented in certain regions of Africa, particularly around Lake Chad. Historical reports from Mesoamerica also describe the collection of blue-green biomass from lakes.
These uses show that microbial photosynthetic biomass was recognised and utilised in some cultures long before modern biotechnology. Traditional use, however, was regionally limited and closely linked to specific aquatic ecosystems.
In Europe, Spirulina became known primarily during the 20th century. Its modern popularisation is associated with microbiology, discussions on global nutrition, space and sustainability research, and protein-rich biomass. The term Spirulina remained established as a trade name even though Arthrospira is taxonomically more precise.
Current Research
Modern research on Arthrospira platensis and related Spirulina raw materials is strongly biotechnology-oriented. Key topics include cultivation, light management, photobioreactors, open raceway ponds, nutrient media, biomass productivity, pigment stability and raw-material safety. Studies show that light quality, pH, temperature, nitrogen source and harvest time can substantially influence biomass composition.
Phycocyanin is an important research focus. This pigment is studied analytically, technologically and from a raw-material perspective because of its relevance to colour, quality assessment and technical applications.
Quality assurance must take account of foreign algae, other cyanobacteria, heavy metals, microbiological contamination and toxin risks. Taxonomically, the distinction between Spirulina as a trade name and Arthrospira as the scientific genus remains important. A botanical-scientific WestExtract profile should make clear that the material is cyanobacterial biomass rather than a conventional plant.
Sources
- Taxonomic literature on Arthrospira and Spirulina.
- FAO documentation on microalgal and cyanobacterial biomass.
- PubMed-indexed literature on Arthrospira platensis.
- Scientific literature on phycocyanin, chlorophyll and carotenoids in Arthrospira.
- Scientific literature on photobioreactors and the cultivation of cyanobacterial biomass.
- Standard references on cyanobacterial systematics and algal biotechnology.
Notice
The information presented in this botanical profile has been compiled to the best of our knowledge and belief from botanical, phytochemical, historical and scientific sources. It is intended solely for general professional information and initial orientation.
The content does not constitute an assurance of specific properties, effects, qualities or possible uses of products or extracts. In particular, it does not constitute a guarantee, a statement of suitability, or a statement regarding marketability, permissibility or usability in specific applications or markets.
Assessment of the suitability of a raw material or extract for a particular intended use, as well as compliance with all applicable legal and regulatory requirements, is the sole responsibility of the respective user.
Notice
The information presented in this botanical profile has been compiled to the best of our knowledge and belief from botanical, phytochemical, historical and scientific sources. It is intended solely for general professional information and initial orientation.
The content does not constitute any assurance of specific properties, effects, qualities or possible uses of products or extracts. In particular, it does not constitute a guarantee, a statement of suitability, or any statement regarding marketability, regulatory permissibility or usability in specific applications or markets.
Assessment of the suitability of a raw material or extract for a specific intended use, as well as compliance with all applicable legal and regulatory requirements, is the sole responsibility of the respective user.