Extraction, Characterization, Biological Properties, and X-Ray Fluorescence Analysis of Functional Polysaccharides Derived from Limnospira platensis

Summary

Spirulina (Limnospira platensis) is a nutrient-dense microalga that contains beneficial polysaccharides with multiple health benefits. Researchers extracted and analyzed these polysaccharides, finding they have strong antioxidant properties and can help regulate blood sugar levels by inhibiting α-glucosidase enzymes. These compounds also support beneficial gut bacteria growth, making spirulina a promising natural ingredient for functional foods and health supplements.

Background

Limnospira platensis (Spirulina) is a microalga known for its rich nutritional content and bioactive compounds. High-molecular-weight polysaccharides from this source have demonstrated immunomodulatory, anti-inflammatory, and anticancer effects, making it a valuable functional food and medicinal resource.

Objective

This study explored the extraction, characterization, and biological properties of polysaccharides derived from Limnospira platensis using optimized biorefinery water extraction techniques. The research aimed to detail structural and functional characteristics and assess elemental composition through X-ray fluorescence analysis.

Results

Polysaccharide concentration ranged from 0.07 to 2.48 mg/mL with extraction yields of 1.56 to 54.62 mg/g. Notable antioxidant activity and effective α-glucosidase inhibition were demonstrated. Major monosaccharides detected were glucose (63.27 mg/g), rhamnose (21.99 mg/g), and galactose (16.14 mg/g). XRF analysis identified potassium (55.99%) and sulfur (25.41%) as predominant elements in the polysaccharide powder.

Conclusion

Polysaccharides from Limnospira platensis show promising applications as functional ingredients in health-related fields due to their antioxidant, antidiabetic, and prebiotic properties. The findings underscore the importance of optimized extraction methods and warrant further research into their mechanisms of action and therapeutic applications.
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