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Alimentation végétale

Spirulina

A microalga superfood providing complete protein, B vitamins, and chlorophyll in concentrated form.

Definition

Blue-green microalga rich in complete protein, B vitamins, and phytonutrients, cultivated in freshwater for nutritional supplementation.

How it works

Spirulina is a biomass of cyanobacteria (blue-green microalgae) cultivated in alkaline freshwater environments and dried into powder or tablet form. It contains approximately 60-70% protein by dry weight, making it one of the most protein-dense foods available. Spirulina provides all essential amino acids, qualifying as a complete protein source particularly valuable for vegans and vegetarians. Beyond protein, spirulina contains abundant B vitamins including B12 (crucial for plant-based diets), beta-carotene, iron, and phycocyanin—a powerful antioxidant and anti-inflammatory compound. Its concentrated nutrient profile makes it popular as a supplemental food rather than a staple.

Role

Delivers concentrated plant-based complete protein, supports immune function through phytonutrients, and addresses B12 deficiency in plant-based diets.

Examples

  • Spirulina powder
  • Spirulina tablets
  • Spirulina in smoothies
  • Spirulina in energy bars

Recommendations

Begin with 1-2 teaspoons of spirulina powder daily, gradually increasing to 1-2 tablespoons as tolerance develops, as it can cause digestive adjustment. Mix into smoothies, plant-based yogurts, or juice to mask the strong algae flavor. Source from certified suppliers ensuring quality testing and proper cultivation conditions.

Key takeaway

Spirulina is a nutrient-concentrated microalga offering complete protein and essential vitamins, particularly valuable for supporting plant-based nutrition.

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