Microalgae are single-cell or multicellular algae with numerous vitamins and nutrients having existed for billions of years, and are therefore among the oldest living organisms in the world. Microalgae grow worldwide in salt and fresh water as well as on wet walls and can be cultivated. Since microalgae have neither roots nor leaves, they use the sun’s energy to produce bioactive nutrients.
Microalgae produce around 50% of the atmosphere’s oxygen and at the same time use the greenhouse gas carbon dioxide to grow photoautotrophically. The organic all-rounders produce a variety of high-quality substances such as vitamins and colour pigments, essential fatty acids and amino acids as well as antibiotics and pharmaceutically active substances. The most important microalgae families are Spirulina platensis and Chlorella vulgaris.