process of enrichment of a photosynthetic microorganism in organic selenium, photosynthetic microorganism of organic selenium, chlorophytic and cyanophyte selenium enriched, use of a photosynthetic microorganism, composition and culture medium for photosynthetic microorganism
The invention relates to the enrichment of photosynthetic microorganisms in organic selenium using selenohydroxy acid compounds, in particular 2-hydroxy-4-methylselenobutanoic acid, in D or L form, or an enantiomer, salt or ester or amide derivative of these compounds, and also to the use of the microorganisms thus enriched in animal or human nutrition, in cosmetics or in pharmacy.