Haematococcus pluvialis is the name of the microalgae that Heinz Schelwat cultivates in Trappenkamp,  Schleswig-Holstein.
When this green freshwater alga comes under stress, it turns bright red and produces the active ingredient astaxanthin - an active ingredient that is considered the most powerful free radical scavenger. Many positive effects are attributed to it.

Heinz Schelwat produces the purest astaxanthin in a closed system, but his pills are not yet freely available. For the time being, Schelwat is only making them available to science so that the medical effects of this substance, for example against macula degeneration, can be further investigated. 

This podcast also is available in German version:
Technik und Meer - Faszination Meerestechnik
Grünes Gold: Mikroalgen gezüchtet in Schleswig-Holstein

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