Production of source material
Most qRE reference extracts are prepared from plants grown in our botanical garden. This allows us to monitor every stage of their life-cycle and certify their botanical identity with confidence. Tropical and arctic species are provided by reliable professionals, from known sources and locations. All raw material is authenticated on arrival at the laboratory.
The parts of the plants to be extracted are collected at the proper time in their growth cycle to ensure the optimum concentration of their useful compounds.
See botanical garden for more details on how we grow and authenticate our plants.
Production of dry extract
The plants or plant parts are cut and freeze-dried right after collection. The freeze-dried plants are extracted by maceration at room temperature for 48 h in ethanol-water 50 % (v/v) mix (unless specified otherwise in the corresponding Technical Documentation).