This presentation describes research on the effects of temperature during drying and storage of Artemisia annua, in particular the effects on the artemisinin content. It is concluded that: temperatures above 30 or 40°C should not be used (30°C should not be exceeded for long-term storage); there is no interaction between leaf moisture content and drying temperature; damage to leaf structure should be avoided; a low drying temperature (e.g. 20°C) is not a problem; and powdered leaves are very sensitive even to low temperatures.
Presentation from Artemisinin Forum 2008 – Joint meeting on ensuring sustainable artemisinin production: meeting global demand. Guilin, China, 24-26 November 2008.