Sun drying
sun drying, the leaves will be placed on an aluminium tray and kept under direct sunlight for about 27-30 h of daylight.
Freeze drying
Freeze drying process, the samples will be freeze-dried for 24 h.
Microwave drying
Microwave drying, the leaves will be dried in a microwave at the power of 1100 W for 5 min and after that the leaves will be continued for drying at room temperature for 24 h.
Ambient shade drying
Ambient shade drying, the samples will be placed on a tray and dried at ambient temperature under the dark conditions.