Leaves (QL) were harvested
after 90 days of growth and dried at 50 C for 12 h in labour
oven. Dried material was powdered using laboratory mill (POLYMIX-
Micro-Hammermill MFC, Kinematica. AG, Littau/Lucerne,
Switzerland) and sieved to 0.25 mm by using a laboratory screen
Thyr 2 (Saskia, Essen, Germany)