Materials and methods
2.1. Collection of plant material
Leaves of Z. clinopodioides species were collected from the
Gilane Gharb region, Kermanshah province, west of Iran. After
confirming the herbarium specimen, voucher number of the
collected plant (6816) was deposited in the herbarium of the
Research Center of Natural Resources of Tehran, Iran. Commercial
GSE powder was purchased from Gol Adonis Daru Ltd. (Tehran,
Iran