**2.1 Materials and methods**

### **2.1.1 Plant material**

The aerial parts of *Clinopodium vulgare, Aegopodium podagraria, Torilis anthriscus, Dorycnium pentaphyllum, Melilotus albus, Cytisus nigricans* and *Cytisus capitatus* were collected from the different regions of Serbia, during summer 2006 and 2009 while *Cichorium intybus* (root), *Salvia officinalis* (leaves) and *Melissa officinalis* (leaves) were supplied from the commercial source. Identification and classification of the plant material was performed at the Faculty of Science, University of Kragujevac. The voucher specimens of the plants are deposited in the Herbarium of the Faculty of Science, University of Kragujevac. The collected plant materials were air-dried under shade at room temperature and then ground into small pieces which were stored into paper bags at room temperature.
