3.3.1. GC–MS analysis of ZEO
The results of GC–MS analysis of ZEO showed that the major constituents of ZEO were carvacrol (59.17%) and linalool (23.67%) (Bazargani-Gilani et al., 2014). Other researchers reported that thymol was the most abundant component in ZEO (Saei-Dehkordi et al., 2010).