**2. Results**

#### *2.1. Compositional Analysis*

The constituents identified from *O. vulgare* EO and GR-OLI, their linear retention indices (LRIs), and their percent composition are reported in Table 1. Specifically, the EO of *O. vulgare* is composed of 66.98% carvacrol, while the GR-OLI mixture is characterized by four major compounds with concentrations greater than 10% (limonene 15.32%, carvacrol 12.50%, 1–8 cineol 11.95%, and p-cymene 10.62%).


**Table 1.** Chemical composition and LRIs of natural compounds.
