“…The genus Pinus exhibits a taxonomical variety of about 115 species and occurs mainly in the northern hemisphere [ 1 , 2 , 3 , 4 ]. Needles and twigs are source of pine essential oils (EOs), used to treat respiratory infections based on their antibacterial, anti-inflammatory, expectorant and analgesic potential [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. EOs are mixtures of natural complex substances mainly categorized into monoterpenes, sesquiterpenes and their oxygenated derivatives and are synthesized as secondary metabolites [ 15 ].…”