“…The majority of the paper identified the components of D. ambrosioides EO are oxygenated monoterpenes. In several studies ( Gupta et al, 2002 ; Boutkhil et al, 2009 ; Brahim et al, 2015 ; Bisht and Kumar, 2019 ), α-terpinene (5) was quantified as the main constituent in D. ambrosioides EO, while ascaridole (29) was reported as the most abundant components in D. multifida EO ( Yossen et al, 2019 ). Less frequently, δ-3-carene (10) , limonene (4) , thymol (20) , carvacrol (19) , γ-terpinene (6) , α-terpinolene (7) , piperitone oxide (31) , geraniol (15) , α-pinene (12) , β-pinene (26) , iso-ascaridole (20) , β-myrcene (1) , α-ocimene (2) , β-ocimene (3) , citronellyl acetate (21) , β-phellandrene (8) , dihydroascaridole (32) , trans -pinocarveol (17) , carvone (24) , piperitone (23) were reported in D. multifida and D. ambrosioides EO ( Arena et al, 2018 ), while p -cymene (9) , and 4-carene (11) were reported as main components of D. ambrosioides EO in another study ( Zefzoufi et al, 2020 ).…”