In the rainy season, plant 1 presented carvacrol as the main compound (71.9 %) and a lower content of p-cymene
(18.4 %), when compared to the dry season.
,g-terpinene and other antioxidant contents may justify its nephroprotective and therapeutic properties.
The activity of some EOs, such as those with p-cymene
, thymol, and citral at high concentrations, is associated with their capacity to cause structural and functional changes in the cytoplasmic membrane, resulting in the reduction of membrane potential and the loss of ATP and ions, in addition to possible interactions with intracellular targets.
was the major component in the studied species of E.
Our results are in agreement with those obtained by Skocibusic and Bezic 2004  that identified carvacrol (45.7%) as the major component followed by the monoterpenic hydrocarbons p-cymene
(12.6%), [gamma]-terpinene (8.1%), borneol, thymol, and thymol methyl ether.
The composition of EOLs determined by this method were: thymol (66.00%), p-Cymene
(15.01%), caryophyllene (4.60%), myrcene (4.23%), gamma-terpinene (1.87%), thymylethyl-ether (1.15%), and alfa-terpinene (1.01%).
Cavalcanti et al., "P-Cymene
reduces orofacial nociceptive response in mice," Revista Brasileira de Farmacognosia, vol.
Comparing the EOPh composition with literature data, it was noticed that, generally, phellandrenes, terpinolenes, limonenes, oxidized p-menth-3-ene-1,2,8-triol, and aromatized p-cymene
are major constituents of the essential oil of P.
The most dominant constituents of the ground seeds were observed hierarchically to be p-cymene
, 2-thujene, thymoquinone, longifolene, carvacrol, and carvone.
Other compounds detected in the oregano oil included p-cymene
(8.5%) and [gamma]-terpinene (6.4%).
Therefore, the objective of the present study was to evaluate the effects of 11 ACEO (eugenol, carvacrol, citral, limonene, 1,4-cineole, p-cymene
, linalool, bornyl acetate, [alpha]-pinene, and [beta]-pinene) on rumen fermentation and methane production.
The base gasoline was obtained from a local supplier, and oxygenates were obtained as reagent grade chemicals, p-Xylene (1,4-dimethylbenzene) and p-cymene
(1-methyl, 4-isopropylbenzene) were used to increase the base gasoline RON and PMI without adding oxygen.