Abstract
Two samples of Pogostemon benghalensis Burm. F. collected from different altitudes of the Kumaon region of Uttarakhand have been analyzed by GC and GC-MS. The inflorescence oil of sample I contained β-bisabolene (18%), (E)-β-ocimene (3.7%), and 1-octen-3-ol (2.7%), but the leaf oil showed a high elemol content (20.5%), along with β-caryophyllene (12.5%), β-copaen-4α-ol (7.7%), α-humulene (4%), and linalool (2.1%). In contrast, the inflorescence oil of sample II possessed β-caryophyllene (15.2%), β-copaen-4α-ol (9.6%), and β-bisabolene (8%), while (E)-β-ocimene (5.2%), elemol (4%), α-guaiene (3.8%), and humulene epoxide II (2.4%) were found in the leaf essential oil. Elemol, β-copaen-4α-ol, (Z)- and (E)-β-ocimene are being reported for the first time from this species.