The essential oil composition of the aerial parts of Anaphalis nubigena DC. var. monocephala (DC.) C. B. Clarke collected from Pindari glacier at a height of 3300 m, was analyzed by using GC and GC/MS. Sixty components were identified, accounting for 95.9% of the total oil. The main constituents were α-guaiene (12.3%), γ-muurolene (10.4%), γ-cadinene (8.3%), α-muurolol (7.4%), α-gurjunene (6.0%) and α-bulnesene (5.8%). The oil was found to be rich in sesquiterpene hydrocarbons (60.1%). The oil was active against Escherichia coli (NCIM 2065) and Klebsiella pneumoniae (NCIM 2957), with MIC values of 125 μg/mL and 500 μg/mL, respectively.
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