Volatile constituents and biological activities of the leaf essential oil of Jasminum mesnyi growing in Nepal

Abstract

The essential oil from the leaf of Jasminum mesnyi, collected from Kirtipur, Kathmandu, Nepal, was obt ained by hydrodistillation and analyzed by GC-MS. From a to tal of 31 peaks, 25 compounds were identified in th e oil, accounting for 91.1% of the oil. The majority of tessential oil was dominated by the benzopyrone c (48.9%). The oil also contained major amounts of m onoterpenols including linalool (14.8%), α-terpineol (5.2%), and geraniol (3.3%). Other components of the essent ial oil found in smaller proportion included (Z)-as arone (3.5%) and (E)-phytol (3.4%). The oil was screened for an timicrobial activity against Bacillus cereus, Staph ylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, a nd Aspergillus niger, but showed no appreciable act ivity (MIC ≥ 1250 µg/mL). Jasminum mesnyi oil did show marginal activ ity in the brine shrimp lethality test (LC 50 = 27.03 µg/mL).