beta-elemene and isoborneol

Chemical composition, antimicrobial and antioxidant activities of the essential oil of Ampelopsis megalophylla were evaluated in this research. GC-MS analysis of the essential oil revealed 42 compounds, representing 88.54% of the oil. The major compounds were borneol (10.81%), α-pinene (6.74%) and β-elemene (6.23%). The antimicrobial activity of the essential oil was evaluated against 13 micro-organisms using the disc diffusion and broth microdilution methods. Results demonstrated higher effects of this oil against Gram-positive bacteria than the other reference strains tested. The antioxidant effect of the essential oil was evaluated by using 1,1-Diphenyl-2-picrylhydrazyl (DPPH) and 2,20-azinobis-3-ethylbenzthiazoline-6-sulfonate scavenging assays. The essential oil exhibited moderate antioxidant activity.

Topics: Ampelopsis; Anti-Bacterial Agents; Antioxidants; Bicyclic Monoterpenes; Biphenyl Compounds; Camphanes; Gas Chromatography-Mass Spectrometry; Gram-Positive Bacteria; Microbial Sensitivity Tests; Monoterpenes; Oils, Volatile; Picrates; Plant Leaves; Plant Oils; Sesquiterpenes