Antibacterial activity and chemical composition of essential oil of Chrysanthemum boreale.

The essential oil of Chrysanthemum boreale Makino was analyzed by means of GC and GC-MS. Eighty-seven constituents were identified, representing 94.13 % of the total oil and the major components were camphor, alpha-thujone, cis-chrysanthenol, 1,8-cineole, alpha-pinene, and beta-caryophyllene. Furthermore, the essential oil exhibited antibacterial activity (MIC, more than 800 microg/mL versus 0.125 microg/mL for ampicillin) after it was tested against 6 Gram(+) bacteria and 8 Gram(-) bacteria.