Comparison of chemical composition and antimicrobial activity of essential oils from three Pinus species

摘要: The essential oils of the leaves three Pinus species (Pinus densiflora, P. thunbergii, rigida) were analyzed by gas chromatography/mass spectrometry (GC/MS). Analysis from thunbergii and rigida revealed presence α-humulene (18.09%, 19.59%, 14.08%), caryophyllene (7.69%, 5.32%, 10.20%), β-pinene (4.95%, 4.45%, 7.39%), β-cadinene (3.28%, 1.30%, 3.71%), cinnamic acid (2.62%, 1.24%, 2.87%), α-terpinolene (2.10%, 0.51%, 0.3%), spathulenol (2.04%, 0.34%, 2.78%), α-cadinol (1.85%, 0.97%, 2.60%), oxide (1.82%, 0.23%, 0.13%) α-pinene (1.79%, 0.68%, as major constituents. Essential oil showed stronger inhibitory activity against Bacillus subtilis, natto, Staphylococcus aureus, Escherichia coli, Salmonella typhosa Pseudomonas aeruginosa than other two species, strong antimicrobial enteritidis aeruginosa. also higher Gram-negative bacteria Gram-positive bacteria. Saccharomyces cerevisiae (yeast) was not inhibited any oil.