Effect of a Diffused Essential Oil Blend on Bacterial Bioaerosols

Author: S. C. Chao, D. G. Young, and C. J. Oberg
Journal: Journal of Essential Oil Research 10, 517523 (Sept/Oct 1998)
Location: Weber State University, Ogden, UT
Abstract: A proprietary blend of oils containing cinnamon, rosemary, clove, eucalyptus, and lemon was tested for its antibacterial activity against airborne Micrococcus luteus, Pseudomonas aeruginosa, and Staphylococcus aureus. The bacteria cultures were sprayed in an enclosed area, and Thieves was diffused for a given amount of time. There was an 82% reduction in M. luteus bioaerosol, a 96% reduction in the P. aeruginosa bioaerosol, and a 44% reduction in the S. aureus bioaerosol following 10 minutes of exposure.
Conclusion: Diffusion of the oil blend, Thieves, can significantly reduce the number of aerosol-borne bacteria.