Indoor Space Disinfection Effect and Bioactive Components of Chamaecyparis obtusa Essential Oil

Chamaecyparis obtusa (Siebold & Zucc.) Endl. (Cupressaceae) is known to produce a variety of antimicrobial substances. In the present study, components of three lots of essential oil from C. obtusa were analyzed by GCMS. It was confirmed that thujopsene and pinene were common markers. In addition, we report indoor space disinfectant effects of products containing C. obtusa essential oil (PO100, PO500, PO1000). It was confirmed that PO100 and PO500 could effectively remove airborne microorganisms in indoor spaces. Results of our study suggest that C. obtusa essential oil is effective in reducing contamination by infectious microorganisms in confined spaces.