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Official Journal of the Japan Wood Research Society

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Sensory evaluation of carpet cleaner containing essential oil and the effect on mites

Abstract

We prepared carpet cleaners containing three wood oils extracted from Thujopsis dolabrata Sieb. et Zucc. var. hondai Makino, Chamaecyparis obtusa Endl., and Chamaecyparis taiwanensis Masamune et Suzuki and studied their effects on mites and perfumerists' impressions. The oil concentrations were set at 0.1%, 0.2%, 0.4%, 0.8%, and 1.6%. The effects on Dermatophagoides pteronyssinus Trouessart were investigated. The sensory evaluations were conducted by seven male perfumerists using the SD method and they were asked to describe freely their impressions of the scents. These results showed that: (1) all three types of wood oil had a significant effect on making D. pteronyssinus inactive at 0.1% concentration; and (2) the wood oil of T. dolabrata evoked refreshing, natural, rich, and intellectual feelings; C. obtusa oil evoked vivacious, rich, and intellectual feelings; and C. taiwanensis evoked refreshing, natural, rich, rough, masculine feelings. According to the test subjects, T. dolabrata evoked “woody” and “earthy” impressions; C. obtusa evoked “woody,” “citrus,” and “pine-resin” impressions; and C. taiwanensis evoked “woody,” “citrus,” and “medical” impressions. Many issues remain to be investigated, but the inclusion of wood oil in carpet cleaners offered both good mite control and a pleasant aroma to humans. This study suggests a new potential for using these wood oils.

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Yamamoto, N., Miyazaki, Y. & Sakuda, K. Sensory evaluation of carpet cleaner containing essential oil and the effect on mites. J Wood Sci 44, 90–97 (1998). https://doi.org/10.1007/BF00526251

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Key words

  • Sensory evaluation
  • Essential oil
  • House dust mite
  • Carpet cleaner