Acaricidal activities of clove bud oil and red thyme oil using microencapsulation against HDMs

作者：Kim Joo Ran; Sharma Suraj^*

来源：Journal of Microencapsulation, 2011, 28(1): 82-91.

DOI：10.3109/02652048.2010.529949

• Essential oils
• coacervation
• factorial design
• eugenol

The purpose of this study was to produce a safer microcapsule loaded with clove bud oil and red thyme oil to reduce the population of house dust mites (HDMs). Gelatin-based microcapsules 4-85 mu m in size were created, with agitation speed and type of oil playing a critical role in governing their size. Microcapsules made up of single spherical units less than 30 mu m in diameter remained separate on the fibre, whereas larger microcapsules of over 30 mu m ruptured or aggregated. Thermogravimetric analysis (TGA) demonstrated that microcapsules containing red thyme oil showed a more consistent range of oil loading, from 50 to 80%, than microcapsules containing clove bud oil, which ranged from 30 to 80% (more deviated). Mortality tests on Dermatophagoides farinae conducted on fabric with attached microcapsules showed that clove bud oil, containing a more phenolic monoterpenoid (eugenol), was more effective at reducing the live HDMs (94% mortality).</.

• 出版日期2011