Chemical composition and antifungal activity of Cinnamomum camphora chvar. Borneol essential oil obtained using solvent-free microwave-assisted method

Abstract

Cinnamomum camphora chvar. Borneol is an important commercial tree species in China as its essential oil contains abundant endo-borneol. Hydrodistillation (HD) is a mainstream technique for the separation of C. camphora chvar. Borneol essential oil. The shortcomings of HD include low extraction efficiency, high energy consumption, and long extraction time, emphasizing the need for the application of a fast and efficient procedure for recovering C. camphora chvar. Borneol essential oil. To determine the optimal conditions for the effective extraction, solvent-free microwave-assisted extraction (SFME) was used in conjunction with the Box-Behnken response surface design. The optimal conditions resulted in a maximum essential oil yield of 42.03 ± 1.56 mg/g. These results showed that SFME is an efficient, green, and economical method for obtaining essential oil with a higher proportion of endo-borneol compared to HD. Furthermore, C. camphora chvar. Borneol essential oil exhibited remarkable inhibitory activity against the five Fusarium spp. species that cause potato dry rot. The results could provide useful information regarding the comprehensive utilization of C. camphora chvar. Borneol essential oil as a new botanical pesticide in agriculture and food production.

Keywords

• Cinnamomum camphora chvar. Borneol
• Essential oil
• Solvent-free microwave extraction
• Endo-borneol
• Optimization
• Antifungal activity