Chemical Composition of Volatile Oils of Fresh and Air-Dried Buds of Cannabis chemovars, Their Insecticidal and Repellent Activities


Wanas A. S., Radwan M. M., Chandra S., Lata H., Mehmedic Z., Ali A., ...More

NATURAL PRODUCT COMMUNICATIONS, vol.15, no.5, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 5
  • Publication Date: 2020
  • Doi Number: 10.1177/1934578x20926729
  • Journal Name: NATURAL PRODUCT COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Chemical Abstracts Core, EMBASE, Veterinary Science Database, Directory of Open Access Journals
  • Keywords: cannabis essential oils, gas chromatography, insecticidal, larvicidal, MARIJUANA, PAIN
  • Anadolu University Affiliated: Yes

Abstract

The volatile oils of fresh and air-dried buds of 3 different varieties of Cannabis, namely, high cannabidiol (CBD) chemotype, inter- mediate CBD/tetrahydrocannabinol chemotype, and high THC chemotype were prepared by hydrodistillation. Gas chro- matography analysis of the volatile oils resulted in the identification of 71 compounds, of which 33 were monoterpenes and 38 were sesquiterpenes. The volatile oil obtained from the THC chemotype showed an increase in the ratio of the sesquiterpenes to monoterpenes content. The content of terpinolene was dramatically decreased upon drying of THC chemotype. Moderate increase in beta-caryophyllene and caryophyllene oxide was observed. However, there was no detectable change in the percentage of monoterpenes and sesquiterpenes content in both the intermediate type and CBD chemotype upon drying. The insecticidal activity of the volatile oils was evaluated. The oil obtained from the fresh and dried high CBD cannabis showed good biting deterrent activity at 10 ug/cm(2) compared with N,N-diethyl-meta-toluamide at 4.78 mu g/cm(2), and good larvicidal activity.