Citation

Boumrah Y, Kermouche W, Zarita B, Drardja ED, Bouanani S. J. Forensic Sci. 2022; ePub(ePub): ePub.

Copyright

(Copyright © 2022, American Society for Testing and Materials, Publisher John Wiley and Sons)

DOI

10.1111/1556-4029.15001

PMID

35103308

Abstract

In Algeria, hashish is by far the most common illicit drug. This study explores Algerian hashish over a two-year period (2019-2020). A total of 2583 hashish samples from 1707 seizures for a total quantity of 108 tons were analyzed using a validated high-performance liquid chromatography-diode array detection method (HPLC-DAD). The yearly arithmetic mean tetrahydrocannabinol (THC) concentration shows relative stability-18.67% in 2019 and 19.03% in 2020 with an overall mean THC content of 18.87% and standard deviation of 10.99%. High-potency hashish (THC content > 20%) is by far the most predominant type, representing almost 50% of the total Algerian hashish seizures (mean and median around 29%). The overall mean of cannabidiol (CBD) was 2.45%, and 12% of the total studied seizures were of very low CBD concentration (CBD content<1%). Three distinct hashish chemotypes were identified: Chemotype I described the traditional Moroccan hashish with THC content ranging from 0% to 16%, Chemotype II hashish included most of the seizures and characterized by THC content ranging from 16% to 30%, and Chemotype III was characterized by hashish potency higher than 30% and very low CBD content. The identified chemotypes I, II, and III were characterized in a ternary plot, and the relative contents (THC:CBD:CBN) were about 67%:29%:4%, 88%:9%:3%, and 96%:2%:2%, respectively.

Language: en

Keywords

cannabis; Algeria; cannabidiol; cannabinol; hashish hybrids; high-performance liquid chromatography-diode array detection; North African hashish; potency; Δ9-tetrahydrocannabinol