The stability of various Cannabinoids in different Cannabis products (Marijuana plant material, Marijuana cigarettes and Cannabis extract) stored at The University of Mississippi - National Center for Natural Products Research was studied under different storage conditions. These included room temperature (17 ⁰C ± 4 ⁰C), refrigerator (4 ⁰C ± 2 ⁰C) and freezer (-20 ⁰C ± 2 ⁰C). The content of each individual cannabinoid was then determined periodically for up to 60 months for Cannabis biomass and Cannabis extract, and for 36 months for Cannabis cigarettes. The Cannabinoids monitored were ∆9-THC, CBD, CBC, CBG, THCV, and CBN.
Marijuana plant material of three different potencies was monitored: low potency (approx. 1.5 % THC), medium potency (approx. 2.5 % THC), and high potency (approx. 4.0 % THC), while marijuana cigarettes of approx. 8% of THC were used for the study. The potency of Cannabis extract was approx. 26 % THC.