• Corpus ID: 103203171

CBN and D9-THC concentration ratio as an indicator of the age of stored marijuana samples*

@inproceedings{Ross1997CBNAD,
  title={CBN and D9-THC concentration ratio as an indicator of the age of stored marijuana samples*},
  author={Samir A. Ross and Mahmoud A. Elsohly},
  year={1997}
}
The concentration of D9-tetrahydrocannabinol (THC) and cannabinol (CBN) in cannabis plant material (marijuana) of different varieties stored at room temperature (20-22o Celsius (C)) over a four-year period was determined. The percentage loss of THC was proportional to the storage time. On average, the concentration of THC in the plant material decreased by 16.6% ±7.4 of its original value after one year and 26.8% ±7.3, 34.5% ±7.6 and 41.4% ±6.5 after two, three and four years, respectively. A… 
An approach to the evaluation of the potency of cannabis resin in Madrid: a health hazard?
TLDR
The study shows that the THC content of most of the cannabis that can be purchased in Madrid region is over 15% and poses a health hazard, and demonstrates for the first time that only those samples with very high potency can be directly associated with certain organoleptic characteristics.
Cannabinoid stability in authentic oral fluid after controlled cannabis smoking.
TLDR
Cannabinoids in expectorated OF were less stable than in Quantisal samples when refrigerated or frozen, and across participants.
Potency trends of delta9-THC and other cannabinoids in confiscated marijuana from 1980-1997.
TLDR
The analysis of 35,312 cannabis preparations confiscated in the USA over a period of 18 years for delta-9-tetrahydrocannabinol (delta9-THC) and other major cannabinoids is reported, showing that the potency of confiscated marijuana samples has continuously risen, going from 3.1% in 1992 to 4.2% in 1997.
Potency of Δ9–THC and Other Cannabinoids in Cannabis in England in 2005: Implications for Psychoactivity and Pharmacology *
TLDR
The increases in average THC content and relative popularity of sinsemilla cannabis, combined with the absence of the anti‐psychotic cannabinoid CBD, suggest that the current trends in cannabis use pose an increasing risk to those users susceptible to the harmful psychological effects associated with high doses of THC.
A study of cannabis potency in France over a 25 years period (1992-2016).
A survey of the potency of Japanese illicit cannabis in fiscal year 2010.
...
1
2
3
4
5
...