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Drying Temperature Effect on CBD Content of Cannabis Based on UVM Data

Drying Temperature Effect on CBD Content of Cannabis Based on UVM Data Professor DeBacco Research Publication https://www.uvm.edu/sites/default/fil... Dryer Temperature + Humidity and Harvest Moisture At harvest, the moisture of the flower buds was statistically similar. The average actual temperature and relative humidity for each treatment indicated that the 105°F treatment dryer with buds did not reach 105°F. It is unclear why the drier was unable to maintain a constant temperature over the drying period. The drier had an average temperature that was only 7 degrees higher than the drying treatment 80°F. When drying the bud & stems, the 105°F dryer did not reach its average temperature until after 7 hours, and fluctuated the most in temperature in the first 3 hours as it warmed up, though after the first 7 hours it remained more consistent in temperature. The 80°F dryer did not have this problem and temperatures neared 80°F right away. Hourly Bud-Only Temp and Humidity Hourly temperatures and relative humidities for the buds-only experiment Hourly Bud and Stem Temp and Humidity The bud & stem experiment average dryer temperatures were approximate to the desired temperatures, and hourly temperatures and humidities Total Potential CBD In the buds only study, drying the buds at ambient temperature resulted in significantly higher total potential CBD (7.71%) than drying the buds at 105°F (5.88%) The total potential CBD of buds dried at 80°F did not significantly differ from the higher and lower temperature treatments, and resulted in a CBD percentage between the two extremes (7.01%). When drying bud & stem materials there was no significant difference between the CBD concentrations of the 105°F and 80°F treatments. This study should be repeated because of the aforementioned issues with the driers maintaining constant temperatures. Speed vs Quality While the use of higher temperatures results in faster drying rates, producers should consider the potential impact of drying temperature on the quality of their product. In this trial, drying at a higher temperature (above 80°F) resulted in significantly lower total potential CBD concentrations. It is important to remember this is only one year of data with limited replicates and drying capacity. Further research is needed, and this trial should be replicated with dryers that are more accurate. Link to Lecture Slides: https://drive.google.com/file/d/18DFZ... *Due to the description character limit the full work cited for "Drying Temperature Effect on CBD Content of Cannabis Based on UVM Data" can be viewed at... https://docs.google.com/presentation/...