Preserving Terpenes During Cannabis Harvesting and Processing

Understanding Terpene Volatility

Terpenes are highly volatile compounds that can easily degrade or evaporate when exposed to certain conditions, such as heat, light, and air. To preserve these valuable compounds, it is essential to consider the following factors throughout the harvesting and processing journey.

Harvest Timing

Timing is critical when it comes to preserving terpenes. Harvesting cannabis at the peak of terpene development ensures the highest concentration of these aromatic compounds. Monitor the trichomes closely and harvest when they have reached their desired maturity level to maximize terpene preservation.

Proper Drying Techniques

Drying is a crucial step in cannabis processing, and it directly affects terpene preservation. Follow these best practices:

  • Gentle Handling: Handle the harvested buds with care to avoid damaging the delicate trichomes, which contain the majority of terpenes.

  • Slow Drying: Dry the cannabis slowly at a controlled temperature and humidity level. Rapid drying methods can lead to terpene loss and degradation. Aim for a drying environment with temperatures around 60-70°F (15-21°C) and humidity levels between 45-55%.

  • Dark and Controlled Environment: Shield the drying buds from direct light exposure, as UV rays can degrade terpenes. Maintain a dark and well-ventilated space to prevent mold growth while preserving the aromatic essence of the buds.

Cold Extraction Techniques

When extracting cannabinoids and terpenes from cannabis, cold extraction methods can help preserve the delicate terpene profiles. These techniques involve using solvents at low temperatures, such as ethanol or hydrocarbon extraction in sub-zero conditions. Cold extraction minimizes the loss of volatile terpenes and captures a broader range of aromatic compounds.

Store in Airtight Containers

Proper storage is vital for maintaining terpene integrity after the processing phase. Follow these guidelines:

  • Airtight Containers: Store the processed cannabis, such as dried flower or concentrates, in airtight containers made of glass or other non-reactive materials. This helps prevent exposure to oxygen, which can accelerate terpene degradation.

  • Cool and Dark Environment: Store the containers in a cool and dark place to minimize temperature fluctuations and protect the terpenes from heat and light exposure.

Consider Terpene-Rich Processing Methods

Certain processing methods prioritize terpene preservation, ensuring the final product retains its aromatic and therapeutic qualities:

  • Live Resin Extraction: Live resin extraction involves freezing freshly harvested cannabis and extracting the cannabinoids and terpenes while they are still in their most vibrant state. This method captures the full spectrum of terpenes, resulting in highly aromatic extracts.

  • Steam Distillation: Steam distillation is a gentle extraction method that separates terpenes from the plant material using steam. This technique helps preserve the natural terpene profiles, making it a popular choice for essential oil production.

Preserving terpenes during cannabis harvesting and processing is essential for unlocking the full sensory and medicinal potential of the plant. By carefully timing the harvest, employing proper drying techniques, utilizing cold extraction methods, storing the processed cannabis in airtight containers, and considering terpene-rich processing methods, cultivators and processors can ensure the preservation of these aromatic compounds.