Post Harvest Oxidation

Post-harvest oxidation refers to the chemical changes that occur in cannabis plant material after harvest, primarily involving the breakdown of chlorophyll and the oxidation of cannabinoids and terpenes. This process is influenced by factors including temperature, light exposure, humidity, and oxygen availability during drying and curing. Breeders and cultivators monitor oxidation rates because they affect final color, aroma profile stability, and cannabinoid preservation. Some cultivars show slower oxidation due to genetic factors affecting cell wall structure and antioxidant compound expression. Understanding oxidation is essential for seed preservation strategies, as properly stored genetics require controlled conditions to prevent unwanted chemical degradation during long-term storage.

Breeders working with preservation protocols select for genetics that display stable antioxidant profiles and slower oxidation rates during storage. Lines with robust cell wall structures often show better cannabinoid and terpene retention through extended post-harvest phases, making them valuable for seed banking and commercial shelf-life programs.