Enzyme Activity Post Harvest

Enzyme activity post-harvest refers to the biochemical processes occurring in harvested cannabis tissue after plant death. During curing and storage, endogenous enzymes—including proteases, lipases, and oxidoreductases—continue breaking down chlorophyll, fats, and proteins, producing secondary metabolites and volatile compounds. These enzymatic transformations are central to how cannabis develops its final aroma profile, flavor complexity, and cannabinoid stability. Proper temperature, humidity, and airflow during curing optimize these natural processes, while degradation conditions (heat, light exposure, poor ventilation) can accelerate undesired breakdown. Understanding enzyme activity helps breeders and cultivators predict how a given chemotype will evolve organoleptically over weeks to months.

Breeders select for lineages with favorable enzymatic profiles—those that produce desirable volatile precursors and degrade chlorophyll efficiently during cure. Post-harvest enzyme behavior is also tracked in preservation studies to identify cultivars with stable terpene retention and cannabinoid longevity in storage.