Cytochrome P450

Cytochrome P450 refers to a family of enzymes present in cannabis plants that metabolize cannabinoids and terpenes during growth and post-harvest storage. These oxidative enzymes influence the chemical stability and degradation pathways of cannabinoid acids (THCA, CBDA) and their neutral forms, as well as secondary metabolite turnover. Understanding P450 activity is relevant to cultivation conditions, harvest timing, and preservation strategies, as enzyme activity fluctuates with temperature, light exposure, and plant stress. Breeders and researchers monitor these enzymatic processes to predict cannabinoid and terpene retention in finished material. P450 expression varies across cultivars and growing environments, making it a useful marker for lineage-specific chemistry stability.

Breeders working on stability and shelf-life traits often select for cultivars with lower endogenous P450 activity, which may correlate with slower cannabinoid degradation. Understanding P450 expression patterns helps inform storage protocols and helps predict how a strain's chemical profile will shift over time.