Enzymatic Aroma Degradation

Enzymatic aroma degradation refers to the biochemical breakdown of volatile terpenes and aromatic compounds during cannabis storage, drying, curing, and aging. This process involves plant enzymes—particularly oxidases and other catalytic proteins—that continue metabolizing terpenes after harvest, gradually altering a cultivar's aromatic profile over time. Breeders and geneticists study enzymatic activity rates to understand phenotypic stability and shelf-life variability across lineages. Some cultivars exhibit slower enzymatic breakdown, preserving complex terpene ratios longer, while others show rapid degradation patterns. This trait family intersects with post-harvest chemistry, preservation strategies, and long-term cannabinoid–terpene interactions.

Breeders working in preservation-focused programs select for cultivars with slower enzymatic degradation rates, favoring genetic lines that retain volatile profiles during extended storage. Understanding enzyme expression patterns helps develop stable seed stocks and informs decisions about cure duration and environmental controls needed to maintain desired aroma characteristics.