Lipid Oxidation Post Harvest

Lipid oxidation post-harvest refers to the chemical degradation of fats and oils in cannabis plant material after cutting, driven by exposure to oxygen, light, and heat. This process can alter the aromatic profile of dried flower, producing secondary compounds that contribute to earthy, nutty, or slightly musty notes distinct from the fresh plant's original terpene expression. Breeders and cultivators track lipid oxidation as a factor in how cultivar aromas evolve during drying and curing. The rate and character of oxidation depend on harvest timing, moisture content, storage temperature, and initial lipid composition in the biomass. Understanding this post-harvest chemistry helps inform decisions about drying methods, packaging, and storage conditions to preserve or intentionally develop specific aroma characteristics.

Breeders working with specific cultivar lineages often document how lipid oxidation affects the final aroma expression, since oxidative stability can vary by genotype. This knowledge informs selection for cultivars whose terpene and lipid profiles remain stable or develop desirable aged characteristics under standard post-harvest handling.