Limonene Degradation

Limonene degradation refers to the breakdown or oxidation of limonene, a major citrus-scented terpene, during storage, processing, or environmental exposure. When limonene molecules degrade, they can convert into secondary compounds like carvone, perillic acid, or other oxidation byproducts, potentially altering the strain's aroma profile over time. This process is commonly observed in cannabis samples exposed to heat, light, or oxygen, and is often considered a preservation concern rather than a desired trait. Breeders and cultivators working with limonene-rich strains frequently monitor storage conditions to maintain terpene integrity. Understanding limonene stability helps explain why fresh flower and aged flower from the same strain may smell noticeably different.

Breeders focused on consistency and shelf-life stability may select for strains with robust limonene expression or explore terpene ratios that resist oxidation. Knowledge of degradation pathways also informs cultivar preservation protocols and post-harvest handling standards in commercial breeding programs.