Dark Oxidation

Dark oxidation refers to browning and darkening processes in cannabis material, typically resulting from enzymatic and chemical reactions during curing, storage, or processing. These reactions can develop dark amber, brown, or nearly black pigmentation in dried flower, trim, or extracted material. Dark oxidation is distinct from chlorophyll breakdown and often involves oxidative degradation of cannabinoids and terpenes under specific humidity, temperature, and oxygen conditions. Breeders and processors encounter this phenomenon across various genetics, though it's primarily a post-harvest consideration rather than a genetic trait. Understanding dark oxidation helps inform storage protocols and processing decisions, as it can significantly alter visual appearance and chemical composition of finished cannabis material.

While not a heritable breeding target, breeders and seed producers monitor dark oxidation patterns during long-term seed storage and cured flower preservation. Strains with higher terpene or chlorophyll profiles may show different oxidation signatures, making this relevant to preservation strategy selection for seed banks and breeders maintaining genetic lines.