UV-C Light Converts Chlorophyll to Pheophytin (Color Changes) Ultraviolet light, especially UV-C (100–280 nm), can rapidly break down chlorophyll in cannabis ethanol extracts. The high-energy UV photons cause demetallation of chlorophyll – essentially knocking out the central magnesium ion to form pheophytin. This process, often called pheophytinization, turns the pigment from vibrant green to a dull […]