The carotenoids are the most widely distributed secondary metabolites in plants and can be degraded by carotenoid cleavage dioxygenase (CCD) to form apocarotenoids including an important C13 compound beta-ionone. Volatile beta-ionone can confer the violet and woody fragrance to plant essential oils. flowers. fruits. https://www.spidertattooz.com/Quilters-Select-6x24-Ruler-by-Alex-Anderson/