betaionone

Beta-ionone is an organic compound belonging to the ionone family, a class of aroma compounds derived from carotenoids. It is a C13-norisoprenoid with a cyclic enone structure and is known for a violet-like fragrance with fruity and floral undertones. In nature, beta-ionone occurs in trace amounts in various flowers and fruits and is formed in plants through enzymatic cleavage of carotenoids such as beta-carotene by carotenoid cleavage dioxygenases.

Industrial production combines natural sourcing and synthetic routes. It is manufactured for use as a fragrance ingredient in perfumery to impart violet notes and is also used in flavorings to provide berry and violet-like accents. Because of its distinctive odor, beta-ionone is frequently discussed alongside other ionones, such as alpha- and gamma-ionone, as part of the same fragrance family.

Safety and regulation: In cosmetics and personal care products, beta-ionone is listed as a fragrance allergen in several regulatory regimes, requiring labeling when used in formulations. This has led to cautious use in formulations and adherence to labeling thresholds where applicable.

Chemistry and applications: Beta-ionone is categorized as a C13-norisoprenoid and a breakdown product of carotenoids. It serves not only as a fragrant ingredient but also as a synthetic precursor and reference compound in perfumery and flavor chemistry, contributing to violet and fruity notes and enabling modification of aroma profiles in fragrance blends.