trans-2-Octenal, identified by the CAS: 2363-89-5, is an alpha,beta-unsaturated aldehyde that occurs naturally in various plant and animal sources, including mushrooms, tea, and cooked meats. It is characterized by a distinctive fatty, green, and slightly nutty aroma, which becomes reminiscent of cucumbers or citrus at lower concentrations. This versatile chemical is highly valued in the flavor and fragrance industry for its ability to impart realistic savory and fresh notes to a wide range of products.
As a flavoring substance, it plays a crucial role in creating complex profiles for snacks, dairy products, and beverages. Its chemical structure, featuring a double bond at the C-2 position in the trans configuration, provides the specific reactivity and olfactory properties required for high-quality aromatic formulations. The compound is typically handled with care to prevent oxidation, often being stabilized with antioxidants to maintain its sensory integrity during storage and transport.