What is Myrtenol?
Myrtenol (CAS Number 515-00-4) is an organic compound belonging to the class of natural and synthetic flavoring agents. It is a cyclic alcohol with a molecular structure related to terpenes, the aromatic compounds found abundantly in plants. The compound can be isolated from natural sources such as essential oils from myrtle plants or synthesized chemically for use as a food flavoring agent. Its name derives from Myrtus communis, the common myrtle plant, though myrtenol itself is a secondary metabolite found in trace amounts in nature.
Common Uses
Myrtenol functions as a flavoring agent and flavor adjuvant in the food industry. It is used in very small concentrations to enhance or modify the sensory characteristics of food and beverage products. Common applications include:
- Beverage flavoring in alcoholic drinks, particularly liqueurs and spirits
- Confectionery and candy formulations
- Baked goods and desserts
- Savory food applications where herbal or aromatic notes are desired
- Fragrance components in chewing gums and breath products
Like most flavoring agents, myrtenol is used at extremely low levels—typically in parts per million—to achieve desired flavor profiles without contributing significantly to caloric intake or nutritional composition.
Safety Assessment
Myrtenol has not been formally evaluated by the FDA under the Generally Recognized As Safe (GRAS) affirmation process, meaning it does not carry GRAS status in the United States. However, the absence of GRAS designation does not indicate unsafety; rather, it reflects that formal FDA review through the GRAS notification program has not been completed or pursued by manufacturers.
The FDA database shows zero reported adverse events and zero recalls associated with myrtenol, indicating no documented safety incidents in commercial food use. This absence of adverse event reports suggests the compound has not raised safety concerns in practical application.
As a flavor compound, myrtenol is chemically similar to other terpene-derived flavoring agents that have undergone safety evaluation. The European Food Safety Authority (EFSA) has evaluated flavoring compounds and their safety parameters, though myrtenol's specific status in European regulatory frameworks may differ from its U.S. status.
Regulatory Status
In the United States, myrtenol is not explicitly prohibited but operates under the Food and Drug Administration's regulatory framework for food additives and flavoring substances. Manufacturers using myrtenol in food products must ensure compliance with 21 CFR 182 (indirect human food ingredients) or other relevant regulatory sections, depending on the specific application.
The regulatory pathway for flavoring agents in the U.S. involves either GRAS notification or food additive petition processes. Since myrtenol lacks GRAS affirmation, any manufacturer seeking to use it commercially should verify current regulatory requirements and may need to file appropriate documentation with the FDA.
International regulatory status varies by country. Some nations may include myrtenol on positive flavor lists or evaluate it through established procedures for flavoring agents, while others may have different approval pathways or restrictions.
Key Studies
Limited published scientific literature specifically addresses myrtenol in isolation. Most safety evaluations of flavor compounds rely on structural similarity to established safe compounds, in vitro toxicity screening, and consideration of typical usage levels—all of which are typically far below levels that would cause biological effects.
Safety assessments of terpene-derived compounds generally indicate low toxicity when used at flavoring concentrations. The high volatility of myrtenol and related compounds, combined with their rapid metabolism and excretion, suggests minimal bioaccumulation potential.
Any manufacturer considering commercial use of myrtenol should consult current regulatory guidance and consider commissioning or reviewing toxicological data appropriate to their intended use and market.