What is Citronellyl Propionate?
Citronellyl propionate (CAS Number 141-14-0) is a synthetic organic compound belonging to the ester family of flavor compounds. It is created by combining citronellol, a naturally occurring alcohol found in rose oil and geranium oil, with propionic acid. The resulting ester produces a characteristic fruity and floral aroma with subtle woody undertones, making it valuable in the flavor industry.
Common Uses
Citronellyl propionate is employed as a flavoring agent and flavor adjuvant in various food and beverage applications. It is typically used in small concentrations to enhance or modify the sensory profile of products such as beverages, confectionery, baked goods, dairy products, and processed foods. The compound contributes fruity, floral, and slightly green notes that complement both sweet and savory applications. As with most synthetic flavoring compounds, it is used at levels far below those that would pose any safety concern.
Safety Assessment
Citronellyl propionate has not been formally affirmed as Generally Recognized as Safe (GRAS) by the FDA. However, this designation does not indicate a safety concern; rather, it reflects the regulatory pathway and historical review status of the ingredient. The compound has no reported adverse events in the FDA database and is associated with zero product recalls, indicating a favorable safety profile in commercial use.
The safety of citronellyl propionate is supported by its structural similarity to other approved flavor esters and its low use levels in food applications. As a synthetic ester derived from recognized flavor components, it has been used in flavor formulations for decades without documented safety incidents. The compound's chemical stability and metabolic fate are consistent with other similar ester-based flavorings approved for food use in major regulatory jurisdictions.
Regulatory Status
In the United States, citronellyl propionate is regulated as a food additive and flavoring agent under FDA authority. While not on the GRAS list, it may be used in food products in accordance with the Code of Federal Regulations (CFR) Title 21 as a flavoring substance, subject to current good manufacturing practices and appropriate use levels.
In the European Union, citronellyl propionate is listed in the Flavouring regulation and is permitted for use as a flavoring agent in food products. It appears in EU flavor databases and is subject to the regulatory framework governing flavoring substances in member states.
The use of citronellyl propionate is permitted in major food markets globally, including Canada, Australia, and Japan, where it is recognized as a legitimate flavoring ingredient when used at appropriate concentrations.
Key Studies
Scientific literature on citronellyl propionate is limited, reflecting the general approach to ester-based flavoring compounds where safety is established through structural evaluation and comparison with authorized similar substances rather than extensive clinical testing. The compound's components—citronellol and propionic acid—are individually recognized as safe ingredients, and their combination via esterification produces a stable, well-characterized compound.
The toxicological profile of citronellyl propionate is presumed safe based on:
- Its low concentration of use in food (typically parts per million range)
- The safety history of its parent compounds
- The metabolic fate of esters, which are readily hydrolyzed and metabolized
- Absence of reported adverse events despite decades of commercial use
- Compliance with international flavoring regulations
No significant safety concerns have been identified in available scientific or regulatory literature regarding citronellyl propionate at approved use levels.