What is Cis-5-octenoic Acid?
Cis-5-octenoic acid (CAS Number: 41653-97-8) is an unsaturated fatty acid with eight carbon atoms and one double bond in the cis configuration at the fifth carbon position. This organic compound occurs naturally in various food sources and is structurally related to other fatty acids commonly found in nature. The compound is primarily used in the food industry as a flavoring agent or flavoring adjuvant, contributing to the overall taste and aroma profile of finished food products.
Common Uses
Cis-5-octenoic acid is utilized in food manufacturing as a minor ingredient in flavoring formulations. It is typically employed in very small concentrations to provide or enhance fatty, buttery, or creamy taste notes in processed foods and beverages. Common applications include:
- Dairy product flavoring formulations
- Savory snack seasonings
- Processed meat flavoring systems
- Beverage flavor components
- Bakery product flavor enhancement
The compound functions as part of complex flavoring blends rather than as a standalone ingredient, working synergistically with other flavor compounds to achieve desired sensory characteristics.
Safety Assessment
Cis-5-octenoic acid has not been formally designated as Generally Recognized As Safe (GRAS) by the FDA, indicating that it does not have the regulatory classification granted to commonly accepted food ingredients like salt or vinegar. However, this status does not indicate a safety concern; rather, it reflects that formal GRAS affirmation was not pursued through the FDA's notification process.
The available safety data for this additive is notable for its clean record: the FDA has received zero adverse event reports associated with cis-5-octenoic acid consumption, and zero product recalls have been attributed to this substance. This absence of reported adverse effects, combined with its natural occurrence in foods and its structural similarity to other approved fatty acids, suggests a low toxicological concern profile.
The compound's use at very low concentrations in flavoring applications—typical of how most flavor chemicals are employed—further reduces any potential health risk. Fatty acids are fundamental to normal nutrition and metabolism, and this compound functions within those biochemical pathways.
Regulatory Status
In the United States, cis-5-octenoic acid is permitted for use in food flavoring formulations under FDA regulations, though without explicit GRAS status. The FDA allows its use as a food additive in flavoring systems under the framework of food additive regulations. The compound is not listed on the FDA's prohibited additives list and is not subject to any usage restrictions or bans in major food markets.
International regulatory approaches vary. The compound may be evaluated differently under European Union regulations or other national food safety frameworks, though no widespread bans or restrictions have been documented. Regulatory agencies in different jurisdictions may have different classification systems for flavoring compounds.
Key Studies
Limited published scientific literature is available specifically focused on cis-5-octenoic acid toxicology and safety assessment. The additive has not been the subject of major regulatory safety reviews or large-scale research programs, which is typical for minor flavoring ingredients used at very low concentrations.
The lack of research publications does not constitute evidence of danger; rather, it reflects the regulatory approach to flavoring compounds where safety is evaluated at the point of use concentration. Structural analogs and related fatty acids have extensive safety documentation supporting their use in food applications.
Any safety assessment of this compound must consider its use concentration (typically parts per million in finished food products), its natural occurrence, and the established safety profile of structurally similar fatty acids used in food manufacturing.