What is (E)-2-(2-octenyl)cyclopentanone?
(E)-2-(2-octenyl)cyclopentanone, also known by its CAS number 98314-98-8, is a synthetic organic compound belonging to the cyclopentanone family of flavoring agents. The molecule consists of a cyclopentanone ring (a five-membered carbon ring with one ketone functional group) attached to an eight-carbon side chain with a double bond. The "(E)" designation indicates the geometric configuration of this double bond. This compound is used in the flavor industry to create complex fruity, slightly woody, and herbaceous taste profiles in food and beverage formulations.
Common Uses
(E)-2-(2-octenyl)cyclopentanone is utilized as a flavoring agent in various food and beverage applications. Its organoleptic properties make it suitable for use in:
- Fruit-flavored beverages and drinks
- Confectionery and candy products
- Baked goods and desserts
- Dairy products including yogurts and ice creams
- Savory snack seasonings
- Flavor compound blends used by food manufacturers
As with most synthetic flavoring agents, it is typically used in very small quantities—measured in parts per million—to achieve the desired flavor profile without contributing significantly to the caloric or nutritional content of foods.
Safety Assessment
The safety profile of (E)-2-(2-octenyl)cyclopentanone remains limited in the public domain due to its non-GRAS status. The FDA has recorded zero adverse events and zero recalls associated with this additive, indicating no documented consumer complaints or safety incidents linked to its use. However, the lack of official GRAS approval suggests that comprehensive safety data may not have been submitted to or reviewed by the FDA, or that such review was not completed through the GRAS notification process.
The compound's safety assessment would typically involve standard toxicological testing protocols, including acute toxicity studies, genetic toxicity (mutagenicity) testing, and potentially subchronic or chronic exposure studies, depending on the intended level and duration of human exposure. Such data may exist in industry files or proprietary databases but are not necessarily publicly available unless formally submitted through regulatory channels.
Regulatory Status
In the United States, (E)-2-(2-octenyl)cyclopentanone is not approved as a GRAS substance by the FDA. This means it cannot be marketed as a direct food additive under the GRAS exemption but may be used in foods under Food Additive Petition (FAP) approval if such approval has been granted, or it may be permitted in flavoring blends under specific regulatory frameworks for "artificial flavors."
The European Food Safety Authority (EFSA) maintains separate approval processes for flavoring substances. The regulatory landscape for this particular compound in the EU is not clearly documented in widely accessible sources, suggesting it may have limited or regional approval status in Europe.
Manufacturers utilizing this flavoring agent must comply with labeling requirements and quantity limitations established by their respective regulatory authorities. In the United States, if approved for use, it would typically be listed as part of the "artificial flavor" designation on product labels rather than identified by its chemical name.
Key Studies
Publicly available peer-reviewed research specifically evaluating (E)-2-(2-octenyl)cyclopentanone is limited. Scientific literature on related cyclopentanone flavoring compounds suggests that compounds in this class are generally metabolized rapidly and do not bioaccumulate in tissues. However, specific pharmacokinetic or toxicological studies on this particular isomer do not appear prominently in standard scientific databases.
The absence of published studies does not necessarily indicate safety concerns but rather reflects the proprietary nature of flavor development and the regulatory focus on GRAS-approved substances. Food manufacturers and flavor suppliers maintain safety data internally and may provide such information to regulatory agencies upon request.