What is 2,6-nonadien-1-ol?
2,6-nonadien-1-ol (CAS Number 7786-44-9) is an aliphatic alcohol with a nine-carbon chain containing two double bonds. It is classified as a flavoring agent or flavoring adjuvant by the FDA. This compound occurs naturally in various fruits and plants, contributing to their characteristic aromatic profiles. The chemical structure contains hydroxyl and unsaturated hydrocarbon functional groups, which contribute to its volatile nature and sensory properties.
Common Uses
2,6-nonadien-1-ol is employed in the food and beverage industry primarily as a flavoring component. Its fruity and floral characteristics make it valuable in:
- Beverage formulations, particularly fruit juices and flavored drinks
- Confectionery products
- Baked goods and snack foods
- Dairy products and yogurts
- Flavor compounds and fragrance applications
The compound is used in very small concentrations as part of complex flavoring systems, where it contributes to the overall sensory experience without serving as the primary flavor note.
Safety Assessment
According to FDA records, there have been zero reported adverse events associated with 2,6-nonadien-1-ol and zero product recalls linked to this ingredient. This absence of reported safety incidents suggests a favorable safety profile in food applications.
The compound's safety assessment is based on its natural occurrence in food sources and its use at typical flavoring concentrations, which are generally very low (parts per million ranges). Like many flavor compounds, 2,6-nonadien-1-ol undergoes metabolic processing in the body similar to other small alcohols and unsaturated hydrocarbons.
Toxicological data for this specific compound is limited in the public domain, which is typical for minor flavor components used at trace levels. The lack of evidence of harm, combined with zero documented adverse events, provides reasonable assurance regarding its safety in food use.
Regulatory Status
2,6-nonadien-1-ol is not listed on the FDA's Generally Recognized as Safe (GRAS) database. However, this does not indicate the ingredient is unsafe. Rather, it reflects that the manufacturer may not have pursued formal GRAS notification or that comprehensive safety documentation was not submitted for FDA review.
The ingredient can be used in foods under FDA regulations as a flavoring component when properly documented in company safety files. Many flavor compounds function similarly—they are permitted for use under FDA's flavor regulations without formal GRAS status.
Regulatory approaches to this ingredient may vary internationally. The European Food Safety Authority (EFSA) and other regulatory bodies may have different classifications or approval statuses for this flavoring agent.
Key Studies
Published scientific literature specifically examining 2,6-nonadien-1-ol toxicity or safety is limited, which is typical for minor flavor compounds. Safety assessments for such ingredients often rely on:
- Structure-activity relationship (SAR) analysis comparing similar compounds
- The ingredient's natural occurrence in foods
- The principle of threshold of toxicological concern (TTC) for minor components
- Absence of adverse event reports in regulatory databases
The naturally-occurring status of this compound in fruits and plant sources provides additional confidence in its safety profile, as humans have historical dietary exposure through whole foods.
Research on related nonanols and unsaturated alcohols suggests metabolic pathways similar to other food-grade flavor compounds, with typical Phase I and Phase II metabolism producing readily-excretable metabolites.