What is Acetaldehyde Di-cis-3-hexenyl Acetal?
Acetaldehyde di-cis-3-hexenyl acetal (CAS Number 63449-64-9) is a synthetic organic compound classified as a flavoring agent. It belongs to the acetal family of compounds, which are formed from the reaction of an aldehyde with an alcohol. In this case, acetaldehyde reacts with cis-3-hexenol to create a compound that provides distinctive sensory characteristics to food and beverage products.
The chemical structure of this compound allows it to volatilize and interact with taste and smell receptors, making it an effective flavoring tool. As a synthetic ingredient, it is manufactured through chemical synthesis rather than extracted from natural sources.
Common Uses
Acetaldehyde di-cis-3-hexenyl acetal is used in the flavor industry to create fruity, floral, and green note profiles in various food applications. Its primary uses include:
- Beverage flavoring (non-alcoholic and alcoholic beverages)
- Dairy product flavoring (yogurt, flavored milk)
- Confectionery and candy applications
- Baked goods flavoring
- Processed fruit preparations
The compound is typically used in very small quantities—measured in parts per million—to achieve desired flavor effects. Flavorists select this ingredient when they seek to enhance or create fresh, fruity, or herbaceous taste notes in formulations.
Safety Assessment
Acetaldehyde di-cis-3-hexenyl acetal has not been formally established as Generally Recognized as Safe (GRAS) by the FDA. However, the lack of GRAS status does not indicate a safety concern; rather, it reflects the specific regulatory pathway chosen for the ingredient.
Key safety observations include:
- **Adverse Event Reports**: The FDA has received zero adverse event reports associated with this flavoring compound.
- **Regulatory Recalls**: No product recalls specifically related to this ingredient have been issued by the FDA.
- **Toxicity Profile**: As with many synthetic flavor compounds, safety assessments typically examine acute toxicity, chronic toxicity, and potential reproductive or developmental effects at realistic exposure levels.
The flavor industry has developed guidelines for safe use levels of flavoring compounds. Industry bodies, including the Flavor and Extract Manufacturers Association (FEMA), establish acceptable use levels based on available toxicological data and historical use patterns.
Regulatory Status
In the United States, flavoring agents fall under FDA regulations (21 CFR Part 182 and Part 184). While acetaldehyde di-cis-3-hexenyl acetal is not on the GRAS list, it may be used in food as a flavoring agent under FDA regulations that permit certain color additives and flavoring substances.
The regulatory landscape for synthetic flavoring agents is complex. The absence of formal GRAS status may mean the ingredient is:
- Approved through a Color Additives Petition (CAP) process
- Used based on pre-1958 use history
- Subject to existing use regulations specific to flavoring compounds
Manufacturers using this ingredient should maintain documentation of its safety and compliance with applicable regulations.
Key Studies
Published scientific literature on acetaldehyde di-cis-3-hexenyl acetal remains limited in the public domain. Most safety and efficacy data are held by manufacturers and flavor companies as proprietary information.
Research on related acetal compounds and acetaldehyde chemistry provides context:
- Acetaldehyde itself is a naturally occurring compound produced during fermentation and present in many foods
- Acetal compounds are generally considered stable and less reactive than their parent aldehydes
- Flavor compound safety assessments typically follow OECD guidelines and FDA guidance documents
The absence of adverse event reports and recalls suggests that when used at intended levels in food applications, this flavoring agent has not raised safety concerns in consumer populations.