9-DECEN-2-ONE

CAS: 35194-30-0 FLAVORING AGENT OR ADJUVANT

9-DECEN-2-ONE is an organic ketone used as a flavoring agent with a fruity odor profile commonly found in flavor formulations and evaluated by FEMA and flavor safety panels.

What It Is

9-DECEN-2-ONE is a defined organic chemical compound identified by the Chemical Abstracts Service with the registry number 35194-30-0. Chemically, it is a secondary ketone in the class of aliphatic unsaturated ketones that contribute specific aroma and flavor characteristics to food formulations. Flavoring agents such as 9-DECEN-2-ONE are used to impart or enhance desired sensory attributes in foods and beverages. These compounds are typically volatile, have a distinct odor profile, and are recognized in flavor science literature for their sensory contributions. In flavor applications, this compound exhibits notes described as fruity, pineapple, pear, apple, and green fatty elements, making it suitable for use in products designed to convey natural fruit-like qualities. This profile has been documented in flavor databases and industry sources, underscoring its relevance to sensory formulation work. Because it is used in minute quantities, it is characterized by low-intensity odor contributions relative to more potent aromatics, yet sufficient to influence overall flavor perceptions. Its presence in flavor industry catalogs and regulatory inventories highlights the compound’s utility and the role it plays within the broader context of food flavor science.

How It Is Made

The production of 9-DECEN-2-ONE generally involves chemical synthesis processes tailored for flavor and fragrance chemicals. In industrial settings, flavor chemists may start with precursor molecules such as linear aldehydes or intermediates that can be transformed via controlled oxidation and dehydration reactions to yield the desired unsaturated ketone structure. While specific proprietary methods vary by manufacturer, one common approach involves reacting suitably functionalized starting materials under conditions that favor formation of the 9-DECEN-2-ONE backbone, with catalysts and temperature control optimized to maximize yield and purity. Post-synthesis, flavor manufacturers typically subject the crude product to purification steps such as distillation, crystallization, or chromatography to achieve specifications appropriate for flavor use, where high purity is essential to avoid off-notes or undesirable reactions in finished food products. Quality control testing, including gas chromatography and sensory panel evaluation, is standard to ensure consistency across batches. Regulatory assessments and safety evaluations often reference these manufacturing contexts to understand potential impurities and exposure levels, which influence whether a given substance can be recommended for use in foods and at what concentrations.

Why It Is Used In Food

9-DECEN-2-ONE is used in the food industry primarily for its ability to provide or enhance fruity flavor notes. Flavoring agents play a crucial role in product formulation by contributing specific taste and aroma elements that consumers associate with freshness, fruitiness, and complexity. When a flavor chemist designs a fruit-flavored beverage, confectionery item, or dairy product, they may include compounds like 9-DECEN-2-ONE to mimic or amplify natural fruit characteristics, particularly those reminiscent of pineapple, pear, apple, or other green fruity aspects. These sensory characteristics can make products more appealing to consumers who expect certain profiles in items like soft drinks, flavored yogurts, baked goods, and confections. Its inclusion is typically at very low levels, aligning with good manufacturing practices where additives are used in the minimum amount needed to achieve the intended flavor effect. Regulatory evaluations such as those conducted by FEMA and flavor panels ensure that use is consistent with safety guidelines and flavor quality expectations. Because flavor perception is subjective and influenced by multiple compounds working synergistically, 9-DECEN-2-ONE is rarely used in isolation; rather, it is combined with other flavor materials to achieve a balanced and desirable sensory outcome.

Adi Example Calculation

To illustrate the concept of acceptable daily intake (ADI) without reference to a specific numeric ADI for 9-DECEN-2-ONE, consider a hypothetical scenario where a regulatory body establishes an ADI of X mg per kilogram of body weight per day for a flavoring agent. For an adult weighing 70 kilograms, the hypothetical daily intake considered acceptable would be X multiplied by 70. If X were defined as a value that regulatory evaluation determined to be without appreciable risk, a 70-kilogram adult’s daily intake at or below that calculated threshold would suggest that exposure through food at typical use levels is consistent with safety parameters. Such illustrative calculations help formulators and risk assessors conceptualize how regulatory benchmarks translate to real-world consumer exposure, though actual ADI values must be obtained from authoritative evaluations for precise comparisons.

Safety And Health Research

Scientific and regulatory bodies evaluate flavoring substances like 9-DECEN-2-ONE based on toxicological data, exposure assessments, and structural analog information to determine whether their use in food products is consistent with public health protection. Safety assessments consider aspects such as potential genotoxicity, metabolic pathways, chronic and subchronic toxicity, and reproductive effects where data are available. Expert panels such as those convened by FEMA review available toxicology studies and intake estimates, often using approaches like Maximised Survey-derived Daily Intakes (MSDI) to understand potential exposures in the general population. Structural analogs and group evaluations also inform safety considerations by assessing related compounds with similar metabolic fates. Regulatory safety assessments typically focus on the principle that flavoring agents should be used at the lowest level necessary to achieve the intended sensory effect, minimizing consumer exposure while ensuring product quality. These evaluations do not imply therapeutic effects or health benefits; rather, they assess whether use as a flavoring agent is without appreciable risk under intended conditions of use. Research continues to expand understanding of flavor chemistry and metabolic pathways to support ongoing safety evaluations.

Regulatory Status Worldwide

9-DECEN-2-ONE appears in regulatory inventories that list flavoring substances evaluated for safety in foods. For example, the United States Food and Drug Administration’s Substances Added to Food database includes this compound as a flavoring agent with technical effect identified, though inclusion in the database does not by itself constitute an FDA approval or specific regulation in the Code of Federal Regulations. The Flavor and Extract Manufacturers Association (FEMA) has assigned it a FEMA number indicating that it has been subject to expert panel evaluation for GRAS status in flavor use contexts, supporting its acceptance in flavor formulations when used according to industry and safety guidelines. In the European Union, flavoring substances including 9-DECEN-2-ONE are evaluated under the flavoring group evaluation framework managed by the European Food Safety Authority (EFSA) to ensure their safety and define conditions of use as part of the Union list of permitted flavorings. Various EFSA Flavouring Group Evaluations (FGEs) assess structurally related compounds and their metabolic and toxicological profiles. In the international context, JECFA (Joint FAO/WHO Expert Committee on Food Additives) provides evaluations and specifications for flavoring agents, though specific numeric acceptable daily intake metrics may not be established for every compound. Regulatory frameworks worldwide emphasize the use of flavoring agents in quantities consistent with good manufacturing practice and consumer safety evaluations.

Taste And Functional Properties

9-DECEN-2-ONE exhibits sensory properties described as fruity with notes reminiscent of pineapple, pear, and apple, along with subtle green or fatty undertones. These attributes make it valuable in complex flavor systems where a natural fruit character is desired. Its functional performance in formulations is influenced by its volatility and solubility; as a moderately volatile ketone, it contributes to aroma perception when a food product is consumed, enhancing first impressions and overall flavor nuance. It is typically soluble in alcohol and other organic solvents used in flavor blends, and while solubility in water is limited, it can be effectively integrated into aqueous food systems when paired with appropriate solubilizers or carriers. Heat stability and pH sensitivity are considerations for formulators, as some ketones can degrade or lose potency under extreme processing conditions, so they are often used in products with controlled thermal exposure. In sensory evaluation contexts, trained panels identify 9-DECEN-2-ONE as part of a broader flavor ensemble where its presence subtly influences overall character rather than dominating. This makes it well-suited for use in both sweet and savory applications where nuanced fruitiness can enhance consumer appeal without overwhelming other flavor components.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) refers to the estimated amount of a substance that can be ingested daily over a lifetime without appreciable health risk, based on comprehensive toxicological data and uncertainty factors. For flavoring agents like 9-DECEN-2-ONE, specific numeric ADIs may not always be established if the substance is determined to be of low toxicity and used at levels far below thresholds associated with adverse effects. When evaluators do define an ADI for a flavoring agent, they derive it from the most sensitive relevant toxicological endpoint identified in studies, applying conservative safety factors to account for uncertainties in extrapolating animal data to humans. It is important to emphasize that an ADI is not a recommended consumption level but rather a regulatory benchmark used by scientists and risk managers to assess whether expected intake from food uses is safe. Consumer exposure estimates that remain below the ADI provide reassurance that inclusion of the flavoring agent in food products at approved levels aligns with safety expectations set by regulatory authorities.

Comparison With Similar Additives

Flavoring agents similar to 9-DECEN-2-ONE often share structural features and sensory roles, such as fruity ketones and esters used to impart natural fruit nuances. For example, ethyl butyrate is a commonly used fruity ester with strong pineapple and fruity notes, often employed in beverage and confectionery applications where intense fruit character is desired. Another example is methyl anthranilate, known for its grape-like aroma used in fruit-flavored products. Both compounds differ in volatility and odor threshold, influencing how they are deployed in formulations compared to 9-DECEN-2-ONE’s more subtle profile. Isoamyl acetate, with its banana-like aroma, serves as another fruity flavoring that complements different fruit blends. These comparisons illustrate how flavor chemists select specific agents based on desired sensory outcomes, balancing factors like odor intensity, stability, and compatibility with other ingredients. While all these additives contribute fruity profiles, their individual functional and sensory properties guide their use in specific product categories.

Common Food Applications Narrative

In everyday food products, 9-DECEN-2-ONE is used to contribute nuanced fruity notes that help define the sensory profile of items like fruit-flavored beverages, confectionery products, dairy desserts, and baked goods. For instance, in a fruit drink designed to evoke tropical characteristics, the compound’s pineapple-like aroma can enhance consumer perception of authenticity and freshness, while in confectionery frostings or candies it may reinforce the sweet profile consumers expect from fruit-based flavors. In flavored dairy products such as yogurts and ice creams, it supports the emulation of natural fruit notes, often in combination with other flavoring agents that provide sweetness or acidity. Snack foods with fruit glaze or sweet coatings also benefit from its inclusion, as do certain sauces and dressings where a light fruity accent contributes to the overall balance. Because it is used at very low levels, consumers typically cannot detect its presence in isolation, yet they perceive the integrated effect it has on final product quality. Its use spans both non-alcoholic and alcoholic beverages, where it augments fruit profiles without contributing off-notes or undesirable aftertastes. Across these applications, formulation experts balance 9-DECEN-2-ONE with other ingredients to achieve products that meet consumer expectations for flavor complexity and enjoyment.

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Safety & Regulations

FDA

  • Notes: Inclusion in FDA Substances Added to Food inventory does not equate to specific regulatory approval in CFR.

EFSA

  • Notes: Specific EFSA numeric ADI not found in authoritative deep link.

JECFA

  • Notes: No specific numeric JECFA ADI located on the d database; general evaluations exist.

Sources

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