6-DECENOIC ACID

CAS: 85392-04-7 FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT

6-DECENOIC ACID (CAS 85392-04-7) is an unsaturated medium‑chain fatty acid used as a flavoring agent and flavor enhancer in food formulations with a characteristic dairy‑like odor.

What It Is

6-DECENOIC ACID is a linear, unsaturated medium‑chain fatty acid with the molecular formula C10H18O2 that is used in food applications primarily as a flavor enhancer and flavoring agent. The compound bears the CAS registry number 85392‑04‑7 and the same name 6‑DECENOIC ACID in common usage. Chemically, it contains a double bond at the 6th carbon position of a ten‑carbon fatty acid backbone, which contributes to its sensory and chemical behavior in food systems. As a flavoring agent, this ingredient is typically incorporated to accentuate, complement, or modify the inherent flavors of other food constituents. In its pure form, 6‑DECENOIC ACID is typically a liquid under standard conditions. It is part of a broader class of aliphatic carboxylic acids, some of which occur naturally in foods and are used in the flavor industry to impart specific sensory characteristics. In regulatory inventories, it may be referenced by its CAS number and by functional descriptions such as flavor enhancer or flavoring adjuvant. It is distinct from other decenoic acid isomers with different chain positions or stereochemistry, but it shares common functional properties with them where they are used in flavor applications.

How It Is Made

The production of 6‑DECENOIC ACID for food‑grade use typically involves chemical synthesis routes that build the unsaturated fatty acid chain at the desired carbon position. Industrially, unsaturated fatty acids such as 6‑DECENOIC ACID are synthesized through catalytic processes that elongate and introduce the double bond into the aliphatic chain. These may include olefin metathesis, selective hydrogenation, or other controlled organic reactions tailored to yield the specific positional isomer required for flavor applications. Once synthesized, 6‑DECENOIC ACID undergoes purification steps to achieve a level of purity suitable for food use. Purification may involve distillation, crystallization, or chromatography to remove reaction byproducts and ensure that the compound meets flavor industry standards for identity and quality. Finished food‑grade materials are characterized for key parameters such as purity, odor profile, and absence of contaminants to ensure they are appropriate for inclusion in flavor formulations. The manufacturing processes utilized must adhere to relevant chemical safety and food quality requirements, and producers often document these in product specifications and certificates of analysis. Because of its chemical activity, synthesis and purification are carried out under controlled environments to protect both product integrity and worker safety.

Why It Is Used In Food

6‑DECENOIC ACID is used in food primarily for its ability to enhance and modify flavor profiles. Flavor enhancers work by improving the intensity or complexity of existing flavors in food products, allowing manufacturers to achieve desired sensory experiences without excessively increasing costs or using higher levels of base ingredients. When formulated as a flavoring agent or adjuvant, 6‑DECENOIC ACID can contribute subtle dairy‑like or buttery notes that support flavor systems, particularly in food categories where such sensory nuances are desirable. In flavor formulation, compounds like 6‑DECENOIC ACID interact with other ingredients to create balanced and rounded flavor profiles. Their inclusion can help bridge gaps between other aroma components, add depth to flavor complexity, and make certain food products more palatable. Its utility as a flavoring agent lies in both its sensory characteristics and its compatibility with a range of other flavor compounds used in the food industry. Technologically, flavor enhancers and flavoring agents are selected not only for sensory impact but also for performance in varying food matrices. Factors such as solubility, stability under processing conditions (heat, pH changes), and interaction with other food components influence why a given additive is chosen. In this context, 6‑DECENOIC ACID provides formulators with an ingredient that supports targeted flavor outcomes in applications where fatty, creamy, or dairy‑like nuances are intended.

Adi Example Calculation

Because a specific numeric ADI for 6‑DECENOIC ACID alone has not been established in authoritative evaluations, this section illustrates the general principle rather than applying a numeric ADI for this compound. For example, if a hypothetical ADI were established at a value X mg/kg body weight per day by a regulatory body, a person weighing 70 kg would have a theoretical maximum daily intake of 70 times X mg per day. Actual daily intake from food would likely be orders of magnitude lower than this hypothetical value, given typical usage concentrations in flavor formulations. This illustration is meant to explain how ADI calculations work and does not represent an established ADI for 6‑DECENOIC ACID.

Safety And Health Research

Safety assessments of flavoring agents like 6‑DECENOIC ACID typically focus on their toxicological profile at levels relevant to human exposure in food. International expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) assess available data on absorption, metabolism, and potential adverse effects to determine whether a substance presents safety concerns under expected use scenarios. For the mixture of 5‑ and 6‑DECENOIC ACID evaluated under JECFA number 327, the committee reported no safety concern at current levels of intake, supporting its use as a flavoring agent. This kind of evaluation considers factors such as exposure estimates and existing toxicological data, and conclusions are specific to the context of flavoring use rather than high‑dose exposure scenarios. In general, unsaturated fatty acids that occur naturally in foods share metabolic pathways with endogenous fatty acids and are processed by normal digestive and metabolic systems at the low levels used in flavor formulations. Regulatory evaluations consider whether any structural features could raise concerns such as genotoxicity or chronic toxicity, but for 6‑DECENOIC ACID under conditions of intended use, expert bodies have not identified specific risks warranting restriction at typical exposure levels. It is important to note that safety assessments are periodically reviewed as new data become available, and regulatory status can evolve with updated evidence.

Regulatory Status Worldwide

In the United States, 6‑DECENOIC ACID is listed in the FDA’s "Substances Added to Food (formerly EAFUS)" inventory with the CAS number 85392‑04‑7 as a substance used as a flavor enhancer and flavoring agent or adjuvant, and this listing reflects its recognized presence in flavor applications according to available inventory data. Its inclusion in this inventory signals that it is known to be used in food flavoring contexts in the US food supply. However, inclusion in the inventory does not imply a specific FDA regulation approving it under a food additive petition or a CFR section; therefore, regulatory_ safety.fda.approved is set to null and explanatory notes are provided. On the international level, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated 5‑ and 6‑decenoic acid mixtures for flavoring use and determined that at current levels of intake as flavoring agents there is no safety concern. This evaluation is reflected in JECFA database summaries and supports the technical use of such compounds within flavoring applications under conditions of intended use. No specific numeric acceptable daily intake (ADI) value appears to be established for 6‑DECENOIC ACID alone in available evaluations, and specific e‑number or EU approvals for the isolated compound were not found in authoritative EFSA documents during this research. Regulatory environments vary by jurisdiction, and the exact permissibility and labeling requirements for additives in food products depend on national or regional food regulations. Food ingredient inventories and flavoring agency assessments provide guidance on the use and safety evaluation of such compounds.

Taste And Functional Properties

In sensory evaluation, 6‑DECENOIC ACID is described as having dairy‑like, milky, or buttery odor notes when used in flavoring contexts. These sensory attributes are characteristic of certain medium‑chain unsaturated fatty acids that contribute to complex flavor profiles in food products. The presence of a double bond in the 6th carbon position influences how the molecule interacts with olfactory receptors and other flavor components. From a functional standpoint, 6‑DECENOIC ACID is typically used in small concentrations within flavor blends. Its solubility properties make it compatible with alcohol‑based flavor systems and certain emulsions. It is less soluble in water compared to polar compounds, which is common for fatty acid‑type substances, and this influences how it is formulated into finished flavor preparations. Flavor formulation also considers the stability of such compounds under typical food processing conditions. While 6‑DECENOIC ACID can withstand a range of conditions, its sensory attributes may shift with exposure to extreme heat or oxidation. As a result, formulation strategies often pair it with stabilizers or antioxidants when needed to preserve the desired flavor profile throughout processing and shelf life.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is an estimate of the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on toxicological data and applying safety factors. For flavoring agents such as 6‑DECENOIC ACID, specific numeric ADI values are not always established, particularly when expert evaluations conclude that at typical exposure levels from food use there is no safety concern. In the case of 5‑ and 6‑decenoic acid mixtures evaluated by JECFA, the assessment concluded no safety concern at current intake levels, and no distinct ADI was assigned for 6‑DECENOIC ACID alone, leading to regulatory_safety.jecfa.adi_mg_per_kg and related fields being set to null. Consumers should understand that ADI values are regulatory risk assessment tools and are not recommendations for consumption. They represent levels well above typical dietary exposure and incorporate conservative safety factors. In practical use, flavoring agents are employed at levels much lower than thresholds that would raise safety concerns, and regulatory inventories reflect these use patterns and evaluations.

Comparison With Similar Additives

6‑DECENOIC ACID can be compared with other medium‑chain unsaturated fatty acids used as flavoring agents, such as 5‑decenoic acid and certain lactones used for dairy‑like or creamy notes. These compounds share structural features that influence their volatility and sensory qualities, and their use in flavor systems is guided by similar considerations of how they contribute to overall flavor balance. While specific ADI values or regulatory statuses may differ among these additives, expert evaluations generally consider them safe at typical flavoring use levels. Differences in regulatory listings and GRAS or inventory status reflect variations in how much data are available and how extensively they have been reviewed by regulatory or expert bodies rather than fundamental safety differences when used correctly.

Common Food Applications Narrative

6‑DECENOIC ACID finds utility in a range of food categories where nuanced flavor enhancement is needed. It is particularly relevant in products that benefit from creamy or dairy‑like characteristics, including certain dairy analogs, savory sauces, bakery products, and confectionery items with complex flavor layers. In these product contexts, small amounts of specialized flavor enhancers help achieve balanced and appealing flavor profiles without overpowering the primary ingredients used in the formulation. Manufacturers aiming to replicate specific sensory experiences—such as the richness of dairy or subtle fatty notes—may incorporate 6‑DECENOIC ACID in flavor systems that support that objective. It may be combined with other flavoring molecules to create tailored blends for particular product lines, including flavored beverages, snack foods, or specialty dessert products. Because the compound contributes subtle aromatic nuances rather than primary flavor character, it is rarely used in isolation but instead as part of an integrated flavor design approach. Product developers also use such compounds to maintain desirable sensory properties over the shelf life of a product, ensuring that the consumer experience remains consistent. In doing so, they account for interactions with other formulation components and processing conditions, selecting flavor enhancers that align with both sensory goals and technical performance metrics.

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Safety & Regulations

FDA

  • Notes: Inclusion in the EAFUS inventory indicates known use as a flavoring agent but does not represent a specific FDA regulation approval.

EFSA

  • Notes: No specific EFSA additive listing or numeric ADI found in available authoritative sources.

JECFA

  • Notes: JECFA concluded no safety concern at current intake levels for 5‑ and 6‑decenoic acid mixtures but did not assign a numeric ADI.

Sources

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