ALPHA-BUTYLCINNAMALDEHYDE

CAS: 7492-44-6 FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT

**Alpha-Butylcinnamaldehyde** is a chemically defined flavor enhancer and flavoring agent used in food and beverage applications. It is characterized by a distinct floral aroma and is recognized in U.S. flavor inventories with regulatory reference to 21 CFR 172.515. **This compound has been evaluated by recognized food additive expert committees and flavor bodies for safety when used at typical flavoring levels.**

What It Is

Alpha-Butylcinnamaldehyde is a specific organic aldehyde compound used as a flavor enhancer and flavoring agent in food applications. This compound is listed with the Chemical Abstracts Service (CAS) number 7492-44-6 and is chemically part of the alpha-alkylcinnamaldehyde family. It has a characteristic floral and herbal scent profile that contributes to the sensory qualities of flavored products. In regulatory listings, it is identified as a flavoring agent and flavor enhancer under food additive regulations and appears in inventories such as the U.S. FDA Substances Added to Food database and the FEMA GRAS flavor ingredient library. Alpha-Butylcinnamaldehyde belongs to a class of unsaturated aldehydes structurally related to cinnamaldehyde, with a butyl group attached at the alpha position, which contributes to its sensory and chemical properties. The compound is often included among flavoring substances used to impart or modify aroma and taste characteristics at very low concentrations, where its presence is detectable but not overpowering. Its identity is confirmed by chemical nomenclature, CAS registry data, and structural analysis performed by authoritative chemical databases. This compound may be present in natural flavor extracts or synthetic flavor compositions formulated to achieve specific aromatic profiles. In the context of food science and flavor chemistry, understanding the molecular identity, sensory characteristics, and regulatory status of this compound is important for formulators and regulatory professionals. The CAS number links it to a unique chemical identity recognized across national and international regulatory systems, ensuring consistent reference in scientific literature, safety evaluations, and ingredient inventories.

How It Is Made

The manufacturing of Alpha-Butylcinnamaldehyde typically involves organic synthesis techniques common to the production of cinnamaldehydes and related aldehydic flavoring substances. Basic laboratory methods for producing unsaturated aldehydes such as alpha-alkylcinnamaldehydes involve condensation reactions between appropriate aldehyde precursors and aromatic aldehydes under controlled conditions. For example, one general route involves an aldol condensation between butanal and benzaldehyde or a derivative, followed by purification processes such as distillation or chromatography to obtain the target compound. Commercial suppliers that produce Alpha-Butylcinnamaldehyde follow defined quality specifications and employ standard industry practices for flavor chemical synthesis. These specifications are consistent with usage in food flavoring and fragrance applications, with purity criteria and quality controls aligned with recognized compendia and regulatory guidance for flavor ingredients. While detailed proprietary steps are not typically disclosed publicly due to industrial confidentiality, general synthetic rationale for aldehydes of this class is well established in organic chemistry texts and safety evaluations. In the production environment, manufacturers implement appropriate safety and environmental controls, such as containment, ventilation, and personal protective equipment for workers handling reactive aldehydes. Because alpha-alkylcinnamaldehydes are reactive chemical species, storage conditions, reaction monitoring, and waste handling are carefully managed to prevent degradation, contamination, and exposure risks. The end product is typically a pale yellowish oily liquid with defined organoleptic properties that meet flavor industry criteria.

Why It Is Used In Food

Alpha-Butylcinnamaldehyde is used in food because it contributes sensory properties that enhance the aromatic profile of formulated products. Flavor chemists select specific aldehydic compounds like this one to add subtle floral, green, or jasmine-like notes to complex flavor systems. Its use is predicated on the principle that when added at low concentrations, it can enhance consumer perception of flavor without overwhelming other components in a formulation. Flavor enhancers such as Alpha-Butylcinnamaldehyde help balance taste and aroma in a wide range of food categories, including beverages, confections, baked goods, and other prepared foods. They are integral components of flavor blends that seek to modify or amplify specific sensory attributes, often in combination with other natural and synthetic flavor constituents. The objective of using such compounds is to achieve a desired flavor character that aligns with product expectations while maintaining regulatory compliance. In practice, the selection of a flavoring agent is guided by its sensory profile, chemical compatibility with food matrices, stability under processing conditions, and regulatory acceptance. For example, alpha-alkylcinnamaldehydes may be chosen for their contribution to fruity or floral tones in a beverage formulation or to complement spice notes in savory products. Manufacturers of flavored foods and beverages rely on flavor houses and expert panels to determine appropriate usage levels that provide the desired effect without exceeding sensory thresholds or regulatory guidelines.

Adi Example Calculation

An illustrative explanation of how an ADI-based calculation might work can help clarify the concept, even when no specific ADI is assigned for certain compounds. For example, if a flavoring agent had an ADI of X mg per kg of body weight per day, a person weighing 70 kg would have an allowable intake of 70 * X mg per day. This hypothetical framework helps food scientists and regulators understand how exposure estimates relate to safety thresholds. While Alpha-Butylcinnamaldehyde does not have a defined numerical ADI in major evaluations, similar calculations demonstrate the role of ADIs in safety assessment. Using an assigned ADI for another flavoring agent as a benchmark, the calculation shows how intake limits scale with body weight. For instance, with an ADI of 1 mg per kg body weight per day, a 70 kg adult would have an illustrative allowable intake of 70 mg per day. Food producers use such benchmarks to compare estimated consumer intake with safety thresholds. This general approach underscores how ADIs inform regulatory decisions and safety evaluations, helping ensure that ingredient usage levels remain within acceptable bounds. The absence of a numerical ADI for Alpha-Butylcinnamaldehyde in official evaluations indicates that typical usage levels and exposures are not associated with safety concerns that would necessitate a specific numeric limit.

Safety And Health Research

Safety evaluations of Alpha-Butylcinnamaldehyde have been performed by established expert bodies focusing on food additive safety and flavor ingredient assessment. These evaluations typically consider toxicological data, estimated intake levels, and chemical properties relevant to potential health effects. For example, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) examined this compound in a documented session and concluded that, at typical levels of intake as a flavoring agent, there was no safety concern. This conclusion is reported in evaluation summaries prepared by JECFA. Similarly, the FEMA Expert Panel evaluates flavoring substances on a body of evidence that includes structure-activity relationships, available toxicological data, and comparative analysis with related compounds. FEMA’s GRAS determination for this compound (FEMA No. 2191) indicates that experts consider its use in accordance with intended conditions safe. Published literature and chemical safety databases note that some aldehydes can be irritants or sensitizers in occupational or concentrated exposure contexts, but such observations are distinct from dietary exposure through flavored foods. At the concentrations used for flavoring, regulatory and expert assessments focus on overall safety margins and typical intake patterns rather than occupational exposure risks. These safety evaluations emphasize exposure at low levels consistent with flavor use in food formulations. Overall, research and evaluations indicate that Alpha-Butylcinnamaldehyde does not pose safety concerns when used as intended in flavored food products. Continued monitoring of toxicological data and regulatory reviews helps ensure that any new evidence is incorporated into safety assessments.

Regulatory Status Worldwide

Alpha-Butylcinnamaldehyde is included in key regulatory and expert inventories related to flavoring substances. In the United States, this compound is referenced in the Substances Added to Food inventory (formerly known as EAFUS) with a regulatory citation under 21 CFR 172.515 for flavoring agents and flavor enhancers. This listing indicates that it has been the subject of evaluation and is recognized for use as a flavoring substance when used in accordance with good manufacturing practice conditions. The reference to 21 CFR 172.515 reflects its status in U.S. food additive regulations. Internationally, the Flavor and Extract Manufacturers Association (FEMA) identifies this ingredient under FEMA GRAS reference number 2191. FEMA’s expert panel conducts independent safety evaluations of flavoring substances and publishes findings that support their “generally recognized as safe” status under conditions of intended use in food. The FEMA listing for this compound reflects expert evaluation of toxicological and usage data. At the international level, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluated Alpha-Butylcinnamaldehyde as a flavoring agent (JECFA number 684) in session reports, concluding that there was no safety concern at current levels of intake when used as a flavoring agent. JECFA evaluations typically examine toxicology data, intake estimates, and other relevant evidence to assess safety. However, no specific acceptable daily intake (ADI) value is established in the evaluation, indicating that the committee did not identify a need for a numerical limit based on typical exposure patterns. Because regulatory frameworks differ by region, product developers must consult local regulations in markets where products will be sold. While Alpha-Butylcinnamaldehyde is recognized in key inventories, specific use levels and labeling requirements may vary across jurisdictions.

Taste And Functional Properties

The taste and functional properties of Alpha-Butylcinnamaldehyde are defined by its molecular structure and sensory attributes. Aldehydes of this type are known for pronounced aromatic characteristics that can influence perceived flavor quality in low concentrations. Specifically, Alpha-Butylcinnamaldehyde is described as having floral, green, and lily-like aromatic notes, which can contribute desirable complexity to flavor profiles when balanced with other ingredients. Functionally, this compound is not used for nutritional contributions or textural modification, but primarily for its olfactory and flavor-enhancing effects. In flavor design, sensory scientists evaluate descriptors such as intensity, persistence, and character profile to determine how a compound like this interacts with other components in the system. These assessments help formulate products that deliver consistent and appealing sensory experiences to consumers. Beyond sensory contributions, functional considerations include the chemical stability of the compound under typical food processing conditions. Aldehydes can be reactive under heat or in the presence of oxidizing agents, so formulators must consider process conditions and potential interactions with other ingredients. Solubility characteristics—typically limited in water and more compatible with ethanol or lipid phases—also influence how this compound partitions in complex food matrices. Overall, the combination of sensory impact and functional behavior guides the use of Alpha-Butylcinnamaldehyde as a flavoring agent. Flavorists balance its properties with other components to create harmonious sensory outcomes that align with product design goals.

Acceptable Daily Intake Explained

The concept of an acceptable daily intake (ADI) is a risk assessment tool used by expert bodies to express the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. ADIs are typically established when data allow for quantification of a safety threshold based on toxicological studies in animal models and human data when available. For some flavoring agents and additives, such as Alpha-Butylcinnamaldehyde, expert panels have not established a specific numerical ADI because evaluations concluded there was no safety concern at current estimated levels of intake. JECFA, for example, concluded in its evaluation that no safety concern exists at normal intake levels for this compound as a flavoring agent, implying that typical dietary exposures are well below levels associated with effects in toxicological studies. When a specific ADI is not assigned, it reflects a determination that the available evidence does not indicate a need for a quantitative limit based on typical use patterns. It is important to understand that an ADI is not a recommended target level of intake for individuals but rather a conservative safety benchmark used by regulators and risk assessors. Expert panels apply uncertainty factors to account for variability between species and within human populations, ensuring that the ADI is protective across diverse groups. In the case of flavoring substances with no numerical ADI specified, regulatory and safety frameworks still guide acceptable use conditions.

Comparison With Similar Additives

Alpha-Butylcinnamaldehyde can be compared with other structurally related flavoring aldehydes such as alpha-hexylcinnamaldehyde and alpha-methylcinnamaldehyde. All belong to a family of alpha-alkylcinnamaldehydes used in flavor and fragrance applications due to their aromatic properties. Differences between them arise from the specific alkyl chain attached to the alpha position, which influences sensory notes and intensity. For example, alpha-hexylcinnamaldehyde contains a longer alkyl chain, which may impart a slightly different scent character compared with the butyl derivative. Similarly, alpha-methylcinnamaldehyde has a shorter alkyl group and a distinct sensory profile. While these compounds share functional roles as flavoring agents, formulators choose them based on desired aromatic nuances and compatibility with the broader flavor system. From a regulatory perspective, each compound has been evaluated on its own merits by expert panels and regulatory agencies. Some may have established conditions of use or literature documenting ADI values, while others are recognized as safe at typical usage levels without specific numeric ADIs. These comparative insights highlight how structural differences correlate with sensory characteristics and regulatory considerations.

Common Food Applications Narrative

Alpha-Butylcinnamaldehyde finds its place in a broad array of flavored food products because of its ability to contribute nuanced aroma and taste enhancements. In beverages, it can be used to accent floral or green notes in nonalcoholic drinks or flavored waters. Within confectionery applications, this compound contributes subtle aromatic qualities that complement sweet and fruity profiles without imparting overt strength that could disrupt product balance. Flavor houses draw on individual components like Alpha-Butylcinnamaldehyde as building blocks in complex formulations. When used judiciously, it helps refine the overall sensory impression of a food product, whether it is a baked good, dairy-based dessert, or snack item. In frozen desserts and ice cream products, for instance, floral notes may enhance the perception of fruit flavors or balance richness in creamy bases. Baked goods and snack foods also benefit from nuanced flavor modifiers that enhance the appeal of multifaceted flavor systems. In savory applications, floral or green aldehydic notes may be blended to round out spice profiles or to add intrigue to seasoning blends. Because of its specific sensory profile, the compound is not a dominant flavor but rather a component that supports and enriches more prominent taste themes. Developers of flavored foods and beverages work with regulatory and sensory professionals to determine safe and effective use levels. These use levels are informed by expert panel evaluations and regulatory references, which establish conditions under which the ingredient is recognized as safe for its intended use when added at appropriate concentrations.

Safety & Regulations

FDA

  • Notes: Included in Substances Added to Food inventory with reference to 21 CFR 172.515; specific formal approval standard not explicitly stated on d source.
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: EFSA-specific regulatory status and numerical ADI not identified in the d sources.

JECFA

  • Notes: JECFA evaluation concluded no safety concern at typical intake but did not specify a numeric ADI on the d summary.

Sources

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