8,9-DEHYDROTHEASPIRONE

CAS: 85248-56-2 FLAVORING AGENT OR ADJUVANT

8,9-DEHYDROTHEASPIRONE is a chemical compound identified by CAS 85248-56-2 used primarily as a flavoring agent in food and beverage applications. It has been evaluated by the Joint FAO/WHO Expert Committee on Food Additives as a flavoring substance and is listed in food ingredient inventories.

What It Is

8,9-DEHYDROTHEASPIRONE is a synthetic organic compound used in food applications for its flavoring properties. Identified by the Chemical Abstracts Service registry number 85248-56-2, this substance belongs to a class of compounds often employed to impart or modify aroma and taste in food formulations. Other chemical identifiers include names such as 8,9-DEHYDROTHEASPIRONE 1-oxaspiro[4.5]deca-2,6-dien-8-one and 2,6,10,10-tetramethyl spiro derivatives that reference its structural features. Because flavoring agents serve a technical function in food processing, 8,9-DEHYDROTHEASPIRONE does not contribute nutritional value but is intended for sensory impact. In regulatory contexts, 8,9-DEHYDROTHEASPIRONE appears in international food additive inventories and expert committee evaluations that focus on flavor compounds. It is commonly associated with woody, camphoraceous aroma descriptors and is included in flavor libraries maintained by industry and risk assessment bodies. The compound is typically encountered in minute amounts consistent with flavor use patterns rather than bulk food ingredients. Its categorization as a "flavoring agent or adjuvant" reflects its role in enhancing or modifying organoleptic properties rather than serving as a preservative, nutrient, or processing aid.

How It Is Made

The manufacture of 8,9-DEHYDROTHEASPIRONE generally involves organic synthesis techniques that yield a spirocyclic compound with specific stereochemistry. Although detailed proprietary manufacturing processes are not typically disclosed in commercial or regulatory dossiers, the compound is synthesized by skilled chemists using precursor molecules that allow for the construction of the oxaspiro ring system characteristic of this flavoring agent. Common steps in the synthesis of spiro compounds include controlled cyclization reactions and purification strategies to ensure the desired isomer is obtained with high purity. This may involve fractional distillation, crystallization, or chromatographic techniques to isolate the final product. In industrial settings, flavoring compounds such as 8,9-DEHYDROTHEASPIRONE are produced under strict quality control conditions to meet specification standards appropriate for food use. These specifications, often outlined in expert committee documents, include criteria for identity, purity, and permissible levels of impurities. Purity is particularly important for flavor compounds because trace impurities can influence odor and taste, potentially leading to off-notes in the finished product. Manufacturers must also adhere to good manufacturing practices (GMP) to prevent contamination, ensure consistent quality, and document their processes. Finally, suppliers of flavoring compounds typically provide certificates of analysis (COAs) that attest to the chemical identity and quality of each batch. While the compound’s synthesis route may vary between manufacturers, all routes aim to produce material that behaves predictably in food matrices and meets safety expectations established by expert scientific committees.

Why It Is Used In Food

8,9-DEHYDROTHEASPIRONE is incorporated into food and beverage formulations to enhance or modify sensory characteristics, particularly aroma. Flavoring agents are essential components of the modern food industry, enabling manufacturers to create consistent flavor profiles across diverse product lines. Food scientists select specific flavoring compounds like 8,9-DEHYDROTHEASPIRONE to achieve woody or camphoraceous notes that complement other ingredients and consumer taste expectations. Flavor compounds serve technical functions that extend beyond simple taste augmentation. They can help mask undesirable flavors originating from processing, storage, or interaction with other ingredients. In complex formulations, such as beverages, confectionery products, and savory snacks, a carefully balanced palette of flavor compounds contributes to overall product acceptance. 8,9-DEHYDROTHEASPIRONE’s woody profile may be used sparingly in blends to add depth and complexity without overwhelming other flavor components. Additionally, flavoring agents can improve product consistency. Natural ingredients alone may vary in flavor due to seasonal differences, agricultural conditions, or supply chain variability. The inclusion of well-characterized synthetic flavor compounds allows manufacturers to mitigate these inconsistencies. Because flavor perception is subjective and influenced by cultural and individual preferences, flavor chemists often employ a range of agents to fine-tune profiles that appeal to target demographics. The decision to use 8,9-DEHYDROTHEASPIRONE in a specific application reflects both its sensory attributes and its compatibility with other formulation requirements.

Adi Example Calculation

To illustrate how an acceptable daily intake (ADI) might be contextualized, consider a hypothetical scenario where a flavoring agent had a numeric ADI. If a compound had an ADI of 1 mg per kilogram of body weight per day, a person weighing 70 kilograms (about 154 pounds) would have an intake threshold of 70 milligrams per day. However, because 8,9-DEHYDROTHEASPIRONE has been evaluated by expert bodies and found to pose no safety concern at current levels of intake as a flavoring agent, no numeric ADI is specified. Therefore, the example calculation above is purely illustrative of how an ADI is applied in general contexts, and does not reflect a regulatory value assigned specifically to this compound. Flavoring agents are typically used in parts per million or lower in food products to achieve sensory effects. This means that even if an ADI were assigned, actual dietary exposure from normal consumption patterns would generally be far below any threshold of toxicological concern. The use of hypothetical calculations helps stakeholders understand how ADI values relate to body weight and exposure, but the absence of a numeric ADI for 8,9-DEHYDROTHEASPIRONE indicates that its typical use is within safety expectations established by expert assessments.

Safety And Health Research

Scientific evaluation of 8,9-DEHYDROTHEASPIRONE has focused on its properties as a flavoring agent and assessments by expert bodies that consider toxicological data in the context of likely human exposure. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluated this compound, assigning it a specific chemical designation and functional class and concluding that at consumption levels typical for flavoring agents there is no safety concern. Such evaluations are narrative summaries of available data, including toxicology reports, metabolism studies, and structure-activity considerations, that allow experts to judge the risk associated with typical use patterns. Expert committees like JECFA and the FEMA GRAS panel review various endpoints in their assessments, such as genotoxicity, subchronic toxicity, reproductive and developmental effects, and other hazard indicators. These evaluations are designed to identify any potential risks associated with dietary exposure that could be of concern. For flavoring substances, because the use levels are generally low relative to other food additives, the exposure is correspondingly limited, which factors into risk assessments. The determination of no safety concern at current intake levels reflects this risk-based approach, which weighs exposure against hazard data. It is important to note that specific human clinical or epidemiological studies detailing physiological responses to 8,9-DEHYDROTHEASPIRONE are not routinely published in regulatory summaries, and the compound’s sensory effects are primarily considered in the context of formulation rather than health endpoints. Scientific evaluation thus emphasizes technical function, exposure estimates from food use, and general toxicological profiles, rather than direct health outcomes. The compound’s classification by expert bodies indicates that it has been subject to professional review within the framework of established food additive safety assessment methodologies.

Regulatory Status Worldwide

The regulatory status of 8,9-DEHYDROTHEASPIRONE reflects its evaluation by expert committees and listing in food additive inventories rather than explicit approval in codified regulations. It appears in flavoring substance inventories such as the Substances Added to Food inventory maintained by the U.S. Food and Drug Administration, which incorporates data from the Flavor and Extract Manufacturers Association (FEMA) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA). Inclusion in such inventories indicates that the compound has been recognized as a flavoring agent evaluated in expert assessments, but it does not, by itself, constitute an explicit FDA food additive regulation in the Code of Federal Regulations. Accordingly, formal regulatory approval statements per specific CFR parts are not available in the public record, and therefore definitive numeric references to U.S. regulations are not included here. 8,9-DEHYDROTHEASPIRONE’s presence in expert evaluations suggests that regulatory bodies and committees responsible for food safety have considered its use in food contexts and have documented its technical function. At the international level, JECFA has evaluated 8,9-DEHYDROTHEASPIRONE as a flavoring substance, assigning it a JECFA number and concluding that, at current levels of intake as a flavoring agent, it does not pose safety concerns. While this assessment informs member countries and Codex Alimentarius considerations, it does not equate to an international additive number (INS) in the Codex system, which is typically assigned to food additives with established categories. Similarly, European regulatory authorities such as the European Food Safety Authority (EFSA) have mechanisms for flavoring evaluation, but specific E-number assignments or numerical acceptable daily intake values for this compound are not provided in available authoritative sources. The compound’s listing in flavor libraries maintained by FEMA and documented in expert committee reports underscores its recognized status in flavor science and food formulation.

Taste And Functional Properties

8,9-DEHYDROTHEASPIRONE is described in flavor libraries as having a woody and camphor-like odor profile. These sensory attributes make it suitable for flavor blends where a subtle woody or green note is desired. In taste panels, compounds with this profile are often used in small concentrations due to their potent olfactory characteristics relative to their mass. The compound’s functional properties in foods include its ability to volatilize under consumption conditions, contributing to aroma rather than taste on the tongue. Aroma is a crucial aspect of flavor perception because it significantly influences how consumers interpret taste. From a functional perspective, the volatility and stability of flavoring agents are key considerations for their use. Compounds must remain stable during processing, which may involve heat, pH changes, and interaction with fats, sugars, or proteins. While specific stability data for 8,9-DEHYDROTHEASPIRONE are not typically published in public regulatory sources, flavor chemists account for general principles such as volatility and solubility when selecting compounds. Many flavor molecules are more soluble in organic phases than in water, influencing how they are dispersed in complex food matrices. Additionally, interactions with other ingredients can alter perceived aroma. For example, encapsulation techniques may be used to protect volatile compounds during processing and release them during consumption. Sensory scientists evaluate these behaviors through trained panels and analytical chemistry methods to ensure that the intended flavor effect is achieved. In summary, the sensory and functional properties of 8,9-DEHYDROTHEASPIRONE make it a useful ingredient in the palette of flavor compounds employed by food developers.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a metric used by food safety authorities to describe the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. ADIs are typically expressed in milligrams of the substance per kilogram of body weight per day and are derived from toxicological data using conservative safety factors. However, for many flavoring agents, including 8,9-DEHYDROTHEASPIRONE, regulatory evaluations do not establish a numeric ADI because expert committees have determined that at the levels of typical intake as a flavoring agent there is no safety concern. Instead of specifying a numerical ADI, evaluations comment qualitatively on the lack of identified risks at current exposure levels. It is important to understand that the absence of a numerical ADI does not imply unrestricted use; rather, it indicates that, based on available data and anticipated exposure from normal use in food, the substance is not expected to pose a risk. Regulatory frameworks for flavoring agents often rely on expert judgment combined with exposure assessment to reach conclusions about safety. In practice, the concentration of flavoring substances used in food products is typically orders of magnitude lower than levels that would raise toxicological concerns. Flavor chemists and regulatory scientists work together to ensure that usage levels remain within bounds that are consistent with both sensory objectives and safety considerations. In summary, the concept of ADI is foundational to risk assessment in food safety, and for 8,9-DEHYDROTHEASPIRONE, expert evaluations have not identified a need to set a specific numeric ADI, instead confirming that typical use as a flavoring agent does not raise safety concerns.

Comparison With Similar Additives

8,9-DEHYDROTHEASPIRONE can be compared with other flavoring agents that serve similar aromatic functions in food and beverage applications. For example, woody or green aroma compounds such as cis-3-hexenol provide fresh, leafy notes commonly used in beverage and savory formulations. Similarly, compounds like p-cymene, which has a mild herbal or citrus character, serve as complementary aroma constituents in complex flavor blends. While all these compounds contribute to aroma profiles, they differ in potency, volatility, and sensory impact, leading flavor chemists to select specific agents based on the desired effect. Another comparison can be made with lactones such as gamma-octalactone, which deliver creamy, coconut-like nuances in sweet applications. Although gamma-octalactone and 8,9-DEHYDROTHEASPIRONE both function as flavoring agents, their sensory roles differ markedly: one emphasizes creamy sweetness while the other emphasizes woody or camphoraceous notes. These distinctions highlight how compounds with different chemical structures and sensory properties are employed strategically to achieve targeted flavor profiles. Finally, terpenoid-derived compounds like linalool, which has floral and citrus characteristics, illustrate the diversity of functional sensory outcomes that flavoring agents can provide. Whereas linalool is often used in fruity or floral applications, 8,9-DEHYDROTHEASPIRONE’s woody character may be better suited for blending with green or herbal components. Such comparisons underscore the importance of understanding both sensory attributes and functional behavior in food matrices when selecting flavor additives.

Common Food Applications Narrative

Flavoring agents such as 8,9-DEHYDROTHEASPIRONE find broad application across a range of food and beverage categories where nuanced aroma profiles contribute to consumer enjoyment. In beverage applications, subtle woody or green notes can complement fruit, herbal, or tea-based flavors, providing complexity without dominating the overall sensory impression. For example, in ready-to-drink teas or botanical-infused beverages, small amounts of woody aroma compounds can enhance perceived freshness or balance sweetness. In confectionery and sweet products, flavor scientists may use aroma compounds to complement sugar and creamy notes. Products like hard candies, flavored syrups, or gel-based sweets often rely on a layered flavor profile where woody or secondary notes add depth. Because consumer preferences for sweetness and aroma are interlinked, careful balancing of sensory attributes is critical. Flavoring agents help create memorable taste experiences that align with brand and product identities. Savory applications also benefit from tailored aroma profiles. Snack foods, seasonings, and sauces often employ a blend of flavor compounds to achieve the desired savory, umami, or aromatic notes. In dry seasonings, for example, woody notes may enhance herbaceous characteristics or bridge flavor transitions between different spice components. The versatility of flavoring agents extends to dairy analog products, where the absence of natural dairy flavor may be compensated by synthetic aroma compounds to approximate familiar profiles. Across all applications, formulation considerations such as compatibility with processing temperatures, ingredient interactions, and regulatory compliance guide the use of flavoring agents. The presence of 8,9-DEHYDROTHEASPIRONE in ingredient inventories indicates its utility as part of a broader flavor development toolkit, enabling food scientists to deliver consistent sensory experiences that resonate with consumer expectations.

Safety & Regulations

FDA

  • Notes: The compound appears in the FDA Substances Added to Food inventory but does not have a specific food additive regulation citation indicating formal approval.

EFSA

  • Notes: No specific EFSA E-number or ADI value could be found in authoritative sources.

JECFA

  • Notes: JECFA concluded no safety concern at typical intake levels but did not assign a numeric ADI value on the d page.
  • Adi Display: No safety concern at current levels of intake

Sources

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