BETA-CARYOPHYLLENE OXIDE

CAS: 1139-30-6 FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT

Beta-Caryophyllene Oxide (CAS 1139-30-6) is a naturally occurring bicyclic sesquiterpene epoxide evaluated for use as a flavoring agent and flavor enhancer in foods, recognized in flavor industry references with assigned FEMA and JECFA numbers and listed under 21 CFR 172.515 for allowable food use.

What It Is

BETA-CARYOPHYLLENE OXIDE is a sesquiterpene epoxide compound identified by CAS 1139-30-6 and recognized in flavor and extract industry literature with a FEMA GRAS reference of 4085 and JECFA number 1575. It is structurally a bicyclic molecule with a characteristic epoxide ring that is part of the larger class of terpenic compounds. Its functions are identified as a FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, used to add or modify sensory profiles in food formulations with woody, spicy, and aromatic notes. The compound appears in regulatory listings indicating its technical use as permitted under certain food additive provisions and flavoring regulations. The classification of BETA-CARYOPHYLLENE OXIDE as a flavoring agent comes from expert evaluations that consider its sensory contribution and safety for consumption when used at typical levels in food. It is also cataloged in flavor ingredient inventories and databases that support its use in food applications. Its presence in many essential oils and plant extracts such as cloves, basil, hops, and pepper underlies traditional and modern use in flavor enhancement. Like many terpenes, it balances sensory impact with formulation versatility, and its identification in authoritative flavor libraries and JECFA evaluations underscores its recognized role in food flavoring applications.

How It Is Made

The manufacture of BETA-CARYOPHYLLENE OXIDE in commercial applications generally involves isolation from natural plant sources rich in caryophyllene sesquiterpenes or chemical transformation of related terpenes. Many plants such as black pepper, clove, basil, and hops produce caryophyllene compounds in their essential oils, and these can be extracted and then oxidized to yield the epoxide form. Industrial production may employ controlled oxidation of beta-caryophyllene under specific reaction conditions to introduce the epoxide ring, followed by purification steps to achieve high purity suitable for use in flavorings. Extraction from plant materials typically uses steam distillation or solvent extraction to gather essential oils, followed by chromatographic separation and chemical modification where needed. In alternative approaches, synthetic organic chemistry techniques can generate the compound starting from commercially available feedstocks. The choice between natural extract and synthetic production depends on desired purity, cost, and regulatory labeling considerations. In manufacturing contexts, quality control assesses the identity and purity of the compound using analytical methods such as gas chromatography and mass spectrometry. This ensures the final product meets flavoring standards and is consistent with specifications defined in food additive monographs and industry quality systems.

Why It Is Used In Food

BETA-CARYOPHYLLENE OXIDE is used in food primarily for its ability to enhance or impart specific flavor characteristics. As a FLAVOR ENHANCER and FLAVORING AGENT OR ADJUVANT, it contributes woody, spicy, and aromatic notes that complement savory and complex food profiles. Its function in formulations is to refine taste perception, support a balanced flavor profile, and provide depth to flavor blends in beverages, confectionery, sauces, snacks, and other culinary products. In practical terms, flavor chemists utilize this compound to round out and harmonize flavor systems, especially where botanical, herbal, or spice-like qualities are desired. Its volatility and sensory impact make it a useful ingredient in both aqueous and lipid-based food systems. The adjuvant role can help other flavor components express their characteristics more effectively, increasing overall palatability. The use of this additive aligns with consumer expectations for nuanced, natural-tasting products and offers manufacturers flexibility in achieving target flavor profiles without overwhelming primary ingredients. Its inclusion is often subtle, tuned to complement rather than dominate the sensory experience.

Adi Example Calculation

Because a numeric ADI is not explicitly available from the referenced regulatory evaluations, we can illustrate the concept of how such an intake guideline might relate to real-world context without prescribing specific values. Hypothetically, if an additive were assigned a numeric ADI, one would multiply that value by a body weight (for example, 70 kilograms) to estimate the amount that could be consumed daily over a lifetime without appreciable risk. This illustrative explanation is purely conceptual and does not reflect a specific numeric ADI for BETA-CARYOPHYLLENE OXIDE. Instead, it demonstrates how ADIs are generally applied, reinforcing that safety evaluations consider both exposure and toxicological data.

Safety And Health Research

Safety evaluations for BETA-CARYOPHYLLENE OXIDE focus on potential hazards relative to expected exposure levels in food. The compound has been assessed by international expert bodies that consider toxicological endpoints such as genotoxicity, repeat-dose toxicity, and other relevant safety parameters. In the JECFA evaluation, it was concluded that there is no safety concern at levels of intake typical for flavoring use, reflecting a risk assessment that balances potential hazard against actual dietary exposure. Scientific studies exploring genotoxicity and other endpoints provide context for regulatory decisions. Research reports have examined the compound’s structural properties and behavior in biological test systems, contributing data relevant to hazard characterization. These evaluations inform regulatory panels and flavor industry experts who determine allowable use conditions. It is important to distinguish between controlled safety evaluations at exposure levels relevant to food and scientific studies that explore biological effects at higher concentrations or in non-food contexts. Regulatory acceptance is based on established exposure scenarios in food use.

Regulatory Status Worldwide

In regulatory contexts, BETA-CARYOPHYLLENE OXIDE is referenced in the U.S. FDA flavoring regulations under 21 CFR 172.515, which covers certain natural and synthetic flavoring substances permitted for use in food, indicating it has been evaluated for its intended purpose as a flavoring agent. The FDA listing acknowledges its status as an allowable food substance under specified conditions referenced by the regulation code. Internationally, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluated this compound and determined that there is "no safety concern at current levels of intake when used as a flavouring agent," reflecting an assessment of its safety within expected use levels. This evaluation is part of JECFA’s broader review of flavoring agents, supporting its inclusion in global flavor ingredient inventories. In flavor industry practice, organizations such as FEMA assign a specific FEMA GRAS reference number to this compound, indicating it has undergone deliberation within expert panels assessing its use in foods. Regulatory positions are specific to defined usages and do not imply unrestricted use; adherence to formulation and labeling requirements remains essential.

Taste And Functional Properties

In sensory evaluations, BETA-CARYOPHYLLENE OXIDE is noted for imparting woody, herbaceous, dry, and slightly spicy aromatic tones. These sensory attributes arise from its bicyclic sesquiterpene structure and epoxide functional group, which influence how the compound interacts with olfactory receptors. In flavor systems, it acts as a middle or base note, adding depth and complexity rather than strong top notes. Functionally, the compound displays moderate volatility, making it suitable for beverages, dry goods, and formulated seasonings where gradual aroma release enhances the consumer experience. Its solubility properties favor incorporation into lipid-containing systems and emulsions, though like many terpenic compounds it has limited water solubility, and formulation strategies account for this. The stability of BETA-CARYOPHYLLENE OXIDE under typical food processing conditions reflects its chemical resilience, although like many flavoring agents, it may degrade at extreme heat or prolonged processing. This means formulators consider its placement in ingredient sequences and processing steps to preserve desirable sensory attributes.

Acceptable Daily Intake Explained

The concept of acceptable daily intake (ADI) describes the amount of a substance that can be ingested daily over a lifetime without appreciable risk, based on toxicological data and safety factors. For BETA-CARYOPHYLLENE OXIDE, definitive numeric ADI values are not explicitly published in available regulatory evaluations, but global expert reviews have stated there is no safety concern at current intake levels when used as a flavoring agent. Hence, there is no numeric ADI established in the evaluations accessed. ADI reflects the assurance of safety within defined use conditions and is not a recommendation for consumption. Instead, it guides regulators, manufacturers, and safety professionals in setting limits and evaluating product formulations. Where a numeric ADI is not assigned, the narrative safety assessment still informs permissible use within the context of established regulatory frameworks.

Comparison With Similar Additives

BETA-CARYOPHYLLENE OXIDE shares functional similarities with other terpene-derived flavoring agents such as beta-caryophyllene and humulene epoxide. Like beta-caryophyllene, it contributes woody and spicy aromatic characteristics, yet its epoxide group alters sensory nuances and functional stability. In comparison to compounds such as linalool or limonene, which provide floral or citrus notes respectively, BETA-CARYOPHYLLENE OXIDE’s profile is more anchored in dry, woody spice. When formulating flavor systems, chemists may blend it with complementary agents such as eugenol or cinnamaldehyde to enrich complexity while balancing sensory impact, similar to how other sesquiterpenes are used to round out broader flavor palettes. The selection of specific terpenic additives depends on desired aromatic outcomes and processing considerations, with each contributing unique sensory attributes within permissible use levels.

Common Food Applications Narrative

BETA-CARYOPHYLLENE OXIDE finds application across a range of broad food categories where nuanced flavor enhancement is valued. In savory seasonings and spice blends, it can contribute to the overall aroma profile that supports herbs and spices without masking them. In beverages such as teas and craft-flavored drinks, its woody and spicy notes provide complexity that complements botanical infusions. Snack foods and crackers sometimes benefit from the addition of this compound in seasoning systems that aim for a balanced sensory experience with hints of dry spice and woodiness. In sauces and dressings, a carefully measured inclusion can round off flavor profiles and enhance perceived richness. Confectionery products with herbal or warm spice themes may incorporate it to deepen aromatic characteristics and support other flavor components. In specialty products such as artisanal food items and gourmet blends, this flavoring agent aids in creating distinctive profiles that align with consumer expectations for layered sensory experiences. Its use in culinary applications is typically at low concentrations, harmonizing with other ingredients to achieve a cohesive product identity without dominating the flavor landscape.

Safety & Regulations

FDA

  • Notes: Listed under FDA flavoring regulations referenced but formal approval status not explicitly verified from deep link.
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: No explicit numeric ADI from EFSA sources was verified.

JECFA

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

Sources

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