BETA-CARYOPHYLLENE ALCOHOL

CAS: 472-97-9 FLAVORING AGENT OR ADJUVANT

Beta-caryophyllene alcohol is a naturally occurring terpene-derived secondary alcohol used primarily as a flavoring agent with a warm, woody, spicy odor profile and is evaluated by international food additive authorities.

What It Is

Beta-caryophyllene alcohol is a defined organic compound belonging to the class of tricyclic sesquiterpene alcohols used in food and beverage applications to impart specific flavor nuances. It is identified by the Chemical Abstracts Service registry number 472-97-9, and it is recognized under international flavoring inventories as a flavoring agent or adjuvant. Other chemical identifiers include caryolan-1-ol and multiple tricyclic structural descriptors that reflect its molecular architecture. This substance occurs as a solid crystalline material with sensory properties often described as warm, woody, earthy, and spicy, making it useful in formulating nuanced flavor profiles in culinary applications. At the molecular level, beta-caryophyllene alcohol represents a secondary alcohol derivative of the hydrocarbon beta-caryophyllene, featuring a tricyclic core and methyl substitutions that contribute to its physicochemical characteristics. Its presence in this structural class aligns it with a group of natural flavoring substances found in essential oils and botanical extracts. The sensory characteristics of the compound derive from its molecular shape and functional alcohol group, which influence volatility and receptor interactions in sensory perception. While not assigned an International Numbering System (INS) number as a separate additive in many jurisdictions, it is listed in flavor inventories and evaluated for safety by expert committees. In regulatory and safety science contexts, beta-caryophyllene alcohol is discussed within the realm of food flavoring agents and related adjuvants. It is evaluated by international expert bodies for safety at levels of intended use in foods and beverages. Due to its relatively low use levels and its natural occurrence in a variety of botanicals and essential oils, regulatory assessments often focus on intake estimates, structural analogies, and toxicological data. Its classification as a flavoring substance reflects both its sensory utility and the technical function it serves in food formulation, modifying or enhancing specific aromatic facets without contributing nutritive value.

How It Is Made

The production of beta-caryophyllene alcohol for food and flavor applications generally arises from chemical or biocatalytic transformations of its precursor terpene, beta-caryophyllene, which is abundant in a variety of essential oils. In commercial practice, beta-caryophyllene undergoes hydration or related catalytic processes that introduce a hydroxyl functional group to yield the alcohol. These transformations are carried out under controlled conditions to achieve high purity suitable for use in flavor formulations. In natural sources, beta-caryophyllene alcohol may be obtained through distillation or extraction of essential oils from plant materials such as clove, pepper, hop, or other botanicals where the precursor hydrocarbon and its oxidized derivatives coexist. The extraction and purification of naturally derived beta-caryophyllene alcohol involve conventional flavor and fragrance industry techniques, including steam distillation and chromatographic separation, to isolate the desired compound with sensory-active qualities. Synthetic methods, where employed, may use acid-catalyzed hydration or oxidation of the terpene skeleton, followed by purification steps to meet technical and safety specifications for food use. Manufacturers producing beta-caryophyllene alcohol for the flavor industry must adhere to strict quality standards, often documented in flavoring specifications that include identity, purity, and impurity profiles. These standards ensure that the material meets established criteria for sensory performance and safety. Because beta-caryophyllene alcohol is used at relatively low levels in flavor applications, batch-to-batch consistency and compliance with analytical specifications are key considerations in its production and commercial distribution.

Why It Is Used In Food

Beta-caryophyllene alcohol is used in food and beverage applications principally to impart or enhance specific flavor notes that are warm, woody, earthy, or spicy. Its unique odor profile complements other flavor components and can provide depth and complexity to savory and aromatic formulations. Flavor chemists may include this compound in blends to achieve targeted sensory outcomes without overpowering the overall flavor balance. In practice, beta-caryophyllene alcohol functions as a minor but impactful component in flavor formulations. Because of its distinct sensory attributes, it is particularly valuable in products where a subtle woody or spice-like character is desirable, such as in seasonings, sauces, beverages, and confectionery. The molecule’s volatility and interaction with other flavor compounds help modulate release patterns during consumption, which can shape the overall flavor perception experience. The use of beta-caryophyllene alcohol in food is also informed by regulatory evaluations that consider safety at the levels of intended use. Bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) assess flavoring agents for safety concerns and provide guidance on intake expectations. In many jurisdictions, inclusion of beta-caryophyllene alcohol in flavor applications must align with applicable food standards and labeling requirements to ensure transparency for manufacturers and consumers alike.

Adi Example Calculation

To illustrate how acceptable daily intake considerations are applied in regulatory science, consider a hypothetical adult weighing 70 kilograms. If a flavoring agent had a numeric ADI of X milligrams per kilogram body weight per day, the total allowable intake for that adult would be calculated as 70 kg times X mg/kg, resulting in 70X milligrams per day. Because beta-caryophyllene alcohol does not have a numeric ADI established due to the lack of safety concern at current use levels, this calculation serves purely as a conceptual example rather than a directive for intake. Such calculations help contextualize how regulatory bodies translate ADI values into real-world intake estimates for consumers. In practice, flavoring agents like beta-caryophyllene alcohol are used at levels orders of magnitude below thresholds of toxicological concern, and exposure estimates are informed by consumption patterns of foods and beverages containing these agents. By integrating exposure data with safety evaluations, regulators ensure that consumer intake remains within safe bounds. This example underscores the role of ADI concepts in regulatory assessments even when numeric values are not assigned, emphasizing that safety determinations account for body weight, exposure frequency, and comprehensive toxicological evidence.

Safety And Health Research

Safety assessments for beta-caryophyllene alcohol focus on its use as a flavoring agent at levels typical of flavor formulation and intake. International expert committees, such as the Joint FAO/WHO Expert Committee on Food Additives, evaluate available toxicological data, metabolism, and estimated intake to determine whether concerns exist for consumer health at current use levels. In the case of beta-caryophyllene alcohol, JECFA’s evaluation concluded that there is no safety concern at current intake levels, supporting its continued use in food flavor applications. Toxicological research relevant to beta-caryophyllene alcohol includes studies of its structural analogs as well as general assessments of terpenoid alcohols in food. These evaluations consider endpoints such as genotoxicity, subchronic toxicity, and metabolic pathways to ensure that flavoring agents do not pose risks at the exposure levels encountered in human diets. Because beta-caryophyllene alcohol is metabolized efficiently and used at low concentrations, expert committees often rely on established risk assessment paradigms such as the threshold of toxicological concern to inform their determinations. Ongoing research into food flavor compounds also examines sensory thresholds, potential for interaction with other dietary components, and consumer exposure patterns. While research continues to enrich understanding of individual flavoring substances, current evidence supports the safety of beta-caryophyllene alcohol in its role as a flavoring agent when used in accordance with good manufacturing practices.

Regulatory Status Worldwide

Beta-caryophyllene alcohol is recognized in international flavoring inventories and subject to evaluation by global expert bodies that assess food additive safety. In the United States, it is included in the Food and Drug Administration’s Substances Added to Food database (formerly EAFUS) as a flavoring agent or adjuvant, reflecting that it has been reviewed for its technical effect and recognized for use in food flavor formulations without specific regulatory limits on its use level. This listing aligns with its function as a sensory-impacting component in food applications rather than as a nutrient or preservative. Internationally, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated beta-caryophyllene alcohol as part of its assessment of flavoring agents and determined that there is no safety concern at current levels of intake when used as a flavoring agent. These evaluations support the compound’s continued use in food and beverage applications consistent with good manufacturing practice. Regulatory frameworks in many regions integrate such international evaluations into their own approval processes, emphasizing low intake and structural comparators rather than numerical allowable daily intake (ADI) values when no safety concern is identified. It is important to note that regulatory status may vary by jurisdiction and may require compliance with local food additive inventories or flavoring lists. Manufacturers intending to use beta-caryophyllene alcohol in foods should ensure that their formulations align with applicable food standards and labeling requirements in the markets where products are sold.

Taste And Functional Properties

Beta-caryophyllene alcohol exhibits a sensory profile marked by warm, woody, earthy, and mildly spicy notes that can enrich a wide range of flavor compositions. These sensory qualities make it particularly suited for complex flavor systems where nuanced aromatic interplay is desired. The presence of the alcohol functional group and the tricyclic terpene core contributes to its characteristic odor perception and influences how it interacts with olfactory receptors. In functional terms, beta-caryophyllene alcohol has limited solubility in water but dissolves readily in ethanol and other organic solvents commonly used in flavor extraction and formulation processes. Its volatility and stability can vary with temperature and pH, and it is typically incorporated into flavor blends at low concentrations that align with sensory thresholds. Flavorists often consider these physicochemical properties when designing applications that maintain desired sensory profiles over the shelf life of the product. From a formulation perspective, the compound’s compatibility with other flavor ingredients allows for diverse use across savory, sweet, and beverage categories. Its capacity to enhance or modify existing flavor notes without introducing off-notes at appropriate use levels makes it a valuable tool in the flavor chemist’s repertoire. These functional properties contribute to the technological rationale for including beta-caryophyllene alcohol in specific flavor systems.

Acceptable Daily Intake Explained

Acceptable daily intake (ADI) is a regulatory science concept developed to express the amount of a substance that can be ingested daily over a lifetime without appreciable health risk. For many flavoring agents, ADIs are not established numerically when expert committees determine that intake at intended use levels does not raise safety concerns. In the case of beta-caryophyllene alcohol, international evaluations have not specified a numeric ADI because safety assessments indicate no safety concern at current levels of intake. The absence of a numeric ADI does not imply that the compound is without any pharmacological effect; rather, it reflects that the estimated exposure from its intended use as a flavoring agent is far below levels of potential concern. This distinction is important for regulatory and industry stakeholders who must interpret regulatory evaluations in the context of practical use. When a numeric ADI is not established, manufacturers typically rely on expert evaluations indicating a lack of safety concern under conditions of intended use and adhere to good manufacturing practices to ensure consumer protection.

Comparison With Similar Additives

Beta-caryophyllene alcohol shares functional similarities with other terpene-derived flavoring agents that contribute woody, spicy, or herbal nuances to food formulations. Examples include linalool and geraniol, which are also terpene alcohols used for their aromatic contributions. While linalool tends to impart floral and citrus facets, beta-caryophyllene alcohol’s profile is distinctly warm and woody, illustrating how structural variations among terpene alcohols can yield unique sensory outcomes. Another related additive is alpha-terpineol, a monoterpene alcohol used for its pleasant floral and lilac-like aroma in flavor and fragrance applications. Compared to beta-caryophyllene alcohol, alpha-terpineol is more volatile and often used in products where a lighter top note is desired. In contrast, beta-caryophyllene alcohol’s heavier, more resinous character suits deeper, foundational aspects of flavor compositions. In formulating complex flavor systems, flavorists may combine these and other terpenoid compounds to achieve layered sensory effects. Each contributes specific volatility, odor character, and functional behavior that together define the sensory profile of a product. The comparison of beta-caryophyllene alcohol with structurally similar additives highlights the importance of nuanced selection based on desired flavor outcomes.

Common Food Applications Narrative

In practical food applications, beta-caryophyllene alcohol finds use where its distinctive sensory characteristics can complement or modulate targeted flavor profiles. Examples include savory sauces where a woody or spicy background note reinforces the intended taste, beverages that benefit from a warm aromatic complexity, and confectionery products where subtle herbal nuances enhance the overall flavor experience. Its inclusion in flavor blends often aims to achieve an integrated sensory effect rather than to serve as a dominant flavor note. Because beta-caryophyllene alcohol is used at low concentrations typical of many flavoring agents, its presence is generally imperceptible as a standalone component but contributes to the multi-dimensional sensory fabric of the final product. In beverages, wine and craft spirits formulations sometimes leverage terpene-derived alcohols to emulate botanical or oak-aged characteristics without reliance on actual aging processes. Similarly, ready-to-drink beverages with spice or herbal accents may incorporate such compounds to fine-tune the aromatic signature. In savory and snack categories, beta-caryophyllene alcohol can augment other flavor ingredients to evoke deeper earthy or spiced impressions. The strategic use of this compound in combination with other terpenes, aldehydes, and esters can help food technologists craft products that resonate with consumer expectations for complexity and balance. Across all applications, the overarching goal is to enhance sensory appeal while maintaining compliance with food safety and regulatory frameworks.

Safety & Regulations

FDA

  • Notes: FDA inclusion in Substances Added to Food database reflects listing as a flavoring agent; specific CFR approval section not confirmed from deep link.

EFSA

  • Notes: EFSA evaluations specific to this substance could not be located in authoritative sources.

JECFA

  • Year: 2010
  • Adi Display: No safety concern at current levels of intake when used as flavoring agent

Sources

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