1,4-CINEOLE

CAS: 470-67-7 FLAVORING AGENT OR ADJUVANT

1,4-Cineole is a flavoring agent and adjuvant used in food flavorings. It has been evaluated by international expert bodies such as JECFA with no safety concern at typical use levels.

What It Is

1,4-CINEOLE is a chemical compound classified as a flavoring agent or adjuvant that is used in food products for its aromatic and taste contributions. It is a monoterpene ether naturally found in the essential oils of many plants, including eucalyptus, and is characterized by its cool, minty, and herbal scent and flavor. The chemical is identified by the CAS number 470-67-7 and appears in flavor libraries and food additive inventories maintained by regulatory bodies, indicating its recognized role as a food flavoring substance. Beyond the technical identifiers, 1,4-CINEOLE’s classification reflects an ingredient that contributes sensory effects to food rather than nutritional value or preservative function. Its inclusion in regulatory listings for flavoring agents underscores its specific functional category within the broader spectrum of food additives. The structure of 1,4-CINEOLE consists of a bicyclic ring system that delivers its characteristic aromatic properties. Although it is a naturally occurring compound in many plant sources, commercial preparations may be derived through extraction and purification or synthetic processes to achieve food-grade quality and consistency. This compound does not act as a primary food nutrient, preservative, or colorant; instead, it enhances or modifies aroma and taste profiles in formulation. Given its long-standing use in the food and flavor industry, 1,4-CINEOLE has been discussed and reviewed by groups such as the Flavor and Extract Manufacturers Association (FEMA) and the Joint FAO/WHO Expert Committee on Food Additives (JECFA) in the context of flavoring agents and their safety. These evaluations support understanding its technical role while informing risk assessment and regulatory status in various jurisdictions.

How It Is Made

1,4-CINEOLE used in food applications is typically obtained either through extraction from natural botanical sources or via synthetic organic processes. In nature, it is a constituent of essential oils from eucalyptus and a variety of other aromatic plants. Traditional extraction methodologies involve steam distillation of plant material to concentrate essential oils, followed by fractional distillation and refinement to isolate 1,4-CINEOLE at the required purity for flavor use. In industrial settings, control of purity and consistency is critical for meeting food-grade additive specifications. As such, synthetic processes or controlled purification of natural extracts are often applied to deliver batches of 1,4-CINEOLE that meet documented analytical criteria. Regulatory agencies and industry users expect that flavoring agents are produced under recognized good manufacturing practice (GMP) conditions, and that specifications ensure the absence of harmful contaminants or impurities. The refinement process also supports compliance with international food additive specifications, which often include identity testing and limits on certain impurities. Manufacturers will generally provide certificates of analysis and documentation of production methods for use in regulatory submissions and quality assurance processes. While the basic chemistry is well understood, exact proprietary methods vary between producers and are typically subject to commercial confidentiality. Regardless of the source, 1,4-CINEOLE intended for food use must meet appropriate safety and purity standards as outlined by regulatory entities. These production considerations help ensure that the final ingredient performs its intended sensory function without introducing unwanted contaminants to the food supply.

Why It Is Used In Food

1,4-CINEOLE is used in food primarily for its sensory contributions, especially aroma and flavor enhancement. Flavoring agents like 1,4-CINEOLE are key components in creating appealing taste profiles in a variety of food and beverage products. They are added in quantities sufficient to achieve the desired sensory impact while complying with regulatory and safety standards. From a formulation perspective, 1,4-CINEOLE’s cool, minty, and herbal notes make it useful in products where these characteristics complement other flavor components. It can enhance complexity or round out flavor profiles in finished goods, particularly where a fresh or herbal note is desirable. Its function is not to provide nutrition or preservation but to contribute to the overall organoleptic quality of the product. In many flavored formulations, the technical objective is to achieve consistency in taste and scent across production batches. 1,4-CINEOLE’s well-characterized sensory profile and its acceptance in regulatory flavoring inventories make it a practical choice for formulators. The compound also integrates with a range of other flavoring substances to achieve balanced sensory outcomes without overpowering other ingredients. Because 1,4-CINEOLE does not act as a preservative or nutritional enhancer, its use is guided by flavor design principles and regulatory guidance. Flavor industry panels and food safety authorities typically evaluate its use in the context of overall intake levels, sensory effects, and consumer expectations for quality and safety.

Adi Example Calculation

Because 1,4-CINEOLE’s safety evaluation by expert bodies indicates no safety concern at typical levels of intake from its use as a flavoring agent, a numerical acceptable daily intake (ADI) value has not been established. Therefore, an illustrative calculation using a numeric ADI is not provided here. In general, when an ADI is assigned for an additive, the calculation for a hypothetical individual would involve multiplying the ADI (in mg per kilogram of body weight) by the body weight of that individual. That product represents the quantity that could be consumed daily over a lifetime without appreciable health risk according to risk assessment principles. For ingredients without a numeric ADI but deemed of no safety concern at typical exposure levels, producers rely on documented use levels consistent with good manufacturing practice and regulatory listings.

Safety And Health Research

Safety evaluations of 1,4-CINEOLE focus on its potential for adverse effects at typical levels of dietary exposure through flavored foods. International bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have reviewed available toxicological data and concluded that, at the levels associated with flavoring use, there is no safety concern for consumers. This conclusion reflects a comprehensive assessment that considers the compound’s chemical structure, metabolism, and patterns of exposure. Regulatory organizations review toxicology studies to determine whether a substance may pose any risk of toxicity, mutagenicity, or other hazards under normal conditions of use. For 1,4-CINEOLE, JECFA’s evaluation indicates that typical intake from food flavoring applications is not expected to result in harmful effects. Such assessments are based on available evidence and take into account conservative assumptions to protect public health. While sensory or research literature may describe biological activities of 1,4-CINEOLE in experimental systems, these findings are not directly related to approved food uses unless specifically considered by regulatory risk assessors. Current evaluations focus on ensuring that food use levels remain within ranges that do not raise safety concerns according to established risk assessment methodologies. Continued monitoring and scientific updates may influence future regulatory considerations as new data emerge.

Regulatory Status Worldwide

In the United States, 1,4-CINEOLE appears in the FDA’s Substances Added to Food inventory (formerly EAFUS) with an associated reference to 21 CFR 172.515 for flavoring agents and related substances, indicating that it is recognized for use as a flavoring agent or adjuvant under those regulations. This listing signifies that regulators have documented its use and function in food applications without prescribing explicit numerical limits in the Code of Federal Regulations. Such inventories inform industry users about substances that have been reviewed within the regulatory framework for intended uses in foods. On the international stage, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has also evaluated 1,4-CINEOLE as a flavoring agent. According to JECFA’s database entry, evaluations show "no safety concern at current levels of intake when used as a flavouring agent," reflecting a risk assessment outcome rather than an established numerical acceptable daily intake. This conclusion is based on reviews of available toxicological data and typical exposure levels associated with use in food products. The additive has an assigned JECFA number that connects it to these expert assessments. Other regional regulators and industry panels may also reference 1,4-CINEOLE in flavoring inventories or safety evaluations, supporting its inclusion in food formulations under conditions of good manufacturing practice. However, specific national regulations vary, and food producers must ensure compliance with local requirements where products are marketed.

Taste And Functional Properties

1,4-CINEOLE contributes distinct sensory qualities to food formulations due to its characteristic aromatic profile. Its taste and odor profile is generally described as cool, minty, coniferous, and herbaceous, adding a fresh sensory dimension where such notes are desired. These sensory properties can enhance the perception of complexity in a wide array of flavored foods, particularly confections, beverages, and oral hygiene products where cooling or herbal nuances are desirable. From a functional standpoint, 1,4-CINEOLE integrates into flavor systems rather than serving a technological role such as emulsification, preservation, or texture modification. Its volatility and solubility characteristics influence how it behaves in different food matrices. For example, its slight solubility in water and higher solubility in ethanol or oils means that formulation strategies must account for how it partitions in aqueous versus lipid phases. The presence of this compound can influence the overall aroma release and flavor perception once a product is consumed. In sensory evaluation, 1,4-CINEOLE often complements other terpenoid or herbal components, aiding in achieving balanced flavor interplay. It does not mask other flavors as aggressively as some synthetic agents, making it a valued ingredient when a natural or integrated aromatic profile is sought. While specific functional outcomes depend on product formulation, its sensory impacts are well understood within the flavor industry and documented in flavor reference libraries.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a scientific estimate of the amount of a substance that can be consumed every day over a lifetime without appreciable health risk. For many food additives, regulatory bodies express this value in milligrams per kilogram of body weight per day, based on toxicological studies and safety factors. However, in the case of 1,4-CINEOLE, authoritative evaluations by expert committees such as JECFA have concluded that typical exposures from food flavoring use do not raise a safety concern, and therefore a specific numeric ADI has not been established. This type of outcome often arises for flavoring agents where exposure levels are low and data indicate minimal risk at those levels. The determination that there is no safety concern reflects an overall assessment of available toxicology and expected consumption patterns rather than a fixed numeric threshold. It is important to understand that the absence of a numeric ADI does not imply unrestricted use; food producers must still adhere to good manufacturing practice and relevant regulatory provisions. In practice, good manufacturing practice means using only the amount of 1,4-CINEOLE necessary to achieve the desired flavor effect and avoiding excessive quantities. Regulatory bodies and expert committees may revisit evaluations if new scientific evidence becomes available, but current assessments support the safety of this compound at typical flavor use levels.

Comparison With Similar Additives

1,4-CINEOLE can be compared with other flavoring agents that have cooling or minty sensory profiles, such as menthol, eucalyptol, and methyl salicylate. Menthol also imparts a cooling sensation and is widely used in confectionery, oral care products, and beverages, similar to 1,4-CINEOLE’s applications in products where freshness is desired. Eucalyptol (which often includes 1,4-CINEOLE itself in natural extracts) delivers herbal and camphoraceous notes that contribute complexity to flavor blends. Methyl salicylate provides a wintergreen note often used in mint-flavored confections and oral care products. These compounds differ in their sensory intensity, solubility, and regulatory evaluations, but each serves a role in delivering particular aromatic and taste characteristics. Like 1,4-CINEOLE, these flavoring agents must be used according to regulatory provisions and good manufacturing practice. Their inclusion in food products reflects careful formulation to achieve targeted sensory outcomes while meeting safety and regulatory requirements. Comparing them illustrates how food technologists select flavoring agents with complementary sensory properties to achieve balanced and appealing flavor profiles.

Common Food Applications Narrative

In food product development, 1,4-CINEOLE is most often encountered as a component in flavored products where a fresh, herbal, or cooling character enhances the overall sensory appeal. It may be incorporated into confections, soft drinks, chewing gums, and similar products to deliver subtle aromatic complexity and to complement other botanical or mint-type flavor notes. In beverage formulations, particularly those with herbal or natural themes, this compound can contribute to freshness and perceived quality without dominating the flavor profile. In confections such as candies and chewing gum, 1,4-CINEOLE may work alongside sweet and cooling agents to create multi-dimensional taste experiences. Its integration into flavor systems is guided by sensory analysis and blending expertise, ensuring that it aligns with consumer expectations for taste and aroma. Formulators also use 1,4-CINEOLE in more niche food categories where a botanical impression or distinct aromatic profile is desired. While it is not a primary ingredient, its use as a flavor component helps fine-tune the final taste experience. In applications with complex flavor demands, such as certain ready-to-drink beverages or syrup-based products, 1,4-CINEOLE’s herbal elements provide nuance that might not be achieved with single-note flavoring agents alone. Across these product types, manufacturers must balance the use of 1,4-CINEOLE with regulatory guidance and good manufacturing practice, applying it at levels that achieve the desired sensory effect without exceeding any established intake considerations.

Safety & Regulations

FDA

  • Notes: Listed as a substance added to food with a reference to flavoring agents and related substances but not explicitly affirmed as GRAS with numeric limits.
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: EFSA evaluation specific numeric ADI not identified.

JECFA

  • Notes: JECFA concluded no safety concern at expected intake levels without a numeric ADI.

Sources

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