CASCARILLA BARK, EXTRACT (CROTON SPP.)

CAS: 977083-53-6 FLAVORING AGENT OR ADJUVANT

Cascarilla Bark Extract (Croton spp.) is a plant-derived flavoring agent listed in the FDA Substances Added to Food inventory with a reference to 21 CFR 182.20 and evaluated in flavor safety programs.

What It Is

Cascarilla Bark Extract (Croton spp.) is a botanical derivative obtained from the outer bark of Croton species, traditionally Croton cascarilla or Croton eluteria. It is recognized in food ingredient inventories as a flavoring agent or adjuvant, meaning it is added to foods to impart characteristic aroma and taste properties. This ingredient appears in the United States FDA Substances Added to Food inventory under the general reference 182.20, indicating a category of substances historically used as flavorings or components of flavoring preparations rather than being individually listed as food additives with specific regulatory limits. The extract has a long history of use in flavor applications and is associated with sensory descriptors typical of woody, spicy, or bittersweet notes that contribute to complex flavor profiles in food and beverage products. As with many botanically derived flavorings, the composition is a complex mixture of volatile and semi-volatile compounds rather than a single defined molecule, encompassing natural components typical of Croton bark. Its identification by CAS registry number 977083-53-6 provides a unique identifier for regulatory and inventory purposes, linking it to specifications in national food regulatory lists. The use of Cascarilla Bark Extract in foods is driven by its capacity to provide distinct flavor characteristics that are difficult to replicate with single, simple synthetic compounds.

How It Is Made

Cascarilla Bark Extract is produced from the dried outer bark of specified Croton species, most notably Croton cascarilla and Croton eluteria, small trees or shrubs native to regions such as the Caribbean. In industrial and artisan contexts, the bark is typically collected and subjected to extraction processes designed to concentrate the aromatic and flavorful constituents while leaving behind bulk plant solids. Traditional methods include solvent extraction or steam distillation to isolate the essential oils and resinoid fractions that carry the characteristic flavor compounds. The extract may be further processed, filtered, or concentrated to achieve desired organoleptic qualities and consistency appropriate for food formulation. Manufacturing practices generally aim to preserve the natural profile of volatile terpenes, aromatic esters, and other flavor-active substances while controlling impurities and adhering to hygienic food-grade processing standards. Specifications for such botanical extracts emphasize identity, purity, and the absence of contaminants that could compromise safety or quality. Because botanical extracts like Cascarilla Bark Extract are complex mixtures rather than single chemicals, production and quality control focus on consistent sensory attributes and compliance with recognized definitions for flavoring preparations. Industry references to FEMA (Flavor and Extract Manufacturers Association) catalog entries provide identifiers that link production to safety evaluation programs overseen by expert panels concerned with flavor ingredient use, although specific proprietary production techniques may vary among suppliers.

Why It Is Used In Food

Cascarilla Bark Extract is used in food primarily for its flavoring properties. It contributes a distinctive aromatic profile that can enhance the sensory experience of beverages, confectionery, and other flavored products. Flavorings such as Cascarilla Bark Extract are selected for their ability to provide nuanced notes that blend with sweet, bitter, or botanical components, offering complexity that complements other ingredient profiles. Manufacturers may incorporate this extract to achieve specific traditional or regional flavor profiles, especially in products where a warm, spicy, or slightly bitter aroma is desirable. Examples include certain bitters, cocktails, flavored syrups, and specialty confectionery where subtle botanical nuances elevate the overall taste. The extract functions as an adjuvant by supporting and harmonizing multiple flavor notes, not only providing its own sensory contributions but also enhancing or rounding out other ingredients. In addition, because botanical flavor extracts often contain multiple volatile compounds, they may interact with food matrices to deliver layered sensory impressions that single-component artificial flavors cannot replicate. The use of Cascarilla Bark Extract aligns with trends toward utilizing natural flavor sources in food formulations, especially in premium or craft product categories where ingredient origin and complexity of flavor are marketing and quality differentiators. Its inclusion in regulatory flavor inventories underscores a long history of such uses, indicating that its sensory contributions are well understood within the flavor industry.

Adi Example Calculation

Because Cascarilla Bark Extract does not have a published numeric ADI in major regulatory safety databases, a hypothetical illustration can explain how ADI calculations generally work. For an additive with a numeric ADI established by a regulatory body, risk assessors would identify a no-observed-adverse-effect level (NOAEL) from animal studies, apply uncertainty factors to account for differences between animals and humans and human variability, and express the result as milligrams per kilogram body weight per day. For example, if a NOAEL were identified in an animal study at a certain dose and an uncertainty factor of 100 applied, the ADI would be the NOAEL divided by 100, expressed per kilogram of body weight. Because Cascarilla Bark Extract does not have such a published NOAEL and numeric ADI in authoritative regulatory sources, this example remains conceptual and does not reflect specific data for this ingredient. The purpose of illustrating ADI calculation is to help readers understand the principles used by risk assessors when numeric values are available for other additives.

Safety And Health Research

Safety assessment for Cascarilla Bark Extract, like many botanical flavorings, is grounded in a combination of historical use data and expert panel evaluation rather than extensive targeted toxicological studies for the extract as a single chemical entity. In the United States, inclusion in the flavor ingredient inventory and association with FEMA GRAS evaluations reflects that expert toxicologists have reviewed available information on the source material, compositional profiles, and historical consumption exposure under typical flavoring use conditions. Such evaluations consider the nature of constituent compounds, their metabolic fate, and levels of exposure expected in food applications. Regulatory and industry-informed safety reviews generally examine categories of chemicals found in botanicals, focusing on potential genotoxicity, subchronic toxicity, and other relevant endpoints, and compare exposure estimates with data from structurally related substances. For botanical extracts with a long history of use in foods and beverages, the absence of safety signals in the context of intended use helps support conclusions about their suitability as flavoring agents. However, because botanical extracts can contain many individual chemical constituents, safety assessments often consider the extract as a composite and rely on weight of evidence from historical use, structure-activity relationships of major components, and expert judgment rather than extensive clinical data. The safety narrative for Cascarilla Bark Extract therefore emphasizes its evaluation through recognized flavor safety programs and inventories, indicating that its use as a flavoring agent has been considered in professional scientific contexts without deterministic adverse health findings when used at appropriate levels in food products.

Regulatory Status Worldwide

In the United States, Cascarilla Bark Extract appears in the FDA Substances Added to Food inventory with a reference to 21 CFR 182.20, a general regulatory category encompassing substances historically used as flavors and listed in food ingredient inventories rather than being individually codified with specific use limitations. This listing indicates that Cascarilla Bark Extract is recognized in the context of flavoring uses under existing regulatory frameworks, but it does not equate to a formal FDA food additive approval with defined use levels. The inventory entry also references industry safety evaluations such as those conducted by the Flavor and Extract Manufacturers Association (FEMA), where the ingredient is identified with a FEMA GRAS number, reflecting expert panel assessment of safety for use as a flavoring under intended conditions of use. Specific official use levels published by FEMA may be available from the association as part of flavor ingredient use-level tables, but these are independent industry assessments that inform manufacturers and regulators about typical practices rather than prescriptive regulatory limits. Internationally, botanical flavor extracts similar to Cascarilla Bark Extract may be permitted under national food standards as natural flavoring preparations, with approvals or listings reflecting each jurisdiction’s approach to flavor ingredients. For example, some countries classify flavor extracts under general flavoring regulations within their food additive frameworks, while others may reference national standards for natural aromatic compounds. The presence of Cascarilla Bark Extract in inventories such as China’s GB2760 standard for permitted food ingredients suggests acceptance of this botanical extract as a natural flavoring material in certain global markets. Meanwhile, searches in European Union flavoring databases may not yield a specific listing for this ingredient, reflecting differences in how complex botanical extracts are cataloged or authorized in that regulatory context.

Taste And Functional Properties

Cascarilla Bark Extract is characterized by a complex sensory profile that typically includes woody, spicy, and slightly bitter aromatic notes. The extract’s functional properties are tied to the mixture of volatile and semi-volatile constituents derived from the bark of Croton species, which create multi-dimensional flavor impressions when incorporated into food or beverage systems. These sensory attributes can contribute depth and character, particularly in products where balance between sweet and bitter or botanical and aromatic elements is desired. Because the extract is a complex natural product, its solubility and stability can vary depending on the medium; generally, botanical extracts are more compatible with alcoholic or lipid-containing systems and may be less soluble in aqueous-only environments without solubilizing agents. The extract’s components can be sensitive to heat and pH changes, potentially shifting the flavor profile during processing or storage, so formulators often consider these factors when selecting it for use in heat-processed or low-pH products. Its contribution to overall flavor is not merely a single top note but rather a layered set of aromatic cues that can unfold over time on the palate. This makes Cascarilla Bark Extract appealing in applications that benefit from aromatic complexity, such as bitters, flavored spirits, and artisanal beverages. However, because of its complexity, the functional behavior of the extract in different food matrices requires careful formulation to maintain the desired flavor outcome throughout shelf life.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a safety metric used by food safety authorities to indicate the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on toxicological data and uncertainty factors. For many botanical flavor extracts such as Cascarilla Bark Extract, regulatory frameworks and expert panels rely on historical use and compositional analyses rather than setting a numeric ADI, because these extracts are used at low levels as flavoring agents and are composed of constituents that individually have established safety profiles or are present in small amounts. In such cases, authorities may not assign a specific numeric ADI but instead rely on the principle of safe use under intended conditions, supported by expert evaluation of available data. The absence of a defined numeric ADI in regulatory databases for Cascarilla Bark Extract reflects the nature of botanical flavorings, where extensive toxicological studies required for numeric ADI derivation may not be available, and risk assessment is based on compositional considerations and typical consumption patterns rather than high-dose experimental data.

Comparison With Similar Additives

Cascarilla Bark Extract can be compared with other natural botanical flavor extracts that serve similar functions in food and beverage formulations. For example, Orange Oil (a citrus peel extract) and Vanilla Extract (derived from vanilla bean) are both botanical flavorings that provide complex sensory profiles due to a mixture of volatile compounds. Like Cascarilla Bark Extract, these natural extracts are listed in flavor ingredient inventories and are used at low levels to impart characteristic aroma and taste notes. Orange Oil contributes bright, citrusy top notes that complement sweet and fruity applications, while Vanilla Extract brings warm, creamy, and sweet-spicy notes that are common in bakery and confectionery products. Cascarilla Bark Extract’s profile tends toward woody and spicy aromatic notes that can add depth to beverages or bittersweet confections. Another similar class is Herbal Extracts such as rosemary or thyme extract, which contribute herbaceous and savory aromatic qualities. All these botanical extracts function by adding layered sensory cues rather than single defined tastes, and formulators select among them based on desired flavor direction. While the specific chemical compositions and sensory outcomes differ, the underlying functional role—enhancing and modulating flavor through natural complex mixtures—is shared. Regulatory considerations for these extracts are also analogous in many regions, where inclusion in flavoring inventories and expert panel evaluations guide their safe use under typical conditions.

Common Food Applications Narrative

Cascarilla Bark Extract is found in a variety of flavored food and beverage products where natural botanical complexity is desired. In beverage formulations such as artisanal or craft spirits, flavored liqueurs, and certain cocktails, it adds nuanced aromatic notes that complement other botanicals and create distinctive flavor signatures that consumers associate with premium products. The extract’s woody and spicy notes can harmonize with citrus, herbal, or bitter orange elements in complex beverage recipes. In confectionery, specialty sweets, and bitter candy categories, Cascarilla Bark Extract may be used to introduce depth that balances sweetness, providing a rich sensory experience beyond simple sugar or vanilla notes. Within flavored syrups and mixers, the extract contributes layers of aroma that can enhance the overall profile when combined with fruits or spices. Similarly, in culinary applications like sauces, glazes, and marinades, a small amount of botanical extract can elevate the aromatic complexity of the finished dish without overpowering other ingredients. Across these applications, the ingredient serves to create signature flavor profiles sought after in craft and gourmet markets, where authenticity of botanical sources and richness of sensory character are valued. Because it is recognized within food additive inventories as a flavoring agent, its use in these contexts aligns with industry practices for incorporating natural extracts into consumer products, supporting diverse culinary and beverage innovation.

Safety & Regulations

FDA

  • Notes: Listed in FDA Substances Added to Food inventory with reference to 21 CFR 182.20; specific FDA additive approval and use levels are not individually codified.

EFSA

  • Notes: No specific EFSA listing found in EU flavoring databases for this ingredient.

JECFA

  • Notes: JECFA flavorings database exists but a specific entry and numerical evaluations for this extract were not identified.

Sources

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