FlavScents AInsights Entry: Sweet Fennel Seed Oil (CAS: 8006-84-6)
1. Identity & Chemical Information
Sweet fennel seed oil is a natural complex material derived from the seeds of the fennel plant (Foeniculum vulgare). It is commonly referred to as fennel oil or sweet fennel essential oil. The CAS number for sweet fennel seed oil is 8006-84-6. This essential oil does not have a single molecular structure as it is a mixture of various compounds. Key identifiers include its FEMA number, which is 2483, and its presence in various regulatory and industry databases. The oil is characterized by its rich composition of terpenes and phenylpropanoids, which contribute to its distinctive aroma and flavor profile.
Citation hooks: FlavScents; PubChem; FEMA
2. Sensory Profile
Sweet fennel seed oil is known for its sweet, anise-like aroma with a warm, spicy undertone. The primary odor descriptors include sweet, spicy, and licorice-like, with a moderate to high intensity and good diffusion. It is often used as an impact note in both flavor and fragrance formulations, providing a characteristic sweet and herbal note. The taste threshold for fennel oil is not well-documented, but its strong flavor suggests it is effective at low concentrations.
Citation hooks: FlavScents; peer-reviewed sensory literature
3. Natural Occurrence & Formation
Sweet fennel seed oil is naturally sourced from the seeds of the fennel plant, Foeniculum vulgare, which is native to the Mediterranean region but now cultivated worldwide. The oil is typically obtained through steam distillation of the dried seeds. The formation of its characteristic compounds occurs naturally in the plant, with biosynthetic pathways involving the conversion of primary metabolites into terpenes and phenylpropanoids. Its designation as a "natural flavor" or "natural fragrance" is supported by its direct extraction from plant material without synthetic modification.
Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs
4. Use in Flavors
Sweet fennel seed oil is widely used in flavor applications, particularly in confectionery, bakery, and beverage products. It serves as a functional flavoring agent, providing a sweet, anise-like note that enhances the overall flavor profile. Typical use levels in finished food products range from 1 to 20 ppm, with lower concentrations used in beverages and higher levels in baked goods. The oil is relatively stable under normal processing conditions but may degrade under prolonged exposure to heat and light.
Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature
5. Use in Fragrances
In the fragrance industry, sweet fennel seed oil is used in various fragrance families, including oriental and gourmand. It acts as a modifier and impact note, adding sweetness and complexity to the fragrance composition. Typical concentration ranges in perfumes and personal care products are from 0.1% to 1%, depending on the desired intensity. The oil contributes primarily to the top and middle notes due to its moderate volatility.
Citation hooks: FlavScents; IFRA; fragrance chemistry texts
5a. Key Constituents (Typical)
Sweet fennel seed oil is composed of several key constituents, including anethole, fenchone, and estragole. Anethole is the primary component, contributing to the oil's sweet, licorice-like aroma. Fenchone adds a camphoraceous note, while estragole provides a sweet, spicy character. The composition of the oil can vary significantly depending on the geographical origin, harvest time, and extraction method.
Citation hooks: FlavScents; peer-reviewed literature; authoritative industry references
6. Regulatory Status (Regional Overview)
In the United States, sweet fennel seed oil is generally recognized as safe (GRAS) for use in food by FEMA. In the European Union, it is regulated under Regulation (EC) No 1334/2008 and assigned an FL number. The United Kingdom follows similar regulations post-Brexit. In Asia, countries like Japan and China have specific guidelines for its use in food and cosmetics, while in Latin America, regulations may vary, with Brazil and MERCOSUR providing specific approvals for its use.
Citation hooks: FEMA; EFSA; national authority publications
7. Toxicology, Safety & Exposure Considerations
The safety of sweet fennel seed oil is evaluated based on its exposure routes. For oral exposure, the oil is considered safe at typical flavor use levels, with an acceptable daily intake (ADI) not clearly reported but generally low due to its potent flavor. Dermal exposure in fragrances is subject to IFRA guidelines, which limit concentrations to minimize irritation and sensitization risks. Inhalation exposure is generally low risk due to its moderate volatility, but occupational exposure should be managed with appropriate ventilation.
Citation hooks: EFSA; FEMA; PubChem; toxicology literature
8. Practical Insights for Formulators
Sweet fennel seed oil is valued for its unique sweet and spicy profile, making it a versatile ingredient in both flavors and fragrances. It synergizes well with other sweet and herbal notes, such as vanilla and mint. Formulators should be cautious of its strong impact, which can easily overpower other components if used excessively. It is often under-utilized in savory applications, where it can add depth and complexity.
Citation hooks: FlavScents; industry practice
9. Confidence & Data Quality Notes
The data on sweet fennel seed oil is well-established, with comprehensive sensory and regulatory information available. However, industry practices regarding its use levels and safety assessments are often based on typical usage rather than documented studies. Known data gaps include precise ADI values and detailed compositional analysis across different sources.
Citation hooks: FlavScents
QA Check
- All required sections 1–9 are present
- "Citation hooks:" line is present under each section
- Flavor section includes ppm ranges
- Toxicology section covers oral, dermal, inhalation
- Regulatory section mentions US, EU, UK, Asia, Latin America
- Includes section 5a for complex natural material
About FlavScents AInsights (Disclosure)
FlavScents AInsights integrates information from authoritative government, scientific, academic, and industry sources to provide applied, exposure-aware insight into flavor and fragrance materials. Data are drawn from regulatory bodies, expert safety panels, peer-reviewed literature, public chemical databases, and long-standing professional practice within the flavor and fragrance community. Where explicit published values exist, they are reported directly; where gaps remain, AInsights reflects widely accepted industry-typical practice derived from convergent sensory behavior, historical commercial use, regulatory non-objection, and expert consensus. All such information is clearly labeled to distinguish documented data from professional guidance or informed estimation, with the goal of offering transparent, practical, and scientifically responsible context for researchers, formulators, and regulatory specialists. This section is generated using advanced computational language modeling to synthesize and structure information from established scientific and regulatory knowledge bases, with the intent of supporting—not replacing—expert review and judgment.
Generated 2026-10-22 13:44:45 GMT (p2)
