FlavScents AInsights Entry: Origanum Oil

1. Identity & Chemical Information

• Common Name(s): Origanum Oil, Oregano Oil
• CAS Number: 11/2/07
• FEMA Number: Not available
• Other Identifiers: Not available
• Material Type: Natural complex material (essential oil)
• Source: Derived from the leaves and flowers of the Origanum vulgare plant
• Key Constituents: Carvacrol, thymol, p-cymene, γ-terpinene

Origanum oil is a complex natural material primarily composed of phenolic compounds such as carvacrol and thymol, which contribute to its characteristic aroma and potential antimicrobial properties. The composition of origanum oil can vary significantly depending on the geographical origin, harvest time, and processing methods.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Origanum oil is known for its strong, spicy, and herbaceous aroma with a warm, pungent character. The oil's sensory profile is dominated by the presence of carvacrol and thymol, which impart a sharp, medicinal scent. The intensity of the aroma is high, and it has a significant diffusion, making it a potent impact note in formulations. The taste is similarly intense, with a warm, spicy flavor that can be overpowering if not used judiciously.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Origanum oil is naturally sourced from the Origanum vulgare plant, commonly known as oregano, which is native to the Mediterranean region. The oil is typically extracted through steam distillation of the plant's leaves and flowers. The formation of its key constituents, such as carvacrol and thymol, occurs naturally within the plant as part of its secondary metabolism. Origanum oil is often used in products labeled as "natural flavor" or "natural fragrance" due to its plant-based origin.

Citation hooks: FlavScents; food chemistry literature; EFSA/JECFA monographs

4. Use in Flavors

Origanum oil is widely used in savory flavor applications, particularly in Mediterranean and Mexican cuisines. It serves as a functional impact note in flavor systems, providing a warm, spicy, and herbaceous character. Typical use levels in finished food products range from 5 to 50 ppm, with higher concentrations potentially leading to overpowering flavors. The oil is relatively stable under heat but can be susceptible to oxidation, which may alter its sensory profile.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In the fragrance industry, origanum oil is used in various fragrance families, including herbal, spicy, and oriental compositions. It acts as a modifier or impact note, providing warmth and depth to the fragrance. Typical concentration ranges in fragrance formulations are from 0.1% to 1%, depending on the desired intensity. The oil contributes primarily to the middle notes of a fragrance due to its moderate volatility.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

5a. Key Constituents (Typical)

• Carvacrol: 60-80%
• Thymol: 5-15%
• p-Cymene: 5-10%
• γ-Terpinene: 5-10%

The composition of origanum oil can vary based on factors such as geographical origin, harvest time, and processing methods. These constituents are responsible for the oil's characteristic aroma and potential antimicrobial properties.

Citation hooks: FlavScents; peer-reviewed literature; authoritative industry references

6. Regulatory Status (Regional Overview)

• United States: Origanum oil is generally recognized as safe (GRAS) for flavor use by FEMA. Specific regulatory approvals for fragrance use are not explicitly documented.
• European Union: Approved for use in food flavorings under Regulation (EC) No 1334/2008. No specific FL number assigned.
• United Kingdom: Follows EU regulations post-Brexit with no significant divergence reported.
• Asia: Regulatory status varies; generally accepted in Japan and China for flavor use, but specific fragrance regulations may differ.
• Latin America: Accepted in Brazil and MERCOSUR countries for flavor use, with fragrance regulations less clearly defined.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

Origanum oil's safety profile varies based on exposure routes. For oral exposure, the oil is considered safe at typical flavor use levels, with no specific ADI or MSDI established. Dermal exposure in fragrance applications may pose a risk of irritation or sensitization, particularly due to the presence of phenolic compounds like carvacrol and thymol. Inhalation exposure is generally considered low risk, but occupational exposure should be managed to prevent respiratory irritation.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Origanum oil is valued for its potent aroma and flavor, making it a powerful tool in both flavor and fragrance formulations. It synergizes well with other herbal and spicy notes but can easily dominate a blend if not balanced properly. Formulators should be cautious of its potential to cause irritation in topical applications and consider antioxidant measures to prevent oxidation.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on origanum oil is well-established, particularly regarding its sensory profile and key constituents. However, industry practices regarding use levels and regulatory nuances may not always be fully documented. Known data gaps include specific toxicological thresholds and regional regulatory variations for fragrance use.

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 2026-09-10 19:33:45 GMT (p2)