FlavScents AInsights Entry: Lemon Oil Terpeneless (CAS: 68648-39-5)

1. Identity & Chemical Information

Lemon Oil Terpeneless is a natural complex material derived from lemon oil by removing terpenes to enhance its stability and concentration of oxygenated compounds. It is commonly used in flavor and fragrance applications due to its potent lemon aroma. The CAS number for Lemon Oil Terpeneless is 68648-39-5. It does not have a specific IUPAC name as it is not a single compound but a mixture. Other identifiers include its FEMA number, which is typically used for flavor materials, though specific numbers may vary based on the exact composition and supplier.

Citation hooks: FlavScents; PubChem; FEMA

2. Sensory Profile

Lemon Oil Terpeneless is characterized by its intense, fresh, and zesty lemon aroma, which is more concentrated than regular lemon oil due to the removal of terpenes. This process enhances the oil's stability and longevity in formulations. The oil is often described as having a bright, citrusy top note with a slightly sweet undertone. It is primarily used as an impact note in both flavor and fragrance applications, providing a realistic lemon scent and taste. Specific odor and taste thresholds are not clearly reported, but its concentrated nature suggests it is used at lower levels compared to regular lemon oil.

Citation hooks: FlavScents; peer-reviewed sensory literature

3. Natural Occurrence & Formation

Lemon Oil Terpeneless is derived from the peel of Citrus limon (lemon) through a process that removes terpenes, which are less stable and can contribute to off-notes over time. This process results in a product that is richer in oxygenated compounds like citral, which are responsible for the characteristic lemon aroma. The oil is considered a natural flavor and fragrance material, aligning with industry standards for "natural" designation when derived from natural sources and processed without synthetic additives.

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

4. Use in Flavors

Lemon Oil Terpeneless is widely used in flavor formulations, particularly in beverages, confectionery, and baked goods, where a strong lemon flavor is desired. It serves as a primary flavoring agent, providing a clean and intense lemon note. Typical use levels in finished products range from 5 to 50 ppm, depending on the application and desired intensity. The oil is stable under various conditions, but care should be taken to avoid prolonged exposure to heat and light, which can degrade its quality.

Citation hooks: FlavScents; FEMA GRAS documentation; formulation literature

5. Use in Fragrances

In fragrance applications, Lemon Oil Terpeneless is used in a variety of product types, including perfumes, household cleaners, and personal care products. It is valued for its fresh, uplifting scent and is often used as a top note in citrus and fresh fragrance families. Typical concentration ranges in formulations are from 0.1% to 1%, depending on the product type and desired scent profile. Its volatility makes it an excellent choice for top note applications, providing an immediate burst of freshness.

Citation hooks: FlavScents; IFRA; fragrance chemistry texts

5a. Key Constituents (Typical)

Lemon Oil Terpeneless typically contains higher concentrations of citral, limonene, and other oxygenated compounds compared to regular lemon oil. The exact composition can vary based on the source of the lemons and the processing methods used. It is important to note that the composition may vary by origin, harvest, and processing.

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

6. Regulatory Status (Regional Overview)

In the United States, Lemon Oil Terpeneless 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 is permitted for use in food and fragrance applications. The United Kingdom follows similar regulations post-Brexit. In Asia, regulations vary, but it is generally accepted in countries like Japan and China for flavor and fragrance use. In Latin America, countries such as Brazil and those in MERCOSUR also permit its use, though specific regulations should be consulted for each country.

Citation hooks: FEMA; EFSA; national authority publications

7. Toxicology, Safety & Exposure Considerations

Lemon Oil Terpeneless is considered safe for use in food and fragrance applications when used within recommended levels. For oral exposure, it is important to adhere to GRAS guidelines and typical use levels to ensure safety. Dermal exposure in fragrance applications should consider potential irritation or sensitization, although it is generally regarded as safe when used appropriately. Inhalation exposure is typically not a concern at normal use levels, but occupational exposure should be managed to prevent overexposure.

Citation hooks: EFSA; FEMA; PubChem; toxicology literature

8. Practical Insights for Formulators

Lemon Oil Terpeneless is valued for its intense lemon aroma and stability, making it a versatile ingredient in both flavors and fragrances. It synergizes well with other citrus and floral notes, enhancing overall freshness. Formulators should be cautious of its potency to avoid overpowering other components in a blend. It is often under-used in applications where a strong lemon note is desired but can be over-used if not carefully balanced.

Citation hooks: FlavScents; industry practice

9. Confidence & Data Quality Notes

The data on Lemon Oil Terpeneless is well-established, with industry-typical practices documented in various sources. However, specific numeric values for thresholds and use levels may vary, and formulators should verify these based on their specific applications. Regulatory information is generally harmonized, but country-specific variations should be considered.

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 2026-09-02 20:23:36 GMT (p2)