Validation of the naturalness of essential oils

The validation of the naturalness of essential oils confirms that an oil is 100% natural, pure, and unadulterated , meaning it has not undergone any chemical modification or the addition of synthetic compounds .
This analysis is crucial to guarantee the traceability, quality, and regulatory compliance of essential oils used in the aromatherapy, cosmetic, nutraceutical, and phytotherapy .

It relies on high-precision chromatographic methods, including gas chromatography with flame ionization detection (GC-FID) and chromatography coupled with mass spectrometry (GC-MS) . These techniques allow for obtaining a complete chemical profile of the oil , which is then compared to bibliographic references and natural standards .

Principle and method of analysis

The analysis is based on the separation and identification of the volatile molecules characteristic of each essential oil (monoterpenes, sesquiterpenes, esters, aldehydes, phenols, etc.).

1. GC-FID (Gas Chromatography – Flame Ionization Detector) : allows for the precise quantification of volatile constituents, ensuring optimal reproducibility.
2. GC-MS (Gas Chromatography – Mass Spectrometry) : identifies each compound through its mass spectrum, facilitating the detection of possible adulterations (additions of synthetic molecules or foreign oils).
3. Comparison of the chromatographic profile : the results are compared with reference databases (NIST, Adams, ISO 11024 libraries, etc.) to determine the conformity of the profile.

This approach makes it possible to detect subtle alterations such as:

• the addition of solvents or synthetic compounds,
• artificial rectification or reconstitution,
• the blend of oils from different origins,
• or even the modification of the natural ratio between isomers.

Industrial applications

Naturalness validation is essential for many stakeholders:

• Producers and distillers of essential oils : quality control at the end of distillation and traceability of batches.
• Manufacturers of food supplements and nutraceutical products : verification of compliance with European regulations and organic specifications.
• Cosmetic laboratories and perfumers : authentication of natural oils used in formulations.
• Distributors and importers : guarantee of natural origin and fraud detection.

This analysis also helps to secure supply chains and avoid non-conformities related to the ISO 9235 standard , which defines the criteria for naturalness of aromatic products.

To delve deeper, YesWeLab recommends supplementing this study with:

• the analysis of the purity and composition of essential oils ,
• verification of botanical and geographical origin by DNA ,
• and the analysis of contaminants (pesticides, residual solvents) .

Analytical interest and complementarity

The validation of naturalness is part of a comprehensive approach to verifying the authenticity and conformity of natural extracts.
It can be combined with other tests for a complete characterization of the product:

• Determination of the chemotype for the identification of the major composition,
• Dosage of aromatic compounds,
• Isotopic analysis (IRMS) for verification of natural origin,
• Control of stability to light and heat to assess the preservation of oils.

These additional analyses ensure complete traceability of the product , from raw material to marketing.

YesWeLab Services

YesWeLab works with a network of ISO 17025 and/or COFRAC accredited laboratories specializing in chromatographic, isotopic, and DNA analyses for verifying the authenticity of essential oils.
Our experts will guide you in selecting the appropriate methods and comparing them to reference profiles suited to your botanical and geographical origin.

Thanks to the YesWeLab digital platform , you can easily order, track, and manage all your analyses.
Since 2020, YesWeLab has been supporting essential oil manufacturers, cosmetic laboratories, and nutraceutical companies in securing and maximizing the value of their natural products .

For any specific request or quote, contact our scientific team today.