Study of honey authenticity: C3/C4 adulteration, oligosaccharides, 1H NMR profiling and sugar levels

Honey authenticity testing is a comprehensive analytical process designed to verify the origin, purity, and conformity of commercially available honeys. It aims to detect the most common adulteration practices, such as the addition of exogenous syrups (C3 or C4), oligosaccharides, or sugars not naturally present in honey.

This analysis is essential for producers, packers, distributors and stakeholders in the beekeeping sector who wish to guarantee the traceability of their products, meet regulatory requirements and secure their certification or commercial development processes.

The challenges of honey authenticity

Honey is a naturally complex product, the composition of which depends on its floral and geographical origin, as well as beekeeping practices. Due to its economic value, it is particularly vulnerable to fraud and adulteration, notably through the addition of sugar syrups derived from C3 plants (beetroot, wheat) or C4 plants (corn, sugar cane).

European regulations require that honey be a natural product, without the addition of any foreign substances. Any adulteration can lead to regulatory non-compliance, market withdrawal, loss of certification, or damage to brand image.

General principle of the authenticity study

The study of the authenticity of honey relies on a multi-parametric , combining several complementary analytical techniques in order to obtain a comprehensive and reliable view of the composition of the product.

This approach makes it possible to detect inconsistencies in the honey profile, to identify signatures of adulteration and to compare the results to databases of authentic honeys.

Analytical techniques used

C3/C4 adulteration analysis relies on isotopic methods to differentiate between sugars naturally present in honey and those from exogenous plant sources. This approach is particularly effective for detecting the addition of glucose or fructose syrups.

Chromatography is used to analyze the profile of sugars and oligosaccharides. It allows for the quantification of major sugars (glucose, fructose, sucrose) and the detection of the presence of atypical oligosaccharides, often indicators of adulteration.

PMN-1H) profiling is a reference technique for verifying the authenticity of honey. It provides a comprehensive profile of the product, including sugars, organic acids, minor compounds, and specific markers. The NMR profile is compared to databases of authentic honeys to identify any anomalies.

Analysis of sugar levels complements the approach by allowing precise quantification of the main carbohydrate constituents of honey.

Parameters studied

This study makes it possible to determine, in particular:

• the presence or absence of exogenous sugars from C3 or C4 plants
• the oligosaccharide profile and content
• the global ¹H NMR profile of honey
• the content of major and minor sugars

All of these parameters make it possible to assess the overall authenticity of the honey and its compliance with regulatory and normative criteria.

Matrices involved

The analysis applies to raw honeys, packaged honeys, monofloral or polyfloral honeys, as well as honey-based products intended for human consumption.

Samples are prepared according to adapted protocols in order to preserve the integrity of the compounds analyzed and to guarantee the reliability of the results.

Industrial applications

The study of honey authenticity is used in many industrial contexts. It is involved in quality control upon receipt, supplier validation, honey certification (labels, geographical indications, quality assurance processes) and securing supply chains.

It is also mobilized in cases of suspected fraud, commercial disputes or official controls, as well as in efforts to promote authentic honeys in demanding markets.

Regulatory issues and compliance

European regulations governing honey impose strict criteria for composition and authenticity. Any presence of added sugars or exogenous compounds constitutes non-compliance.

A comprehensive analytical study helps to document regulatory files, meet the requirements of control authorities and secure the marketing of products.

YesWeLab Expertise

YesWeLab relies on a rigorously selected network of partner laboratories specializing in the analysis of honey and sugar products. The laboratories are mostly certified and/or accredited according to recognized standards such as ISO 17025 and COFRAC.

Each request is analyzed by the YesWeLab scientific team in order to define the most suitable analytical strategy, to interpret the results in their context and to provide reliable and responsive support to the actors in the sector.

Thanks to its digital platform, YesWeLab enables centralized analysis management, optimized sample tracking, and fast, secure access to results. Since 2020, numerous professionals in the food and beekeeping sectors have trusted YesWeLab for their authenticity analyses.

Other analyses from the YesWeLab catalogue

The study of the authenticity of the honey can be complemented by other analyses from the YesWeLab catalogue in order to obtain a complete characterization of the product.

Measuring sugars and carbohydrate profile allows for a deeper understanding of the nutritional composition of honey.

Contaminant analyses ( pesticide residues, antibiotics) complement the assessment of the food safety of honeys.

For any quote request or to discuss your specific needs in honey authenticity testing, contact the YesWeLab team now.