Overview
SIST EN 17958:2025 defines a standard analytical method for authenticating honey through the determination of the δ13C value (stable carbon isotope ratio) of sugars present in honey. The method utilizes liquid chromatography-isotope ratio mass spectrometry (LC-IRMS) to separate and analyze mono- (fructose and glucose), di-, and trisaccharides, helping to establish the origin and verify the authenticity of honey. This standardized approach enables laboratories to detect potential adulteration with foreign sugars, such as those derived from syrups made from C4 plants (e.g., maize, sugar cane) or C3 plants (e.g., sugar beet, wheat, rice).
Key Topics
- Food authenticity verification: Focuses on the authenticity assessment of honey using carbon isotope ratio measurements.
- LC-IRMS Technology: Details the application of liquid chromatography with isotope ratio mass spectrometry for robust sugar analysis.
- Isotopic ratio determination: Measures the 13C/12C ratio of individual honey sugars, comparing them with reference values for pure honey.
- Detection of adulterants: Enables the identification of honey adulteration by detecting the isotopic signature of added sugars from different plant origins.
- Precision and repeatability: Includes data from interlaboratory comparisons, ensuring the method delivers reliable and reproducible results.
- Standard method calibration: Recommends the use of certified reference materials for calibration, facilitating comparability and traceability of results across different laboratories.
Applications
The standard offers substantial practical value to stakeholders in the honey industry and related food authenticity fields:
- Honey industry testing: Beekeepers, producers, and exporters can validate the genuineness of their honey products before entering international markets.
- Regulatory compliance: Helps laboratories fulfill requirements under EU regulations and other international frameworks aimed at preventing food fraud.
- Customs and quality control: Supports official control laboratories in detecting and deterring economically motivated adulteration in imported/exported honey.
- Consumer protection: Assures consumers about the natural composition and origin of honey products, contributing to market transparency.
- Food research: Assists scientists in studying the carbon isotope distribution in sugars and monitoring changes in quality or botanical origin of honey samples.
- Method standardization: Enables comparable, high-quality analysis across diverse laboratories, enhancing trust in testing results.
Related Standards
For extended or complementary analytical workflows in food authenticity, consider these related standards:
- prEN 18054:2024 - Food authenticity - Determination of C and/or N isotope ratios in food by Elemental Analyser - Isotope Ratio Mass Spectrometry (EA-IRMS): Expands isotope ratio determination to a wider range of food matrices.
- AOAC Official Method 998.12 - C-4 Plant Sugars in Honey: Provides procedures for detecting C4 plant adulteration using stable carbon isotope ratio methods.
- EN ISO 1042:1999 - Laboratory glassware - One-mark volumetric flasks: For preparation of solutions with defined volumes during isotope analysis.
- EN ISO 3696:1995 - Water for analytical laboratory use - Specification and test methods: Ensures water quality meets the requirements for reliable LC-IRMS results.
- Council Directive 2001/110/EC - Relating to honey: Sets legal composition and authenticity criteria for honey in the EU.
SIST EN 17958:2025 thus plays a crucial role in safeguarding honey authenticity, combating food fraud, and promoting confidence in honey supply chains through precise and standardized isotope ratio analysis.