At Minerva we have developed unique expertise in the field of honey antimicrobial activity testing and the analysis of New Zealand Manuka honey.

Anti-microbial Activity Testing
Most honey has natural anti-microbial properties due predominantly to the natural presence of peroxide in the honey. Certain speciality honeys may have additional anti-microbial activity from other natural constituents of that particular honey type. The most widely publicised of such honeys is New Zealand Manuka that is often marketed with a Unique Manuka Factor (UMF) indicating the ‘activity rating’ of the product. This rating is determined by microbiological bioassay and is expressed in terms of equivalent inhibition by phenol standard solutions.

We are able to offer bioassays capable of determining both Total Activity and Non-peroxide Activity in honey. Activity range 8 to 20+ % w/v phenol is normally offered, although we can offer additional assays capable of determining lower activities ranging from 4 to 8 % w/v phenol.

For prices and further information on any of this testing please contact us.

Methyl Glyoxal (MGO) Analysis
It has been widely publicised that methyl glyoxal (MGO) is the major constituent of Manuka Honey responsible for its non-peroxide anti-bacterial properties. We are able to offer quantitative HPLC analysis of MGO in honey. This determination can be used to confirm activity assay findings, or as a more rapid method for the determination of non-peroxide activity.

Anti-microbial Activity Testing

• Microbiological Total Activity Assay (% Phenol)
• Microbiological Non-Peroxide Activity Assay (% Phenol)
• Methyl Glyoxal (MGO) by HPLC

Manuka Honey Authentication
We can offer a range of tests suitable for the verification of both active and non-active Manuka honey identity. Manuka has a very characteristic viscosity profile that sets it aside from most other honey types. Coupled with pollen analysis (by microscopy) and activity testing / MGO analysis (see above) for potentially active honeys, this package offers a comprehensive assessment of Manuka-like characteristics.

Manuka Honey Authentication Testing

• Viscosity Profile
• Pollen analysis by microscopy - Manuka identification