Grading

Methylglyoxal Rating

Peter Molan, formerly Professor in Biological Science and Director of the Honey Research Unit at the University of Waikato, is seen by the Manuka industry as the “Godfather" of Manuka. 

In Peter Molan's most recently published report “The True Relationship of NPA and MG Levels”, Peter concludes:

It is my opinion, formed from consideration of all the points made here, that it would be best by far for the rating of activity in Manuka honey to be done by the whole industry as originally stated by the Ministry for Primary Industries (MPI) in their guidelines, which was that only the content of Methylglyoxal be shown. This would then only require education of consumers to have them realise that the antibacterial potency is directly proportional to the level of Methylglyoxal."

The full report publish in April 2015 can be reached at : Peter Molan Report

UMF Rating

UMF is a trademark, which is owned by Unique Manuka Factor Honey Association. Members join the association for a fee, which then allows a UMF trademark to be printed on their Manuka honey jar. Strict guidelines are set for all members to follow.

Recently the Unique Manuka Factor Honey Association has published a comparison chart on their website, which formally converts the Methylglyoxal level found in Manuka honey to their bespoke UMF Grade trademark.

NPA Rating

NPA stands for Non Peroxide Activity and was first invented by Peter Molan using the old Phenol antimicrobial test. For further information we suggest you reference The True Relationship of NPA and MG Levels”. NPA follows the same grading system as UMF.

Total Activity

Total activity refers to the combination of Hydrogen Peroxide and Non Peroxide. The Hydrogen Peroxide compound is found in most honey around the world, including Scottish Heather honey. The compound is not stable in honey and can be diluted quickly by lite, heat and dilution.