Changes in DHA, MGO and Leptosperin in Honey Stored for four years

Changes in DHA, MGO and Leptosperin in Honey Stored for four years

Background:

In 2011 Oritain collected representative floral type honeys from throughout New Zealand on behalf of the NZ honey industry. At the time, these samples were tested for their DHA, MGO and HMF concentrations, and pollen content. One subset of the samples were stored frozen while another subset was stored in a temperature controlled environment at 21 oC. In September 2015, after some 4 years of storage, the two subsample sets were reanalyzed for DHA, MGO, and HMF, and were also tested for Leptosperin and subjected to chemical profiling by HRMS. The DHA, MGO and Leptosperin data was processed by the UMFHA Manuka Honey Classifier (MHC) to determine if the honey was wholly or mainly Manuka, Manuka Blend, or Not Manuka honey. The results from the MHC were compared with the floral-type classification based on pollen measurements.

 

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