Upon review of the date from the methylglyoxal concentrations by the derivatisation method (table 2), it was discovered that there was failure to apply a multiplication of 1.87. This is to take into account dilution caused by addition of derivatisation agent to the honey solution, as well as adjusting for the density of the methoxyl solution. As a result, for accurate results all of the data in the column of Table 2 should be multiplied by 1.87. By doing so, the difference between the direct HPLC data and the data from the derivisation method increases, especially for honey with higher UMF. This may relate in part to the deviation from linearity of the standard curve for the derivatisation method above 800 mg/k.

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